ML MIMO-OFDM Time Synchronization/Channel Estimation for Unknown Frequency Selective Fading Channels

Abstract

This paper addresses Maximum-Likelihood (ML) time synchronization algorithm joint with channel estimation for MIMO-OFDM systems in frequency selective fading channels. For this purpose a SISO joint Maximum likelihood (ML) synchronization algorithm with channel estimation is extended and generalised to MIMO systems. Timing failure probability is presented as a criterion to illustrate the robustness of the algorithm. The performance of the proposed synchronization approach, in terms oftimingfailure probability, was compared with SISO systems. Based on simulation results, the performance ofthe proposed algorithm is quite satisfying.