Adaptive MLSE receiver: hybrid of per-survivor processing and tentative decision MLSE

An adaptive maximum likelihood sequence estimation (MLSE) receiver is proposed that employs both per-survivor processing (PSP)-MLSE and tentative decision (TD)-MLSE by selecting one of them based on the instantaneous signal-to-noise ratio (SNR). Since the instantaneous SNR varies according to the channel, the proposed hybrid receiver can automatically control its complexity relative to the channel environment. Computer simulation results indicate that when compared with the PSP-MLSE, the proposed receiver can significantly reduce complexity with only a slight degradation in performance.