Equalization and block-synchronization for OFDM signals

In this paper, blind algorithms based on a deterministic framework are proposed for equalization of finite-memory linear time-invariant (LTI) channels carrying OFDM signals. Unlike algorithms proposed to date, the channel memory is not restricted to be smaller than the cyclic prefix. It is shown that equalizers termed "synchronizer-equalizers" can be estimated blindly and always result in block-synchronized output, thus making separate synchronization unnecessary. These algorithms are based on a deterministic frame-work, and require short data records. Performance of the proposed algorithms is analyzed by computer simulations