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Analysis of Local Quasi-Stationarity Regions in an Urban Macrocell Scenario

Authors:: Ispas, A. , Schneider, C. , Ascheid, G. , Thomä, R.
Book Title:: Proc. 71st IEEE Veh. Tech. Conf. (VTC 2010-Spring)
Address:: Taipei, Taiwan
Date:: May. 2010
DOI:: 10.1109/VETECS.2010.5494098
Language:: English
Abstract:: A common simplification in the treatment of random linear channels is the wide-sense stationary and uncorrelated scattering (WSSUS) assumption. For wireless channels, this assumption is, however, only fulfilled in an approximative sense inside local time-frequency regions. Since algorithms in wireless digital communications often rely on knowledge of second order statistics of the channel, it is important to know the size of local quasi-stationarity regions. Thus, we determine quasi-stationarity regions in distance for an urban macrocell scenario. We observe that, based on the chosen measure and in our specific scenario, the time-frequency properties are dominant compared to the spatial properties in defining the size of quasi-stationarity regions. Furthermore, we find that in some cases the quasi-stationarity regions strongly depend on the mobile terminal orientation.
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