METHOD AND APPARATUS FOR PERFORMING SPECULATIVE DECISION FEEDBACK EQUALIZATION

摘要

A method and apparatus for equalizing a received signal are provided. The signal is filtered and transmitted over a channel (104) using an encoding scheme having transmit symbols. An example SerDes link 300 employs an non-return zero (NRZ) encoding scheme. The transmitted signal is shaped such that a transmit filter (302) (e.g., a FIR filter) and an equalizer (304) adjust a set of taps in an equalization window so that the taps from the set are substantially equal to one another. Inter-symbol interference is then compensated for in the equalized signal using a speculative digital front end (DFE) circuit (305) with significantly reduced comparator levels.