Systems and methods for a multicarrier modulation system with a variable margin
A multicarrier modem has a plurality of carriers over which data is transmitted. By assigning, foe example, one or more different margins to the individual carriers the data rate and impairment immunity can be increased.
1 - 23 . (canceled)
24 . A method of enhancing multicarrier modulation communication over a plurality of subchannels comprising communicating over the plurality of subchannels using at least two different margins.
25 . The method of claim 24 , wherein the at least two margins are based on at least one of changes in the levels of a crosstalk, impulse noise, temperature changes, wire line length, radio frequency interference, a bit error rate, a signal to noise ratio, a seasonal change, statistical information, time information, day information and data rate information.
26 . The method of claim 24 , wherein the at least two margins are at least one of an average margin and a subchannel specific margin.
27 . The method of claim 26 , wherein the average margin is applied
28 . The method of claim 24 , further comprising determining at least one margin.
29 . The method of claim 24 , further comprising storing at least one margin.
30 - 45 . (canceled)