Joint blind timing synchronization and channel estimation for OFDM using receiver diversity

Abstract

Joint blind timing synchronization and channel estimation using receiver diversity are investigated in this paper. If the channel length is smaller than the cyclic prefix length, the diversity based timing synchronization can achieve perfect timing estimator at high SNR. At low SNR, multiple blocks can be used to improve the performance. The proposed algorithm is able to identify channel length, therefore it can facilitate blind channel estimation algorithms that require the knowledge of channel length.