A decision feedback equalizer (DFE) comprises a feed-forward filter and a feedback filter. Blind training of the DFE is performed using a statistical-based tap updating algorithm for the feed-forward filter, and a symbol-based type of tap updating algorithm for the feedback filter....http://www.google.co.uk/patents/US6069917?utm_source=gb-gplus-sharePatent US6069917 - Blind training of a decision feedback equalizer
