Symbol-based decision feedback equalizer (DFE) with maximum likelihood sequence estimation for wireless receivers under multipath channels

摘要

A maximum likelihood sequence estimator (MLSE) sub-receiver having an MLSE equalizer device responsive to input data for processing the same to generate equalized data, said input data being generated from transmitted data by wireless transmission, said MLSE equalizer device processing said input data to generate residual channel response, said MLSE equalizer device using a known codebook and said residual channel response to generate an MLSE codebook, in accordance with an embodiment of the invention. The MLSE sub-receiver further includes an MLSE decoder responsive to said equalized data and said MLSE codebook for processing the same to determine maximum likelihood between said equalized data and said MLSE codebook, said MLSE decoder using said maximum likelihood for decoding said equalized data to generate a decoded transmitted data by mitigating the effects of multi-path communication channel due to wireless transmission of said transmitted data.