Systems and methods for a multicarrier modulation system with a variable margin

摘要

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.

主权项

1. A method in a multicarrier communications transceiver comprising:
transmitting a multicarrier symbol comprising a first plurality of carriers and a second plurality of carriers; transmitting a first plurality of bits on the first plurality of carriers using a first SNR margin; transmitting a second plurality of bits on the second plurality of carriers using a second SNR margin; wherein the first plurality of carriers is different than the second plurality of carriers, wherein the first SNR margin is different than the second SNR margin, and wherein the first SNR margin provides more robust transmission than the second SNR margin.