Non-WSSUS Vehicular Channel Characterization at 5.2 GHz - Spectral Divergence and Time-Variant Coherence Parameters

Summary, in English

The scattering environment in vehicle-to-vehicle communication channels at 5.2 GHz changes rapidly. Hence the

wide-sense stationary (WSS) uncorrelated scattering (US) assumption for the fading process is valid for short time

intervals only. We characterize the spectral divergence of the local scattering function (LSF) sequence in order to

assess the non-WSSUS characteristics in different scenarios. We find that the vehicle-to-vehicle channels violate the

wide-sense stationarity much stronger than the US assumption. Additionally, we use the LSF to quantify the time

dependence of the channel coherence time and bandwidth. Both parameters vary strongly over time depending on the

chosen scenario. Furthermore the effect of the antenna radiation pattern on the fading process is quantified, which can

cause the strength of a multipath component to change by more than 40 dB in drive-by experiments.

• Author: Laura Bernadó; Thomas Zemen; Alexander Paier; Gerald Matz; Johan Kåredal; Nicolai Czink; Charlotte Dumard; Fredrik Tufvesson; Martin Hagenauer; Andreas Molisch; Christoph F. Mecklenbräuker
• Department/s: Department of Electrical and Information Technology
• Publishing year: 2008
• Language: English
• Document type: Conference paper
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Conference name: XXIXth URSI General Assembly 2008
• Conference date: 2008-08-07 - 2008-08-16
• Conference place: Chicago, Illinois, United States
• Status: Published
• Research group: Radio Systems