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

—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.

• Type: Journal
• Year: 2010
• Where: VTC
• Authors: Adrian Ispas, Gerd Ascheid, Christian Schneider, Reiner S. Thomä
• Keywords: Communications, Local Time-frequency Regions, Quasi-stationarity Regions, VTC 2010, —A Common Simplification