Adaptive MLSE receiver: hybrid of persurvivor processing and tentative decision MLSE

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