Patent ID: 6389062
Filing Date: 2002-05-14
Classification: H04L

Abstract:
A method of modem communication between first and second modems over a communications facility, comprising the steps of:operating the first modem to issue communications to the second modem over the communications facility, wherein the communications comprise a plurality of subchannel signals; and operating the second modem to perform the steps of: converting the communications from time domain communications to frequency domain communications, wherein the frequency domain communications signals comprise a plurality of subchannel signals, and wherein each of the plurality of subchannel signals comprises an amplitude portion and a phase portion; equalizing the amplitude portion of each of the plurality of subchannel signals using fixed gain factors corresponding to each of the plurality of subchannel signals; and equalizing the phase portion of each of the plurality of subchannel signals using adjustable phase factors corresponding to each of the plurality of subchannel signals, wherein the adjustable phase factors are adjusted in response to previous communications from the first modem to the second modem.