{"id":91,"date":"2014-12-03T11:22:35","date_gmt":"2014-12-03T10:22:35","guid":{"rendered":"http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/?page_id=91"},"modified":"2017-04-03T15:42:36","modified_gmt":"2017-04-03T13:42:36","slug":"publications","status":"publish","type":"page","link":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/publications\/","title":{"rendered":"Publications"},"content":{"rendered":"
2016<\/div>\n
\n
\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A.<\/div>\n
Out-of-vehicle time-of-arrival based localization in ultra-wide band<\/div>\n
More information<\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Out-of-vehicle time-of-arrival based localization in ultra-wide band. International Journal of Distributed Sensor Networks. 2016, vol. 12, no. 8, p. 1-11. ISSN: 1550-1329.
\nAbstract<\/b>
\nThe article presents out-of-vehicle channel measurement results in ultra-wide band spanning 3\u201311 GHz bandwidth using a vector network analyzer for localization applications. Experiments for different distances and different angles around the parked car are carried out. From the power delay profiles, the distance between the antennas is calculated exploiting the linear dependence of distance with line-of-sight delay peak. The coordinates of a transmitting antenna are found with the help of two receiving antennas following a two-dimensional time-of-arrival-based localization technique. A comparison of the calculated coordinates with the original exhibits an error of less than 6% which establishes the suitability of the proposed approach in locating other neighboring cars.
\nbibTeX Reference<\/b>
\n@ARTICLE{23_KUKOLEV2016_IJDSENS,
\n author = {KUKOLEV, Pavel and CHANDRA, Aniruddha and MIKULASEK, Tomas and PROKES,
\n\tAles},
\n title = {Out-of-vehicle time-of-arrival based localization in ultra-wide band},
\n journal = {International Journal of Distributed Sensor Networks},
\n year = {2016},
\n volume = {12},
\n pages = {1–11},
\n number = {8},
\n issn = {1550-1329}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
Frequency-domain in-vehicle UWB channel modelling<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., ZEMEN, T., MECKLENBR\u00c4UKER, C. Frequency-domain in-vehicle UWB channel modelling. IEEE Transactions on Vehicular Technology.<\/div>\n

Abstract<\/b>
\nThe aim of this article is to present a simple but robust model characterizing the frequency dependent transfer function of an in-vehicle ultra-wide-band channel. A large number of transfer functions spanning the ultra-wide-band (3 GHz to 11 GHz) are recorded inside the passenger compartment of a four seated sedan car. It is found that the complex transfer function can be decomposed into two terms, the first one being a real valued long term trend that characterizes frequency dependency with a power law, and the second term forms a complex correlative discrete series which may be represented via an autoregressive model. An exhaustive simulation framework is laid out based on empirical equations characterizing trend parameters and autoregressive process coefficients. The simulation of the transfer function is straightforward as it involves only a handful of variables, yet it is in good agreement with the actual measured data. The proposed model is further validated by comparing different channel parameters, such as coherence bandwidth, power delay profile, and root mean square delay spread, obtained from the raw and the synthetic data sets.
\nbibTeX Reference<\/b>
\n@ARTICLE{24_CHANDRA2016_IEEE_TVT,
\n author = {CHANDRA, Aniruddha and PROKES, Ales and MIKULASEK, Tomas and BLUMENSTEIN,
\n\tJiri and KUKOLEV, Pavel and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {Frequency-domain in-vehicle UWB channel modelling},
\n journal = {IEEE Transactions on Vehicular Technology},
\n year = {2016},
\n volume = {65},
\n pages = {3929–3940},
\n number = {6},
\n issn = {0018-9545}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., MARSALEK, R., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
In-Vehicle Channel Measurement, Characterization and Spatial Consistency Comparison of 3-11 GHz and 55-65 GHz Frequency Bands<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., MARSALEK, R., ZEMEN, T., MECKLENBR\u00c4UKER, C. In-Vehicle Channel Measurement, Characterization and Spatial Consistency Comparison of 3-11 GHz and 55-65 GHz Frequency Bands. IEEE Transactions on Vehicular Technology.<\/div>\n

Abstract<\/b>
\nThe paper provides real-word wireless measurement data of the intra-vehicular channel for both the 3-11 GHz and the 55-65 GHz frequency band under similar conditions. By spatially averaging channel impulse response (CIR) realizations within a10\u00d710 grid, we obtain the power-delay profile (PDP). The data measured at 3-11 GHz and 55-65 GHz exhibit significant differences in terms of root mean square (RMS) delay spread, number of resolvable clusters and variance of the maximal excess delay. Moreover, we evaluate the spatial stationarity via the Pearson correlation coefficient and via the PDP collinearity depending on the distance in the grid. The measured and calculated results indicate that a strong reverberation inside the vehicle produces similar PDPs within the range of approximately 10 wavelengths. We also provide a linear piecewise model of the PDP in logarithmic scale and a generalized extreme value (GEV) model of small-scale signal fading. Our channel model is validated utilizing the Kolmogorov-Smirnov (K-S) test.
\nbibTeX Reference<\/b>
\n@ARTICLE{25_BLUMENSTEIN2016_IEEE_TVT,
\n author = {BLUMENSTEIN, Jiri and PROKES, Ales and CHANDRA, Aniruddha and MIKULASEK,
\n\tTomas and MARSALEK, Roman and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {In-Vehicle Channel Measurement, Characterization and Spatial Consistency
\n\tComparison of 3-11 GHz and 55- 65 GHz Frequency Bands},
\n journal = {IEEE Transactions on Vehicular Technology},
\n year = {2016},
\n volume = {PP},
\n pages = {1–13},
\n number = {99},
\n doi = {10.1109\/TVT.2016.2600101}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nAccepted<\/b><\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., MECKLENBRAUKER, C.<\/div>\n
UWB measurements for spatial variability and ranging: Parked car in underground garage<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., MECKLENBRAUKER, C. UWB measurements for spatial variability and ranging: Parked car in underground garage. IEEE Antennas and Wireless Propagation Letters. 2016, p. 1-4<\/div>\n

Abstract<\/b>
\nThe randomness in UWB channel for small positional variations around a car, parked in an underground garage, is reported. Keeping the receiver fixed at the conventional rooftop antenna location, the transmitter location is changed to study the variations against distance, angle, and height. The path loss is found to be monotonically increasing with distance but varies randomly with angle and height and thereby renders signal strength based ranging inaccurate for such scenarios. On the other hand, the first peak can reliably provide distance estimate irrespective of transmitter angle or height. The number of clusters in the delay profile reduces with distance but the shape of the profile remains fairly consistent across angle. The Saleh-Valenzuela parameter values also vary with distance and height but their average values are close to IEEE 802.15.3 standard.
\nbibTeX Reference<\/b>
\n@ARTICLE{26_CHANDRA2016_IEEE_AWPL,
\n author = {CHANDRA, Aniruddha and KUKOLEV, Pavel and MIKULASEK, Tomas and PROKES,
\n\tAles and MECKLENBRAUKER, Christoph},
\n title = {UWB measurements for spatial variability and ranging: Parked car
\n\tin underground garage},
\n journal = {IEEE Antennas and Wireless Propagation Letters},
\n year = {2016},
\n volume = {PP},
\n doi = {10.1109\/LAWP.2016.2628390}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nRevised<\/b><\/div>\n
\n
CHANDRA, A., PROKE\u0160, A.<\/div>\n
Millimeter-wave channel characteristics inside bus: Field experiment results<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., PROKE\u0160, A. Millimeter-wave channel characteristics inside bus: Field experiment results. Mobile Information Systems. 2016, MOB INF SYST<\/div>\n

Abstract<\/b>
\nFirst results for frequency-domain channel measurements in a bus in the 60 GHz millimeter wave band are reported. The simple setup used consists of analog signal generator and scalar signal analyzer, instead of vector network analyzers which are costly and suffer from cable length limitation. Path loss values are computed directly from the frequency-domain data and log-distance model parameters are extracted. Next, assuming minimum phase channel, delay profiles are constructed from amplitude-only data following a Hilbert transform. Using the path loss and delay parameter values, the effect of seat position, passenger occupancy, reflections from glass window etc. are discussed in detail.
\nbibTeX Reference<\/b>
\n@ARTICLE{27_CHANDRA2016_MIS,
\n author = {CHANDRA, Aniruddha and PROKES, Ales},
\n title = {Millimeter-wave channel characteristics inside bus: Field experiment
\n\tresults},
\n journal = {Mobile Information Systems},
\n year = {2016},
\n note = {Resubmitted}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
MIKUL\u00c1\u0160EK, T., BLUMENSTEIN, J., PROKE\u0160, A.<\/div>\n
Antennas utilized for intra-vehicle 3\u201311 GHz and 55\u2013 65 GHz channel measurement<\/div>\n
More information<\/div>\n
\n
MIKUL\u00c1\u0160EK, T., BLUMENSTEIN, J., PROKE\u0160, A. Antennas utilized for intra-vehicle 3\u201311 GHz and 55\u201365 GHz channel measurement. In Progress in Electromagnetics Research Symposium, (PIERS). Shanghai, China: 2016, p. 4258-4262. ISBN: 978-1-5090-6093-1<\/div>\n

Abstract<\/b>
\nIn this work, antennas utilized for an intra-vehicle 3\u201311GHz and 55\u201365GHz channel measurement are described. A measurement antenna should not only provide a wide-band impedance bandwidth but also have a stable radiation pattern and a high fidelity factor. For the lower frequency band, a metal conical monopole antenna is proposed for its frequency stable H-plane omnidirectional radiation pattern. An open waveguide antenna (OWGA) and a substrate integrated waveguide slot antenna array are discussed for 55\u201365GHz channel measurement. In the case of the OWGA, the effect of a flange on antenna properties is investigated. The suitability of these antennas for time domain measurement is discussed using fidelity factor. Both simulated and measured properties of the antennas are presented. The proposed antennas are also suitable for out-of-vehicle channel measurement. Most information about the channel measurement are freely available online: http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{28_MIKULASEK2016_PIERS,
\n author = {MIKULASEK, Tomas and BLUMENSTEIN, Jiri and PROKES, Ales},
\n title = {Antennas utilized for intra-vehicle 3\u201311 GHz and 55\u2013 65 GHz channel
\n\tmeasurement},
\n booktitle = {Progress in Electromagnetics Research Symposium, (PIERS)},
\n year = {2016},
\n pages = {4258–4262},
\n address = {Shanhai, China},
\n isbn = {978-1-5090-6093-1}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
KOTOL, M., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., RAIDA, Z.<\/div>\n
Estimation the transmission between antennas using artificial neural networks in the UWB band<\/div>\n
More information<\/div>\n
\n
KOTOL, M., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., RAIDA, Z. Estimation the transmission between antennas using artificial neural networks in the UWB band. In 2016 Progress in Electromagnetic Research Symposium (PIERS). 2016, p. 1465-1469. ISBN: 978-1-5090-6093-1<\/div>\n

Abstract<\/b>
\nThe characteristics of the transmission channel inside the car are very important for future intra-car communication technologies. These technologies will create the small wireless networks for the distribution of data services such as internet, video, audio, etc. transmission. For these services, it is preferable to use the UWB frequency band from 3GHz to 11GHz because of the hardware support availability. An estimation of transmission channel characteristic is time-consuming and computationally demanding process. Presented paper deals with the channel transfer function estimation for different receiving antenna locations determined by the two dimensional grid. Proposed artificial neural network used for the analysis of the transmission channel is based on the feed forward and radial basis function structure. Neural networks have been optimized using measured channel transfer function to achieve better effectiveness, speed and accuracy.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{29_KOTOL2016_PIERS,
\n author = {KOTOL, Martin and PROKES, Ales and MIKULASEK, Tomas and RAIDA, Zbynek},
\n title = {Estimation the transmission between antennas using artificial neural
\n\tnetworks in the UWB band},
\n booktitle = {Progress in Electromagnetic Research Symposium (PIERS)},
\n year = {2016},
\n pages = {1465–1469},
\n address = {Shanghai, China},
\n isbn = {978-1-5090-6093-1}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., VYCHODIL, J., POSP\u00cd\u0160IL, M., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A.<\/div>\n
Effects of Vehicle Vibrations on mm-Wave Channel: Doppler Spread and Correlative Channel Sounding<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., VYCHODIL, J., POSP\u00cd\u0160IL, M., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Effects of Vehicle Vibrations on mm-Wave Channel: Doppler Spread and Correlative Channel Sounding. In 2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Institute of Electrical and Electronics Engineers Inc., Valencia, Spain, 2016, p. 398-402. ISBN:978-1-5090-3253-2<\/div>\n

Abstract<\/b>
\nThis paper deals with evaluating the effect of vehicle vibrations on the mm-wave intra-vehicular channel. As some of the vehicles\u2019 vibration amplitude may reach the order of millimeters, i.e., the amplitude is comparable with the mm-wave wavelength (~5 mm), it can produce severe Doppler spreads. This paper evaluates Doppler spreads utilizing a mm-wave time-domain correlative channel sounder built into a vehicle which has been driven at different speeds on a variety of roads with a broad spectrum of surface quality.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{30_BLUMENSTEIN2016_PIMRC,
\n author = {BLUMENSTEIN, Jiri and VYCHODIL, Josef and POSPISIL, Martin and MIKULASEK,
\n\tTomas and PROKES, Ales},
\n title = {Effects of Vehicle Vibrations on mm-Wave Channel: Doppler Spread
\n\tand Correlative Channel Sounding},
\n booktitle = {IEEE 27th Annual International Symposium on Personal, Indoor, and
\n\tMobile Radio Communications (PIMRC)},
\n year = {2016},
\n pages = {398–402},
\n address = {Valencia, Spain},
\n isbn = {978-1-5090-3253- 2}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
PROKE\u0160, A., VYCHODIL, J., POSP\u00cd\u0160IL, M., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., CHANDRA, A.<\/div>\n
Time-Domain Nonstationary Intra- Car Channel Measurement in 60 GHz Band<\/div>\n
More information<\/div>\n
\n
PROKE\u0160, A., VYCHODIL, J., POSP\u00cd\u0160IL, M., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., CHANDRA, A. Time-Domain Nonstationary Intra- Car Channel Measurement in 60 GHz Band. In Proc. of International Conference on Advanced Technologies for Communications (ATC 2016). Hanoi, Vietnam: University of Engineering and Technology, Vietnam National University, Hanoi (VNU-UET), 2016, p. 1-6. ISBN: 1-4244-0800-8<\/div>\n

Abstract<\/b>
\nThe paper deals with a time varying intra-vehicle channel measurement in the 60 GHz millimeter wave (MMW) band using a unique time-domain channel sounder built from off-the-shelf components and standard measurement devices. The aim of the presented work is to describe the sounder architecture, the primary data processing technique, and preliminary results of measurements aimed at the effect of vehicle vibrations and twisting, and passengers moving in a car cabin. As the amplitude of the car cabin vibration and twisting had been supposed to be comparable with the MMW wavelength, some effect on the channel impulse response (CIR) and consequently on the delay-Doppler spread (DDS) was expected. Preliminary results confirm the correctness of this assumption and allow us to assess the effect of different above-mentioned phenomena. We tested the effect of driving the car on different types of road (bumpy road, flat road, highway, etc.). For comparison purposes we use DDS and statistics of CIR amplitudes calculated using the correlative technique applied to the pseudorandom binary sequence.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{31_PROKES2016_ATC,
\n author = {PROKES, Ales and VYCHODIL, Josef and POSPISIL, Martin and BLUMENSTEIN,
\n\tJiri and MIKULASEK, Tomas and CHANDRA, Aniruddha},
\n title = {Time-Domain Nonstationary Intra- Car Channel Measurement in 60 GHz
\n\tBand},
\n booktitle = {Proc. of International Conference on Advanced Technologies for Communications
\n\t(ATC 2016)},
\n year = {2016},
\n pages = {1–6},
\n address = {Hanoi, Vietnam},
\n isbn = {1-4244-0800- 8}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., MIKUL\u00c1\u0160EK, T., BLUMENSTEIN, J., PROKE\u0160, A.<\/div>\n
60 GHz mmW Channel Measurements inside a Bus<\/div>\n
More information<\/div>\n
\n
CHANDRA, A.; MIKUL\u00c1\u0160EK, T.; BLUMENSTEIN, J.; PROKE\u0160, A. 60 GHz mmW Channel Measurements inside a Bus. In Proceedings of the 8th IFIP International Conference on New Technologies, Mobility and Security (NTMS). 2016, p. 1-5. ISBN: 9781479987856<\/div>\n

Abstract<\/b>
\nFirst results for frequency-domain channel measurements in a bus in the 60 GHz millimeter wave band are reported. The simple setup used consists of analog signal generator and scalar signal analyzer, instead of vector network analyzers which are costly and suffer from cable length limitation. Path loss values are computed directly from the frequency-domain data and log-distance model parameters are extracted. Next, assuming minimum phase channel, delay profiles are constructed from amplitude-only data following a Hilbert transform. Using the path loss and delay parameter values, the effect of seat position, passenger occupancy, reflections from glass window etc. are discussed in detail.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{32_CHANDRA2016_NTMS,
\n author = {CHANDRA, Aniruddha and MIKULASEK, Tomas and BLUMENSTEIN, Jiri and
\n\tPROKES, Ales},
\n title = {60 GHz mmW Channel Measurements inside a Bus},
\n booktitle = {Proceedings of the 8th IFIP International Conference on New Technologies,
\n\tMobility and Security (NTMS)},
\n year = {2016},
\n pages = {1–5},
\n isbn = {9781479987856}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nPoster<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., PROKE\u0160, A.<\/div>\n
Intra-vehicle UWB channel modeling in frequency-domain<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., PROKE\u0160, A. Intra-vehicle UWB channel modeling in frequency-domain. In BMW Summer School, Bavaria, Germany, 2016<\/div>\n

bibTeX Reference<\/b>
\n@CONFERENCE{33_CHANDRA2016_BMW_SUMMER,
\n author = {CHANDRA, Aniruddha and PROKES, Ales},
\n title = {Intra-vehicle UWB channel modeling in frequency-domain},
\n booktitle = {BMW Summer School},
\n year = {2016},
\n address = {Germany},
\n note = {Poster}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nPh.D. thesis<\/b>
\nStatus:<\/em>
\nDefended<\/b><\/div>\n
\n
KUKOLEV, P.<\/div>\n
Inter-Vehicle Communication Modeling and Around-Vehicle Localization<\/div>\n
More information<\/div>\n
\n
KUKOLEV, P. Inter-Vehicle Communication Modeling and Around-Vehicle Localization. Ph.D. thesis, FEEC. BUT Brno, p. 1-77.<\/div>\n

Abstract<\/b>
\nThe dissertation is focused on channel measurements and modeling for vehicle-to-X communication and on localization. In order to realize an integrated intelligent transportation system (ITS), it is important to estimate channel features for intra-vehicle and out-of-vehicle scenarios. For this propose the following activities are carried out: simulation of the 802.11p PHY; comparison with 802.11a; channel measurements for different scenarios based on the 802.11p and ultra-wideband (UWB); creating channel models for 802.11p and UWB; UWB measurements to assess performance of localization.
\n– The vehicle-to-X communication is supposed on the IEEE 802.11p standard. The dissertation presents the differences between IEEE 802.11a and IEEE 802.11p physical layer standards through the simulation results of the transmission over a HIPERPLAN\/2 channel. Further, the simulation of the 802.11p signal transmission over ITU-R M.1225 channel, which includes pedestrian and vehicle models with different relative delays and average power, is presented. The influence of the channel on the signal is analyzed using MATLAB simulation in terms of bit error rate (BER).
\n– The dissertation reports vehicular channel measurements in the frequency band of 5.8 GHz for IEEE 802.11p standard and for UWB (3-11 GHz). Experiments for both intra-vehicle and out-of-vehicle environments are carried out. It was observed that the large-scale variations (LSVs) of the power delay profiles (PDPs) can be best approximated through a two-term exponential decay model for the 802.11p protocol, in contrast to the Saleh-Valenzuela (S-V) model which is suitable for UWB systems.
\n– For each measurement, the LSV trend was used to construct the respective channel impulse response (CIR). Next, the CIR is used in 802.11p simulation to evaluate the BER performance, following a Rician model. The results of the BER simulation shows the suitability of the protocol for in-car as well as out-of-car wireless applications. The simulation for out-of-car parameters indicate that the error performances do not vary much and it is possible to determine an average BER curve for the whole set of data.
\n– The randomness in UWB channel for small positional variations around a car, parked in an underground garage, is reported. The path loss (PL) is found to be monotonically increasing with distance but varies randomly with angle and height and thereby renders signal strength based ranging inaccurate for such scenarios. On the other hand, arrival time of the first ray can be used for reliable estimation of distance, independent on transmitter angle or height. The number of clusters in the PDP is reduced with distance but the nature of the profile remains fairly consistent with angle. The S-V model parameters also vary with distance and height but their average values are close to the IEEE 802.15.3 recommended channel model.
\n– For localization applications the distance between the antennas is calculated exploiting the linear dependence of distance on delay from PDP. The coordinates of a transmitting antenna are found with the help of two receiving antennas following a two-dimensional (2-D) time-of-arrival (TOA) based localization technique. A comparison of the calculated coordinates with the original ones exhibits an error of less than 6% which supports the suitability of the proposed approach for localization of the cars.
\nbibTeX Reference<\/b>
\n@PHDTHESIS{34_KUKOLEV2016_PHD,
\n author = {KUKOLEV, Pavel},
\n title = {Inter-Vehicle Communication Modeling and Around-Vehicle Localization},
\n school = {Brno University of Technology},
\n year = {2016},
\n type = {Doctoral Thesis}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
PROKE\u0160, A., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T.<\/div>\n
M\u011b\u0159en\u00ed \u0161\u00ed\u0159en\u00ed elektromagnetick\u00fdch vln v automobilech pro \u00fa\u010dely komunikace a lokalizace<\/div>\n
More information<\/div>\n
\n
PROKE\u0160, A.; BLUMENSTEIN, J.; MIKUL\u00c1\u0160EK, T. M\u011b\u0159en\u00ed \u0161\u00ed\u0159en\u00ed elektromagnetick\u00fdch vln v automobilech pro \u00fa\u010dely komunikace a lokalizace. In Sborn\u00edk p\u0159edn\u00e1\u0161ek konference Radiokomunikace. Pardubice: UNIT s.r.o., 2016. p. 189-195. ISBN: 1-4244-0000-1<\/div>\n

Abstract<\/b>
\nKomunikace a lokalizace uvnit\u0159 dopravn\u00edch prost\u0159edk\u016f pat\u0159\u00ed k velmi perspektivn\u00edm obor\u016fm automobilov\u00e9 techniky. Vytvo\u0159en\u00ed lok\u00e1ln\u00ed bezdr\u00e1tov\u00e9 s\u00edt\u011b uvnit\u0159 vozidla m\u016f\u017ee nap\u0159\u00edklad zprost\u0159edkovat sd\u00edlen\u00ed multimedi\u00e1ln\u00edch soubor\u016f v\u0161em cestuj\u00edc\u00edm nebo p\u0159en\u00e1\u0161et data mezi \u010didly, silov\u00fdmi ak\u010dn\u00edmi \u010dleny a \u0159\u00edd\u00edc\u00edmi jednotkami. Tato takzvan\u00e1 \u201esenzorov\u00e1 bezdr\u00e1tov\u00e1 s\u00ed\u0165\u201c by mohla v budoucnu sn\u00ed\u017eit n\u00e1roky na pou\u017eit\u00ed m\u011bd\u011bn\u00fdch vodi\u010d\u016f pou\u017eit\u00fdch v kabel\u00e1\u017ei automobilu, co\u017e by vedlo ke sn\u00ed\u017een\u00ed ceny a hmotnosti vozidla a n\u00e1sledn\u011b tak\u00e9 k \u00faspo\u0159e paliva. Lokalizace objekt\u016f uvnit\u0159 nebo v bl\u00edzk\u00e9m okol\u00ed vozidla pak m\u016f\u017ee optimalizovat vyza\u0159ovac\u00ed diagramy ant\u00e9nn\u00edch syst\u00e9m\u016f s c\u00edlem sn\u00ed\u017eit elektromagnetick\u00e9 emise nebo zabr\u00e1nit neopr\u00e1vn\u011bn\u00e9mu nastartov\u00e1n\u00ed motoru. Aby mohly v\u0161echny v\u00fd\u0161e uveden\u00e9 komunika\u010dn\u00ed a lokaliza\u010dn\u00ed syst\u00e9my spolehliv\u011b fungovat, je nutn\u00e9 zn\u00e1t dokonale prost\u0159ed\u00ed, ve kter\u00e9m se elektromagnetick\u00e9 vlny \u0161\u00ed\u0159\u00ed, vytvo\u0159it jeho model a ten pak pou\u017e\u00edt pro komplexn\u00ed n\u00e1vrh syst\u00e9mu. Vytvo\u0159en\u00ed modelu v\u0161ak komplikuje skute\u010dnost, \u017ee \u0161\u00ed\u0159en\u00ed elektromagnetick\u00fdch vln je ovlivn\u011bno \u0159adou ne\u017e\u00e1douc\u00edch \u010dasov\u011b prom\u011bnn\u00fdch jev\u016f, jako je mnohacestn\u00e9 \u0161\u00ed\u0159en\u00ed, rozptyl nebo st\u00edn\u011bn\u00ed. Popisovan\u00fd v\u00fdzkum je zam\u011b\u0159en na m\u011b\u0159en\u00ed a modelov\u00e1n\u00ed kan\u00e1l\u016f uvnit\u0159 dopravn\u00edch prost\u0159edk\u016f v kmito\u010dtov\u00fdch p\u00e1smech milimetrov\u00fdch vln (56\u201364 GHz) a UWB (3,1\u201310,6 GHz). V r\u00e1mci v\u00fdzkumn\u00fdch aktivit jsou demonstrov\u00e1ny metody m\u011b\u0159en\u00ed jak v kmito\u010dtov\u00e9 tak i v \u010dasov\u00e9 oblasti a pops\u00e1ny metody odhadu p\u0159enosov\u00e9 funkce, impulsn\u00ed odezvy kan\u00e1lu nebo v\u00fdkonov\u00e9ho profilu zpo\u017ed\u011bn\u00ed d\u00edl\u010d\u00edch slo\u017eek, kter\u00e9 jsou z\u00e1kladem pro vytvo\u0159en\u00ed statistick\u00e9ho modelu kan\u00e1lu. D\u016fle\u017eit\u00fdm v\u00fdsledkem v\u00fdzkumu je n\u00e1vrh a realizace unik\u00e1tn\u00edho m\u011b\u0159ic\u00edho syst\u00e9mu, kter\u00fd umo\u017e\u0148uje sledovat a vyhodnotit velmi rychl\u00e9 zm\u011bny vlastnost\u00ed p\u0159enosov\u00e9ho prost\u0159ed\u00ed a zkoumat tak nap\u0159\u00edklad vliv pohybu cestuj\u00edc\u00edch nebo vliv vibrac\u00ed a kroucen\u00ed karoserie zp\u016fsoben\u00fdch b\u011b\u017e\u00edc\u00edm motorem nebo j\u00edzdou vozidla po vozovk\u00e1ch r\u016fzn\u00e9 kvality.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{35_PROKES2016_RADIOKOMUNIKACE,
\n author = {PROKES, Ales and BLUMENSTEIN, Jiri and MIKULASEK, Tomas},
\n title = {M\\v{e}\\v{r}en\\'{i} \\v{s}\\'{i}\\v{r}en\\'{i} elektromagnetick\\'{y}ch
\n\tvln v automobilech pro \\'{u}\\v{c}ely komunikace a lokalizace},
\n booktitle = {Sborn\\'{i}k p\\v{r}edn\\'{a}\\v{s}ek konference Radiokomunikace},
\n year = {2016},
\n pages = {189–195},
\n address = {Pardubice, Czech Republic},
\n publisher = {UNIT s.r.o.},
\n note = {in Czech},
\n isbn = {1-4244-0000-1}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nSubmitted<\/b><\/div>\n
\n
KOTOL, M., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., RAIDA, Z.<\/div>\n
In-car Localization at UWB Frequencies by Neural Networks<\/div>\n
More information<\/div>\n
\n
KOTOL, M., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., RAIDA, Z. In-car Localization at UWB Frequencies by Neural Networks, Radioengineering. 2016, p. 1-5<\/div>\n

Abstract<\/b>
\nIn the paper, the localization of a person in a car by an artificial neural network is discussed. The position of a person is estimated from the channel transfer function between antennas affected by passengers. For the localization, two types the neural architectures are used – the feed-forward (FF) one and the radial basis function (RBF) one. The channel transfer function was measured at UWB frequencies (3 to 11 GHz) for all configurations of passengers. Each configuration was measured five times to consider the movement. Training and verification patterns were composed from measured values. Localization results are discussed in terms of estimation accuracy.
\nbibTeX Reference<\/b>
\n@ARTICLE{36_KOTOL2016_RADIOENG,
\n author = {KOTOL, Martin and PROKES, Ales and MIKULASEK, Tomas and RAIDA, Zbynek},
\n title = {In-car Localization at UWB Frequencies by Neural Networks},
\n journal = {Radioengineering},
\n year = {2016},
\n pages = {1–5},
\n note = {Submitted}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nSubmitted<\/b><\/div>\n
\n
VYCHODIL, J., POSP\u00cd\u0160IL, M., PROKE\u0160, A.<\/div>\n
60 GHz Time Domain Channel Sounder<\/div>\n
More information<\/div>\n
\n
VYCHODIL, J., POSPISIL, M., PROKE\u0160, A. 60 GHz Time Domain Channel Sounder EURASIP Journal on Wireless Communications and Networking. 2016, p. 1-17, ISSN: 1687- 1499.<\/div>\n

Abstract<\/b>
\nThis paper describes a time domain channel sounder based on binary sequences. The channel sounder system consists of several off-the-shelf laboratory instruments connected together and controlled from PC. Frequency band of interest is the unlicensed millimeter wave band (MMW), 57\u201364 GHz. The system\u2019s architecture, its parameters and two types (the Maximum Length Sequences and Golay complementary sequences) of excitation signals are presented and discussed. Main part of this paper is dedicated to description and analysis of the behavior of the system when non-linear components are used. Crucial feature of the proposed system is fast measurement speed enabling measurements of real scenarios with moving objects.
\nbibTeX Reference<\/b>
\n@ARTICLE{37_VYCHODIL2016_EURASIP,
\n author = {VYCHODIL, Josef and POSPISIL, Martin and PROKES, Ales},
\n title = {60 GHz Time Domain Channel Sounder},
\n journal = {EURASIP Journal on Wireless Communications and Networking},
\n year = {2016},
\n pages = {1–17},
\n note = {Submitted},
\n issn = {1687-1499}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nSubmitted<\/b><\/div>\n
\n
LIU P., BLUMENSTEIN, J., PEROVIC, N. J., DI RENZO, M., SPRINGER, A.<\/div>\n
Experimental Assessment of Generalized Spatial Modulation MIMO over 60 GHz Indoor Channels<\/div>\n
More information<\/div>\n
\n
LIU P., BLUMENSTEIN, J., PEROVIC, N. J., DI RENZO, M., SPRINGER, A., Experimental Assessment of Generalized Spatial Modulation MIMO over 60 GHz Indoor Channels. IEEE Transactions on Wireless Communications. 2016, p. 1-27<\/div>\n

Abstract<\/b>
\nIn this paper, we study the capacity and symbol error probability (SEP) of generalized spatial modulation (GSM) multiple-input multiple-output (MIMO) systems using measured channel data that are obtained by channel sounding in an indoor office environment at 60GHz. Spatial modulation (SM) and GSM are emerging low-complexity MIMO schemes that have been extensively researched for low-GHz (below 6GHz) communications. Recently, they have been considered and shown to be promising also for millimeter – wave (mmWave) communications. In the simplest possible case, they require only one RF chain both at the transmitter (TX) and receiver (RX), and this makes the schemes especially attractive for mmWave communications, in which the number of RF chains needs to be as low as possible. Despite of a few early works on theoretical analysis of SM\/GSM for mmWave communications, there have been no investigations using real-world channel data. We focus on the office line – of – sight (LOS) scenario and investigate three problems: 1) the performance of GSM using only the measured LOS component as compared to ideal pure LOS channels; 2) the impact of the (measured) non-LOS (NLOS) components on the channel capacity and SEP of GSM; and 3) possible simple modulation and reception algorithms for GSM that rely only on the LOS component of the channel. Our results on one hand validate the main claims of previous studies based on ideal pure LOS channels, but, on the other hand, also lead to novel findings that result from the consideration of NLOS components of the channel. Based on study using a practical (simple) receiver, one major conclusion is that NLOS components are harmful to the SEP of GSM and should be avoided.
\nbibTeX Reference<\/b>
\n@ARTICLE{38_LIU2016_IEEE_TWC,
\n author = {LIU, Peng and BLUMENSTEIN, Jiri and PEROVIC, Nemanja Stefan and DI
\n\tRENZO, Marco and SPRINGER, Andreas},
\n title = {Experimental Assessment of Generalized Spatial Modulation MIMO over
\n\t60 GHz Indoor Channels},
\n journal = {IEEE Transactions on Wireless Communications},
\n year = {2016},
\n pages = {1–27},
\n note = {Submitted}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

2015<\/div>\n
\n
\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., MAR\u0160\u00c1LEK, R., MECKLENBR\u00c4UKER, C.<\/div>\n
Measurements of Ultra Wide Band In-vehicle channel – statistical description and TOA positioning feasibility study<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., MAR\u0160\u00c1LEK, R., MECKLENBR\u00c4UKER, C. Measurements of Ultra Wide Band In-vehicle channel – statistical description and TOA positioning feasibility study. EURASIP Journal of Wireless Communication and Networking, 2015, vol. 2015, no. 1 Springer, p. 1-10. ISSN: 1687-1499.<\/div>\n

Abstract<\/b>
\nThis paper reports on a real-world wireless channel measurement campaign for in-vehicle scenarios in the Ultra Wide Bandwidth (UWB) frequency range 3-11 GHz. The effects of antenna placement in the vehicle’s passenger compartment, as well as the effects due to the presence of passengers are studied. The measurements have been carried out in the frequency domain and the corresponding channel impulse responses (CIRs) have been estimated by inverse Fourier transform. The in uence of a specific band group selection within the whole UWB range is also given. Statistical analysis of the measured channel transfer functions then gives a description of the wireless channel statistics in the form of a generalized extreme value process. The corresponding parameter sets are estimated and documented for all permutations of antenna placement and occupancy inside the vehicle’s passenger compartment. Further, we have carried out a feasibility study of an in-vehicle UWB based localization system based on time of arrival (TOA). The positioning performance is evaluated in terms of average error and standard deviation.
\nbibTeX Reference<\/b>
\n@ARTICLE{07_BLUMENSTEIN2015_EURASIP,
\n author = {BLUMENSTEIN, Jiri and PROKES, Ales and MIKULASEK, Tomas and MARSALEK,
\n\tRoman and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {Measurements of Ultra Wide Band In-vehicle channel – statistical
\n\tdescription and TOA positioning feasibility study},
\n journal = {EURASIP Journal on Wireless Communications and Networking},
\n year = {2015},
\n volume = {2015},
\n pages = {1–10},
\n number = {1},
\n issn = {1687-1499}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., VYCHODIL, J., POSPISIL, M., MARSALEK, R., PROKES, A.; ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
CLEAN Algorithms for Intra-Vehicular Time-Domain UWB Channel Sounding<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., VYCHODIL, J., POSPISIL, M., MARSALEK, R., PROKES, A.; ZEMEN, T., MECKLENBR\u00c4UKER, C. CLEAN Algorithms for Intra-Vehicular Time-Domain UWB Channel Sounding. 5th International Conference on Pervasive and Embedded Computing and Communication Systems, (PECCS 2015). ESEO Angers, Loire Valley France, February 2015, p. 224-229.<\/div>\n

Abstract<\/b>
\nA comparison of two variants of CLEAN, a time-domain serial subtractive deconvolution algorithm, is presented. Appropriate statistical metrics for assessing the relative merit of the deconvolution technique are identified in the context of intra vehicle ultra wide band transmission, and the better variant was selected based on its performance over a standard IEEE channel simulation testbed. The chosen method is then applied to extract important channel characteristics for a real-world channel sounding experiment performed inside a passenger car.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{08_CHANDRA2015_PECCS,
\n author = {CHANDRA, Aniruddha and BLUMENSTEIN, Jiri and MIKULASEK, Tomas and
\n\tVYCHODIL, Josef and POSPISIL, Martin and MARSALEK, Roman and PROKES,
\n\tAles and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {CLEAN algorithms for intra-vehicular time-domain UWB channel sounding},
\n booktitle = {Proceedings of the International Conference on Pervasive and Embedded
\n\tComputing and Communication Systems (PECCS)},
\n year = {2015},
\n pages = {224–229},
\n address = {Angers (France)},
\n isbn = {978-989-758-084-0}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, Ch.<\/div>\n
In-vehicle channel sounding in the 5.8 – GHz band<\/div>\n
More information<\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, Ch. In-vehicle channel sounding in the 5.8 – GHz band, EURASIP Journal of Wireless Communication and Networking, 2015, vol. 2015, no. 1 . Springer, p. 1-9. ISSN: 1687-1499.<\/div>\n

Abstract<\/b>
\nThe article reports vehicular channel measurements in the frequency band 5.8 GHz for IEEE 802.11p standard. Experiments for both intra-vehicle and out-of-vehicle environments were carried out. It was observed that the large scale variations (LSVs) of the power delay pro\u2014les (PDPs) can be best described through a two-term exponential decay model, in contrast to the linear models which are suitable for popular ultra wide band (UWB) systems operating in the 3-11 GHz band. The small scale variations (SSVs) are separated from PDP by subtracting the LSV, and characterized utilizing logistic, generalized extreme value (GEV), and normal distributions. Two sample Kolmogorov-Smirnov (K-S) tests validated that the logistic distribution is optimal for in-car, whereas GEV serves better for out-of-car measurements. For each measurement, the LSV trend was used to construct the respective channel impulse response (CIR), i.e. tap gains at di\u00aeerent delays. Next, the CIR information is fed to a 802.11p simulation tested to evaluate the bit error rate (BER) performance, following a Rician model. The BER results strongly vouch for the suitability of the protocol for in-car as well as out-of-car wireless applications.
\nbibTeX Reference<\/b>
\n@ARTICLE{09_KUKOLEV2015_EURASIP,
\n author = {KUKOLEV, Pavel and CHANDRA, Aniruddha and MIKULASEK, Tomas and PROKES,
\n\tAles and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {In-vehicle channel sounding in the 5.8 – GHz band},
\n journal = {EURASIP Journal on Wireless Communications and Networking},
\n year = {2015},
\n volume = {2015},
\n pages = {1–9},
\n number = {1},
\n issn = {1687-1499}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
MECKLENBR\u00c4UKER, CH. PROKE\u0160, A., BLUMENSTEIN, J., ZEMEN, T.<\/div>\n
Characterization of short range intra-vehicle wireless links comparing Ultrawideband 3-11 GHz and Millimeter Waves 55-65 GHz<\/div>\n
More information<\/div>\n
\n
MECKLENBR\u00c4UKER, CH. PROKE\u0160, A., BLUMENSTEIN, J., ZEMEN, T. Characterization of short range intra-vehicle wireless links comparing Ultrawideband 3-11 GHz and Millimeter Waves 55-65 GHz. Invited Paper to Workshop on Advances of Microwave Technologies for Vehicular Communication, IEEE International Microwave Symposium, Phoenix (AZ), USA, 17-22 May 2015.<\/div>\n

Abstract<\/b>
\nThis contribution reports on in-vehicle radio propagation channel measurements for in-vehicle sensors in the Ultra Wide Bandwidth (UWB) frequency range 3-11 GHz and Millimeter Waves (MMW) 55-65 GHz. The effects of antenna placement in the vehicle\u2019s compartment, line of sight (LOS) and non-line of sight (NLOS) scenarios, as well as the effects due to the presence of passengers are studied. Statistics of the measured transfer functions result in a description of the channel’s propagation loss and reverberation characteristics. We compare the UWB and MMW channel characteristics in detail.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{10_MECKLENBRAUKER2015_IMS,
\n author = {MECKLENBRAUKER, Christoph and PROKES, Ales and BLUMENSTEIN, Jiri
\n\tand ZEMEN, Thomas},
\n title = {Characterization of short range intra-vehicle wireless links comparing
\n\tultrawideband 3–11 GHz and millimeter waves 55–65 GHz},
\n booktitle = {Proceedings of the IEEE MTT-S International Microwave Symposium (IMS),
\n\tWorkshop on Advances of Microwave Technologies for Vehicular Communication},
\n year = {2015},
\n pages = {1–24},
\n address = {Phoenix (USA)},
\n note = {(Invited)}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
MIKUL\u00c1\u0160EK, T., LACIK, J., RAIDA, Z.<\/div>\n
SIW Slot Antennas Utilized for 60-GHz Channel Characterization<\/div>\n
More information<\/div>\n
\n
MIKUL\u00c1\u0160EK, T., LACIK, J., RAIDA, Z. SIW. Slot Antennas Utilized for 60-GHz Channel Characterization, Microwave and Optical Technology Letters, Wiley Periodicals, Inc. 2015, vol. 57, no. 6, p. 1365-1370. ISSN: 1098-2760.<\/div>\n

Abstract<\/b>
\nIn this work, substrate integrated waveguide (SIW) slot antennas are proposed for 60-GHz channel characterization. The antennas consist of a group of three longitudinal slots placed in one or both broad walls of an SIW. Depending on the placement of the slot group, the SIW slot antenna achieves a directional or omnidirectional radiation pattern. An SIW slot antenna is naturally a narrow-band structure; however, using different self-resonant frequencies of the slots in the group ensures a wide operation frequency band (55\u201365 GHz). In this way, new utilization possibilities of the SIW slot antennas are proposed. The antenna design is performed in the full-wave electromagnetic solver ANSYS HFSS and verified by measurement. Experimental results validate good impedance matching and a directional or omnidirectional radiation pattern of the fabricatedantennas.
\nbibTeX Reference<\/b>
\n@ARTICLE{11_MIKULASEK2015_MOTL,
\n author = {MIKULASEK, Tomas and LACIK, Jaroslav and RAIDA, Zbynek},
\n title = {SIW slot antennas utilized for 60-GHz channel characterization},
\n journal = {Microwave and Optical Technology Letters},
\n year = {2015},
\n volume = {57},
\n pages = {1365–1370},
\n number = {6},
\n issn = {1098-2760}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., BLUMENSTEIN, J., KUKOLEV, P., VYCHODIL, J., MIKUL\u00c1\u0160EK, T., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
Intra vehicular wireless channel measurements<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., BLUMENSTEIN, J., KUKOLEV, P., VYCHODIL, J., MIKUL\u00c1\u0160EK, T., ZEMEN, T., MECKLENBR\u00c4UKER, C. Intra vehicular wireless channel measurements. In European Project Space on Information and Communication Systems. Portugal: SCITEPRESS \u2013 Science and Technology Publications, Lda., 2015. s. 3-28. ISBN: 978-989-758-155-7.<\/div>\n

Abstract<\/b>
\nIntra vehicular communication is an emerging field of research due to its potential applications in safety of passengers, navigational and localization aids for driver, and multimedia infotainment. This chapter describes the wireless channel sounding activities performed inside a typical passenger car under the SoMoPro and the GACR projects. Three different channel sounding architectures are developed for the purpose, namely direct pulse based sounding, frequency domain sounding and pseudo noise sequence based time domain sounding. Experiments with different placements of transmitter and receiver antennas inside the car were performed for both the ultra-wide-band and millimeter wave band. Channel transfer functions and impulse responses extracted from all these measurement campaigns are utilized to construct several deterministic and statistical channel models. The models are useful for designing intra vehicular wireless links and for devising novel vehicular localization algorithms.
\nbibTeX Reference<\/b>
\n@INBOOK{12_CHANDRA2015_SCITEPRESS,
\n chapter = {Intra vehicular wireless channel measurements},
\n pages = {3–28},
\n title = {European Project Space on Information and Communication Systems},
\n publisher = {SCITEPRESS \u2013 Science and Technology Publications},
\n year = {2015},
\n author = {CHANDRA, Aniruddha and PROKES, Ales and BLUMENSTEIN, Jiri and KUKOLEV,
\n\tPavel and VYCHODIL, Josef and MIKULASEK, Tomas and ZEMEN, Thomas
\n\tand MECKLENBRAUKER, Christoph},
\n address = {Portugal},
\n isbn = {978-989-758-155-7}
\n}\n<\/div>\n<\/div>\n<\/div>\n

Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
NALLAGONDA S., CHANDRA A., ROY S. D., KUNDU S., KUKOLEV P., PROKES A.<\/div>\n
Detection performance of cooperative spectrum sensing with Hard Decision Fusion in fading channels<\/div>\n
More information<\/div>\n
\n
NALLAGONDA, S., CHANDRA, A., ROY, S. D., KUNDU, S., KUKOLEV, P. and PROKES, A. Detection Performance of Cooperative Spectrum Sensing with Hard Decision Fusion in Fading Channels. International Journal of Electronics, Taylor & Francis 2016, vol. 103, issue 2, p. 297-321. ISSN 0020-7217.<\/div>\n

Abstract<\/b>
\nIn this paper, we investigate the detection performance of cooperative spectrum sensing (CSS) using energy detector (ED) in several fading scenarios. The fading environments comprises of relatively less-studied Hoyt and Weibull channels in addition to the conventional Rayleigh, Rician, Nakagami-m, and log-normal shadowing channels. We have presented an analytical framework for evaluating different probabilities related to spectrum sensing, i.e. missed detection, false alarm, and total error due to both of them, for all the fading\/ shadowing models mentioned. The major theoretical contribution is, however, the derivation of closed-form expressions for probability of detection. Based on our developed framework, we present performance results of CSS under various hard decision fusion strategies such as OR rule, AND rule, and Majority rule. Effects of sensing channel signal to noise ratio (SNR), detection threshold, fusion rules, number of cooperating CRs, and fading\/ shadowing parameters on the sensing performance have been illustrated. The performance improvement achieved with CSS over a single CR based sensing is depicted in terms of total error probability. Further, an optimal threshold that minimizes total error probability has been indicated for all the fading\/ shadowing channels.
\nbibTeX Reference<\/b>
\n@ARTICLE{13_NALLAGONDA2015_IJE,
\n author = {NALLAGONDA, S. and CHANDRA, Aniruddha and ROY, S. D. and KUNDU, S.
\n\tand KUKOLEV, Pavel and PROKES, Ales},
\n title = {Detection Performance of Cooperative Spectrum Sensing with Hard Decision
\n\tFusion in Fading Channels},
\n journal = {International Journal of Electronics, Taylor \\& Francis},
\n year = {2015},
\n volume = {103},
\n pages = {297–321},
\n number = {2},
\n issn = {0020-7217}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPresented<\/b><\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., MECKLENBR\u00c4UKER, C.<\/div>\n
Research Into Wireless Channels for Intra-vehicle Communication and Positioning<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., PROKE\u0160, A., MECKLENBR\u00c4UKER, C. Research Into Wireless Channels for Intra-vehicle Communication and Positioning. Talk presented at PECCS special session European Project Space, Angers, France, 2015.
\nbibTeX Reference<\/b>
\n@CONFERENCE{14_CHANDRA2015_PECCS_talk,
\n author = {CHANDRA, Aniruddha and PROKES, Ales and MECKLENBRAUKER, Christoph},
\n title = {Research Into Wireless Channels for Intra-vehicle Communication and
\n\tPositioning},
\n booktitle = {Talk presented at PECCS special session European Project Space},
\n year = {2015},
\n address = {Angers (France)},
\n url = {http:\/\/www.peccs.org\/EPSProgram.aspx?y=2015}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., VYCHODIL, J., MAR\u0160\u00c1LEK, R., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
Serial subtractive deconvolution algorithms for time-domain ultra-wide band in-vehicle channel sounding<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., VYCHODIL, J., MAR\u0160\u00c1LEK, R., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C. Serial subtractive deconvolution algorithms for time-domain ultra-wide band in-vehicle channel sounding. IET Intelligent Transport Systems. vol. 9, no. 9, p. 870 – 880, 2015. ISSN: 1751- 9578.<\/div>\n

Abstract<\/b>
\nUltra-wide band (UWB) communication is expected to play a key role in next generation broadband intra vehicle wireless applications. The car compartment differs significantly from other well studied indoor or outdoor environments. Hence, channel sounding experiments are crucial for gaining a thorough knowledge of the UWB signal propagation characteristics in such a medium. Time domain channel sounding campaigns often employ some sort of deconvolution during measurement post processing as the measured signal in these experiments is the convolution of the channel response and the probing pulse which violates the Nyquist criterion. In this study, a comparison of two variants of time-domain serial subtractive deconvolution algorithm, popularly known as CLEAN, is presented. Appropriate statistical metrics for assessing the relative merit of a deconvolution technique are identified in the context of intra vehicle UWB transmission, and the better algorithm is selected based on its performance over a standard IEEE channel simulation testbed. The chosen method is then applied toextract power delay profile and delay parameters from an empirical time domain sounding experiment performed inside a passenger car. The effects of passenger occupancy, transmitter receiver separation and absence of direct transmission path are studied.
\nbibTeX Reference<\/b>
\n@ARTICLE{15_CHANDRA2015_IET,
\n author = {CHANDRA, Aniruddha and BLUMENSTEIN, Jiri and MIKULASEK, Tomas and
\n\tVYCHODIL, Josef and MARSALEK, Roman and PROKES, Ales and ZEMEN, Thomas
\n\tand MECKLENBRAUKER, Christoph},
\n title = {Serial subtractive deconvolution algorithms for time-domain ultra-wide
\n\tband in-vehicle channel sounding},
\n journal = {IET Intelligent Transport Systems},
\n year = {2015},
\n volume = {9},
\n pages = {870–880},
\n number = {9},
\n issn = {1751-9578}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
Intra-Vehicular Path Loss Comparison of UWB Channel for 3-11 GHz and 55-65 GHz<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C. Intra-Vehicular Path Loss Comparison of UWB Channel for 3-11 GHz and 55-65 GHz. In IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB). Montreal, Canada: 2015. p. 1-4. ISBN: 978-1-4673-6555- 0.<\/div>\n

Abstract<\/b>
\nThis paper provides a comparison of a real-world intra-vehicular radio channel measurements of the ultra-wide frequency bands, namely the 3\u201311 GHz and the 55\u201365 GHz. The measurement campaign was performed utilizing a vector network analyzer (VNA) and a frequency domain method ensuring a high dynamic range of 70 dB and a frequency resolution of 10 MHz. An inverse Fourier transform is exploited for a transition of the measured data into the time domain and to obtain a channel impulse response (CIR). A delay spread and a path loss are derived and compared. Measured data is freely available online: http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{16_BLUMENSTEIN2015_ICUWB,
\n author = {BLUMENSTEIN, Jiri and MIKULASEK, Tomas and PROKES, Ales and ZEMEN,
\n\tThomas and MECKLENBRAUKER, Christoph},
\n title = {Intra-Vehicular Path Loss Comparison of UWB Channel for 3-11 GHz
\n\tand 55-65 GHz},
\n booktitle = {Proceedings of the IEEE International Conference on Ubiquitous Wireless
\n\tBroadband (ICUWB)},
\n year = {2015},
\n pages = {1–4},
\n address = {Montreal (Canada)},
\n isbn = {978-1-4673-6555-0}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKULASEK, T., PROKES, A.<\/div>\n
Out of vehicle channel sounding in 5.8 GHz band<\/div>\n
More information<\/div>\n
\n
KUKOLEV, P., CHANDRA, A., MIKULASEK, T., PROKES, A. Out of vehicle channel sounding in 5.8 GHz band. In Proc. of the 7th International Workshop on Reliable Networks Design and Modeling (RNDM), Munich, 2015, p. 1-4. ISBN: 978-1-4673-8049-2.<\/div>\n

Abstract<\/b>
\nThe article reports vehicular channel measurements in the frequency band of 5.8 GHz for IEEE 802.11p standard. Experiments for both intra-vehicle and out-of-vehicle environments were carried out. It was observed that the large-scale variations (LSVs) of the power delay profiles (PDPs) can be best described through a two-term exponential decay model, in contrast to the linear models which are suitable for popular ultra-wideband (UWB) systems operating in the 3- to 11-GHz band. The small-scale variations (SSVs) are separated from the PDP by subtracting the LSV and characterized utilizing logistic, generalized extreme value (GEV), and normal distributions. Two sample KolmogorovSmirnov (K-S) tests validated that the logistic distribution is optimal for in-car, whereas the GEV distribution serves better for out-of-car measurements. For each measurement, the LSV trend was used to construct the respective channel impulse response (CIR), i.e., tap gains at different delays. Next, the CIR information is fed to an 802.11p simulation testbed to evaluate the bit error rate (BER) performance, following a Rician model. The BER results strongly vouch for the suitability of the protocol for in-car as well as out-of-car wireless applications in stationary environments.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{17_KUKOLEV2015_RNDM,
\n author = {KUKOLEV, Pavel and CHANDRA, Aniruddha and MIKULASEK, Tomas and PROKES,
\n\tAles},
\n title = {Out of vehicle channel sounding in 5.8 GHz band},
\n booktitle = {Proceedings of the 7th International Workshop on Reliable Networks
\n\tDesign and Modeling (RNDM)},
\n year = {2015},
\n pages = {1–4},
\n address = {Munich (Germany)},
\n isbn = {978-1-4673-8049-2}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A.<\/div>\n
Autoregressive model of channel transfer function for UWB link inside a passenger car<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Autoregressive model of channel transfer function for UWB link inside a passenger car. In Proc. of the 19th International Conference on Circuits, Systems, Communications and Computers (CSCC). WSEAS Applied Informatics & Communications. Zakynthos, Greece, 2015, p. 238-241. ISBN: 978-1-61804-318- 4. ISSN: 1790- 5117.<\/div>\n

Abstract<\/b>
\nThis article reports results of channel frequency transfer function measurements inside the passenger compartment of a four seated sedan car. The examined frequency range spans from 3 GHz to 11 GHz and covers the ultra wide band, a promising candidate for future automotive wireless standards. It is found that the complex transfer function may be decomposed into two terms, the first one being a real valued long term trend that characterizes frequency dependency with a power law, and the second term forms a complex correlative discrete series which may be represented via an autoregressive model. The proposed model is validated by comparing the simulated transfer function with the measured data. Simulated values for the coherence bandwidth, power delay profile, and the root mean square delay spread are also in good agreement with the experimental values.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{18_CHANDRA2015_CSCC_WSEAS,
\n author = {CHANDRA, Aniruddha and KUKOLEV, Pavel and MIKULASEK, Tomas and PROKES,
\n\tAles},
\n title = {Autoregressive model of channel transfer function for UWB link inside
\n\ta passenger car},
\n booktitle = {Proceedings of the 19th International Conference on Circuits, Systems,
\n\tCommunications and Computers (CSCC). WSEAS Applied Informatics \\&
\n\tCommunications},
\n year = {2015},
\n pages = {238–241},
\n address = {Zakynthos (Greece)},
\n isbn = {978-1-61804-318-4},
\n issn = {1790- 5117}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
KUKOLEV, P., CHANDRA, A., PROKE\u0160, A<\/div>\n
BER Performance of 802.11p in SISO and MIMO Fading Channels<\/div>\n
More information<\/div>\n
\n
KUKOLEV, P., CHANDRA, A., PROKE\u0160, A. BER performance of 802.11p in SISO, MISO, and MIMO fading channels. In Proc. 19th International Conference on Circuits, Systems, Communications and Computers (CSCC), Zakynthos, Greece, 2015. p. 89-93, ISBN: 978-1-61804-318-4.<\/div>\n

Abstract<\/b>
\nThis paper describes the simulation of the IEEE 802.11p standard with Single Input Single Output, Multiple Input Single Output and Multiple Input Multiple Output technologies. The aim of this article is to compare the performances of 802.11p with different numbers of transmit and receive antennas. The simulation model includes the Least Square channel estimator and Alamouti\u2019s space-time coding. The simulation results of the transmission over a Flat Rayleigh channel are presented and discussed.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{19_KUKOLEV2015_CSCC,
\n author = {KUKOLEV, Pavel and CHANDRA, Aniruddha and PROKES, Ales},
\n title = {BER performance of 802.11p in SISO, MISO, and MIMO fading channels},
\n booktitle = {Proc. 19th International Conference on Circuits, Systems, Communications
\n\tand Computers (CSCC)},
\n year = {2015},
\n pages = {89–93},
\n address = {Zakynthos, Greece},
\n isbn = {978-1-61804-318-4}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A.<\/div>\n
Frequency-domain in-vehicle channel modelling in mmW band<\/div>\n
More information<\/div>\n
\n
CHANDRA, A., KUKOLEV, P., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Frequency-domain in-vehicle channel modelling in mmW band. In Proc. 1st International Forum on Research and Technologies for Society and Industry (RTSI), Turin, Italy, 2015. p. 106-110. ISBN: 978-1-4673-8166-6.<\/div>\n

Abstract<\/b>
\nThe goal of this paper is to characterize frequency domain channel transfer function of intra vehicular millimeter wave links in the 60 GHz band. It is found that the complex transfer function may be decomposed into two terms, the first one being a real valued long term trend that characterizes frequency dependency with a power law, and the second term forms a complex correlative discrete series which may be represented via an autoregressive model. The proposed model is validated by comparing the simulated transfer function with the measured data. Simulated values for the coherence bandwidth, power delay profile, and the root mean square delay spread are also in good agreement with the experimental values.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{20_CHANDRA2015_RTSI,
\n author = {CHANDRA, Aniruddha and KUKOLEV, Pavel and MIKULASEK, Tomas and PROKES,
\n\tAles},
\n title = {Frequency-domain in-vehicle channel modelling in mmW band},
\n booktitle = {Proc. 1st International Forum on Research and Technologies for Society
\n\tand Industry (RTSI)},
\n year = {2015},
\n pages = {106–110},
\n address = {Turin, Italy},
\n isbn = {978-1-4673-8166-6}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
VYCHODIL, J., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., DERBEK, V.<\/div>\n
UWB time domain channel sounder<\/div>\n
More information<\/div>\n
\n
VYCHODIL, J., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., DERBEK, V. UWB time domain channel sounder. In Proc. 25th International Conference Radioelektronika, Pardubice, 2015, p. 268-271. ISBN: 978-1-4799-8117- 5.<\/div>\n

Abstract<\/b>
\nThis paper describes a time domain channel sounder based on pseudorandom binary sequences. The channel sounder system consists of several off-the-shelf laboratory instruments connected together and controlled from PC. Frequency band of interest is the unlicensed ultra wide band, 3\u201311 GHz. The system\u2019s parameters are discussed and compared to conventional solution, which uses vector network analyzer (VNA). Crucial feature of the proposed system is fast measurement speed. Example measurements are provided and compared to the measurements performed using the VNA.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{21_VYCHODIL2015_RADIOELEKTRONIKA,
\n author = {VYCHODIL, Josef and CHANDRA, Aniruddha and MIKULASEK, Tomas and PROKES,
\n\tAles and DERBEK, Vojtech},
\n title = {UWB time domain channel sounder},
\n booktitle = {Proc. 25th International Conference Radioelektronika},
\n year = {2015},
\n pages = {268–271},
\n address = {Pardubice, Czech republic},
\n isbn = {978-1-4799-8117- 5}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., BLUMENSTEIN, J., MECKLENBR\u00c4UKER, C., ZEMEN, T.<\/div>\n
Intra-Vehicle Ranging in Ultra- Wide and Millimeter Wave Bands<\/div>\n
More information<\/div>\n
\n
PROKE\u0160, A., MIKUL\u00c1\u0160EK, T., BLUMENSTEIN, J., MECKLENBR\u00c4UKER, C., ZEMEN, T. Intra-Vehicle Ranging in Ultra- Wide and Millimeter Wave Bands. In Proc. of IEEE Asia Pacific Conference on Wireless and Mobile (APWiMob). Bandung, Indonesia, 2015, p. 246 – 250. ISBN: 978-1-4799-8290- 5.<\/div>\n

Abstract<\/b>
\nThe paper deals with intra-vehicle ranging based on the time of arrival technique. The aim of the presented work is to compare the ranging accuracy in the 3 to 11 GHz ultra-wide band and the 56 to 64 GHz millimeter wave band. The comparison is performed using channel impulse responses calculated from complex transfer functions using a windowed IFFT. The complex transfer functions are measured by a four port vector network analyzer for empty and occupied car scenarios. The obtained results are discussed and differences in ranging accuracy between both bands are explained by means of several reference measurements carried out in an anechoic chamber.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{22_PROKES2015_APWIMOB,
\n author = {PROKES, Ales and MIKULASEK, Tomas and BLUMENSTEIN, Jiri and MECKLENBRAUKER,
\n\tChristoph and ZEMEN, Thomas},
\n title = {Intra-Vehicle Ranging in Ultra- Wide and Millimeter Wave Bands},
\n booktitle = {Proc. of IEEE Asia Pacific Conference on Wireless and Mobile (APWiMob)},
\n year = {2015},
\n pages = {246–250},
\n address = {Bandung, Indonesia},
\n isbn = {978-1-4799-8290- 5}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

2014<\/div>\n
\n
\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., MAR\u0160\u00c1LEK, R., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n
In-vehicle mm-Wave Channel Model and Measurement<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., MAR\u0160\u00c1LEK, R., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C. In-vehicle mm- Wave Channel Model and Measurement.<\/em> In Proc. of IEEE 80th Vehicular Technology Conference (VTC Fall). Vancouver, Canada, 2014, s. 1-5, ISBN: 978-1-4799-4450- 7.<\/div>\n

Abstract<\/b>
\nThis contribution documents and discusses recent wideband radio channel measurements carried out in the intra\u2013 vehicle environment. Channels in the millimeter-wave (MMW) frequency band have been measured in 55\u201365GHz using openended rectangular waveguides. We present a channel modeling approach based on a decomposition of spatially specific Channel Impulse Responses (CIRs) into large and small scale fading. The decomposition is done by the Hodrick-Prescott filter. We parametrize the small scale fading utilizing Maximum-likelihood estimates for the parameters of a generalized extreme value (GEV) distribution. The large scale fading is described by a two dimensional polynomial curve. We also compare simulated results with our measurement exploiting the two-sample Kolmogorov-Smirnov test.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{03_BLUMENSTEIN2014_VTC,
\n author = {BLUMENSTEIN, Jiri and MIKULASEK, Tomas and MARSALEK, Roman and PROKES,
\n\tAles and ZEMEN, Thomas and MECKLENBRAUKER, Christoph},
\n title = {In-vehicle mm-Wave Channel Model and Measurement},
\n booktitle = {Proceedings of the 80th IEEE Vehicular Technology Conference (VTC
\n\tFall)},
\n year = {2014},
\n pages = {1–5},
\n address = {Vancouver (Canada)},
\n isbn = {978-1-4799-4450-7}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J.; MIKUL\u00c1\u0160EK, T.; MAR\u0160\u00c1LEK, R.; CHANDRA, A.; PROKE\u0160, A.; ZEMEN, T.; MECKLENBR\u00c4UKER, C.<\/div>\n
In-vehicle UWB Channel Measurement, Model and Spatial Stationarity<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J.; MIKUL\u00c1\u0160EK, T.; MAR\u0160\u00c1LEK, R.; CHANDRA, A.; PROKE\u0160, A.; ZEMEN, T.; MECKLENBR\u00c4UKER, C. In-vehicle UWB Channel Measurement, Model and Spatial Stationarity. In 2014 IEEE Vehicular Networking Conference (VNC). 2014. s. 1-4. ISBN: 978-1-4799-7659- 1.<\/div>\n

Abstract<\/b>
\nThis contribution documents an ultra-wide band (UWB) channel measurement performed in an in-vehicle environment for the frequency range 3\u201311GHz. An emphasis is placed into an evaluation of a spatial consistency of measured channel characteristics in terms of Pearson correlation between measured channel impulse responses (CIRs). Moreover, the measured CIRs are reproducible via a two-part exponentially decaying envelope-delay profile (EDP). The small scale variation of received signal is parametrized utilizing a random process obeying the generalized extreme value (GEV) distribution. Validation of the channel model is demonstrated utilizing a two sample Kolmogorov-Smirnov (K-S) test.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{04_BLUMENSTEIN2014_VNC,
\n author = {BLUMENSTEIN, Jiri and MIKULASEK, Tomas and MARSALEK, Roman and CHANDRA,
\n\tAniruddha and PROKES, Ales and ZEMEN, Thomas and MECKLENBRAUKER,
\n\tChristoph},
\n title = {In-vehicle UWB Channel Measurement, Model and Spatial Stationarity},
\n booktitle = {Proceedings of the 2014 IEEE Vehicular Networking Conference (VNC)},
\n year = {2014},
\n address = {Paderborn (Germany)},
\n isbn = {978-1-4799-7659-1}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nConf<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
VYCHODIL, J., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., DERBEK, V.<\/div>\n
Measurement of In-Vehicle Channel \u2013 Feasibility of Ranging in UWB and MMW Band<\/div>\n
More information<\/div>\n
\n
VYCHODIL, J., BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A., DERBEK, V. Measurement of In-Vehicle Channel \u2013 Feasibility of Ranging in UWB and MMW Band. In Proc. of International Conference on Connected Vehicles and Expo (ICCVE 2014). Vienna, Austria, 2014, s. 1-5. ISBN: 9781479924929.<\/div>\n

Abstract<\/b>
\nThis paper provides results of radio channel measurement campaign carried out in the intra vehicle environment for ultra-wide band (UWB) and millimeter wave (MMW) frequency bands, namely 3–11 GHz and 55–65 GHz. In discussed frequency bands, we present and compare channel impulse responses (CIRs) for various antenna locations while considering the effect of passengers presence. On the basis of performed statistical evaluation of time of arrival (TOA) based ranging system deployed in mentioned bands, we discuss feasibility and precision of local positioning systems for intra vehicle ambiance.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{05_VYCHODIL2014_ICCVE,
\n author = {VYCHODIL, Josef and BLUMENSTEIN, Jiri and MIKULASEK, Tomas and PROKES,
\n\tAles and DERBEK, Vojtech},
\n title = {Channel estimation method for OFDM in low SNR based on two-dimensional
\n\tspreading},
\n booktitle = {Proceedings of the International Conference on Connected Vehicles
\n\tand Expo (ICCVE)},
\n year = {2014},
\n pages = {1–5},
\n address = {Vienna (Austria)},
\n isbn = {9781479924929}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J., MARSALEK, R., FEDRA, Z., PROKES, A., MECKLENBR\u00c4UKER, CH.<\/div>\n
Channel estimation method for OFDM in low SNR based on two-dimensional spreading.<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J., MARSALEK, R., FEDRA, Z., PROKES, A., MECKLENBR\u00c4UKER, CH. Channel estimation method for OFDM in low SNR based on two-dimensional spreading.<\/em> Wireless Personal Communications, Springer International Publishing AG 2014, Vol. 78, Issue 1, p. 715-728, ISSN: 0929- 6212.<\/div>\n

Abstract<\/b>
\nIn this paper, we present a channel estimation method based on two-dimensional signal spreading applicable to orthogonal frequency multiple access multicarrier systems. Our method exploits a spreading of a transmitted data signal as well as a pilot signal over the assigned frequency range and time period. As a spreading sequence we exploited orthogonal Walsh\u2013Hadamard sequences. When compared with traditional pilot symbol based channel estimation, our method is beneficial in low signal to noise ratio (SNR). For a comparison of our method with state-of-the-art channel estimation method, we utilized an open source LTE downlink simulator developed at TU Vienna. This enables a reproducibility of our results. Considering the LTE system, our method outperforms the traditional approach in typical range of SNR from -5 to 10 dB. For a comparison of a throughput performance, a number of channel models has been employed.
\nbibTeX Reference<\/b>
\n@ARTICLE{06_BLUMENSTEIN2014_WPC,
\n author = {BLUMENSTEIN, Jiri and MARSALEK, Roman and FEDRA, Zbynek and PROKES,
\n\tAles and MECKLENBRAUKER, Christoph},
\n title = {Channel estimation method for OFDM in low SNR based on two-dimensional
\n\tspreading},
\n journal = {Wireless Personal Communications},
\n year = {2014},
\n volume = {78},
\n pages = {715–728},
\n issn = {0929- 6212}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

2013<\/div>\n
\n
\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
BLUMENSTEIN, J.; PROKE\u0160, A.; MAR\u0160\u00c1LEK, R.; MECKLENBR\u00c4UKER, C.<\/div>\n
Impulse noise mitigation for OFDM by time-frequency spreading<\/div>\n
More information<\/div>\n
\n
BLUMENSTEIN, J.; PROKE\u0160, A.; MAR\u0160\u00c1LEK, R.; MECKLENBR\u00c4UKER, C. Impulse Noise Mitigation for OFDM by Time-Frequency Spreading. In Proc. of 6th International Workshop on Multiple Access Communications (MACOM 2013). Springer International Publishing, 2013, pp. 8-20.<\/div>\n

Abstract<\/b>
\nThis paper deals with the impulse interferences in modern vehicles and assesses the suitability of establishing in-vehicle wireless links replacing standard data cable bundles. According to our experiments, the standard UMTS Long Term Evolution (LTE) is highly affected by impulse noise. We compare it with a novel 2D signal spreading method exploiting the orthogonal Walsh-Hadamard sequences in order to spread the transmitted signal in time and frequency. This method requires minor modification of the 3GPP LTE standard while no additional bandwidth nor noticeable computational power is required. In the presence of impulse noise, the novel 2D spreading method outperforms the standard compliant LTE significantly. As a system model, we used an open source LTE downlink simulator developed at Vienna University of Technology and the Middleton Class A impulse noise model.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{01_BLUMENSTEIN2013_MACOM,
\n author = {BLUMENSTEIN, Jiri and MARSALEK, Roman and PROKES, Ales and MECKLENBRAUKER,
\n\tChristoph},
\n title = {Impulse Noise Mitigation for OFDM by Time-Frequency Spreading},
\n booktitle = {Proceedings of 6th International Workshop on Multiple Access Communications
\n\t(MACOM)},
\n year = {2013},
\n pages = {8–20},
\n publisher = {Springer International Publishing},
\n isbn = {978-3-319-03870-4}
\n}\n<\/div>\n<\/div>\n<\/div>\n

\n
Type:<\/em>
\nJimp<\/b>
\nStatus:<\/em>
\nPublished<\/b><\/div>\n
\n
TEJMLOV\u00c1, L.; \u0160EBESTA, J.<\/div>\n
Fusion methods for INS using neural networks for precision navigation<\/div>\n
More information<\/div>\n
\n
TEJMLOV\u00c1, L.; \u0160EBESTA, J. Fusion methods for INS using neural networks for precision navigation. In Proc. of 4th International Conference on Indoor Positioning and Indoor Navigation (IPIN 2013). 2013. pp. 1-2.<\/div>\n

Abstract<\/b>
\nThe system is based on inertial measurement unit (IMU), consisting of three-axis gyroscope, three-axis accelerometer and three-axis magnetometer. Those sensors give the current state of motion and it is possible to determine IMUs movements.
\nbibTeX Reference<\/b>
\n@INPROCEEDINGS{02_TEJMLOVA2013_IPIN,
\n author = {TEJMLOVA, Lenka and SEBESTA, Jiri},
\n title = {Fusion methods for INS using neural networks for precision navigation},
\n booktitle = {Proceedings of the International Conference on Indoor Positioning
\n\tand Indoor Navigation (IPIN)},
\n year = {2013},
\n pages = {814–815},
\n isbn = {978-1-4673-1954-6}
\n}\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Jimp<\/b> – Journal Impact Factor
\nJsc<\/b> – Journal in SCOPUS Database
\nConf<\/b> – Conference<\/p>\n","protected":false},"excerpt":{"rendered":"

2016 Type: Jimp Status: Published KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Out-of-vehicle time-of-arrival based localization in ultra-wide band More information KUKOLEV, P., CHANDRA, A., MIKUL\u00c1\u0160EK, T., PROKE\u0160, A. Out-of-vehicle time-of-arrival based localization in ultra-wide band. International Journal of Distributed Sensor Networks. 2016, vol. 12, no. 8, p. 1-11. ISSN: 1550-1329. Abstract The article […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false},"_links":{"self":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/pages\/91"}],"collection":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":0,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/pages\/91\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/media?parent=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}