Position-Specific Statistics of 60 GHz Vehicular Channels During Overtaking

IEEE Access

Thomas Zemen¹  Laura Bernado¹  Markus Hofer¹  Erich Zochmann²  Stefan Pratschner²  Ales Prokes³  Jiri Blumenstein³  Markus Rupp⁴  Herbert Groll⁴  Martin Lerch⁴  Christoph F. Mecklenbrauker⁴  Sebastian Caban⁴  Seun Sangodoyin⁵  Andreas F. Molisch⁵ 

[1] Center for Digital Safety & Security, AIT Austrian Institute of Technology, Vienna, Austria;Christian Doppler Laboratory for Dependable Wireless Connectivity for the Society in Motion, Institute of Telecommunications, TU Wien, Vienna, Austria;Department of Radio Electronics, TU Brno, Brno, Czech Republic;Institute of Telecommunications, TU Wien, Vienna, Austria;Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA;

关键词: 5G mobile communication;    automotive engineering;    communication channels;    fading channels;    intelligent vehicles;    millimeter wave propagation;   

DOI  :  10.1109/ACCESS.2019.2893136

来源: DOAJ

【 摘 要 】

The time-variant vehicle-to-vehicle radio propagation channel in the frequency band from 59.75 to 60.25 GHz has been measured in an urban street in the city center of Vienna, Austria. We have measured a set of 30 vehicle-to-vehicle channel realizations to capture the effect of an overtaking vehicle. Our experiment was designed for characterizing the large-scale fading and the small-scale fading depending on the overtaking vehicle's position. We demonstrate that large overtaking vehicles boost the mean receive power by up to 10 dB. The analysis of the small-scale fading reveals that the two-wave with diffuse power (TWDP) fading model is adequate. By means of the model selection, we demonstrate the regions where the TWDP model is more favorable than the customarily used the Rician fading model. Furthermore, we analyze the time selectivity of our vehicular channel. To precisely define the Doppler and delay resolutions, a multitaper spectral estimator with discrete prolate spheroidal windows is used. The delay and Doppler profiles are inferred from the estimated local scattering function. Spatial filtering by the transmitting horn antenna decreases the delay and Doppler spread values. We observe that the RMS Doppler spread is below one-tenth of the maximum Doppler shift 2f v/c. For example, at 60 GHz, a relative speed of 30 km/h yields a maximum Doppler shift of approximately 3300 Hz. The maximum RMS Doppler spread of all observed vehicles is 450 Hz; the largest observed RMS delay spread is 4 ns.

【 授权许可】

Unknown