Performance Analysis of STTC MIMO-OFDM Systems over Rayleigh Fading Channels

摘要

Multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) is one of the most promising scheme for achieving high data rate and large system capacity over wireless networks. This paper addresses the error performance analysis of the Space-time trellis code (STTC) MIMO-OFDM systems over quasistatic, frequency selective Rayleigh fading channels. Using the Chernoff bound combined with transfer function bounding technique, we provide a new analytical method. To quantify the upper bound of the error performance, we derive the probability density function (pdf) of the frequency domain fading channel and make a novel approximation to the Euclidean distance. Monte Carlo simulation results indicate that the derived upper bounds are quite accurate in a broad range of Signal-to-noise ratio (SNR).