Patent ID: 7724847

Claim:
A method comprising: receiving a signal that includes delayed reflection inter-symbol interference (ISI); reducing delayed reflection ISI in the signal including: converting a first portion of the signal into a soft decision symbol signal having a pulse amplitude modulation symbol and a noise signal, performing forward-error correction (FEC) on the soft decision symbol signal to generate a hard decision symbol signal having the pulse amplitude modulation symbol, providing the hard decision symbol signal to a channel reflection canceller, providing the soft decision symbol signal to the channel reflection canceller, and the channel reflection canceller generating a first delayed reflection ISI reducing signal, including: the channel reflection canceller identifying a best correlation of a section of a time domain window for the hard decision symbol signal to a corresponding section of a time domain window for the soft decision symbol signal; and the channel reflection canceller determining, based on the identifying, a delay corresponding to the delayed reflection ISI; and providing data based on the signal having reduced delayed reflection ISI.