Doppler spectrum and performance of E-SDM systems in indoor time-varying MIMO channels

MIMO measurement campaigns were conducted in indoor environments. Based on the measured data, this paper examines the channel auto-correlation and Doppler spectrum in a case where a receiver is moving with respect to a fixed transmitter in the propagation environments with static scatterers. The bit error rate (BER) performance of 4 times 4 MIMO eigenbeam-space division multiplexing(E-SDM) system was evaluated in time-varying fading environments.