Study and Measurement of Scatter Effect on Wireless Channel using Realtime LTE Co-Operative Relays

University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

Author: Umer Zeeshan Ashraf; [2015]

Keywords: ;

Abstract: Relays are an important application of the fixed wireless access channel (FWA), with fast growing needs for higher throughput cooperative schemes are standardized to enhance throughput and cooperative relays are a realization of the standard. We study the effects of moving scatters on the FWA channel with simulation and real-time LTE measurements with testbed and characterize the FWA MIMO channel based on its performance and small scale movements in the environment, compare the LOS and NLOS effects of channel in relation to scatter movements and antenna height. The measurement and simulation results show that there is signicant effect of scatters on the characteristics of wireless channel. The doppler spectrum bandwidth increases in relation to the both speed and number of moving scatters. On performance metric MIMO capacity is studied and shown that capacity increases with antenna height in NLOS condition and presence of scatters improve the channel capacity in LOS condition.

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