Detection in the presence of media noise

摘要

A signal detector to detect data in an input signal. The signal detector includes a Viterbi-like detector to generate a most likely path corresponding to the data in the input signal. A linear post-processor determines at least one most likely error event in the most likely path, and generates revised paths based on the at least one most likely error event. A non-linear post-processor computes path metrics corresponding to each of the revised paths as a function of a non-linear noise model and selects one of the revised paths based on the path metrics.