Patent ID: 6567473
Filing Date: 2003-05-20
Classification: H04L,H04M,Y02D

Abstract:
In a multicarrier communication system including a transmitter and a receiver, the transmitter and receiver using a first bit allocation table to transmit and receive, respectively, a plurality of codewords at a first bit rate in a first power mode, the plurality of codewords having a specified codeword size and including a specified number of parity bits for forward error correction, and a specified interleaving parameter for interleaving the plurality of codewords, a method for seamlessly entering a second power mode, the method comprising:storing a second bit allocation table at the receiver and at the transmitter to be used for receiving and transmitting, respectively, codewords at a second bit rate in the second power mode; synchronizing use of the second bit allocation table between the transmitter and receiver; seamlessly transitioning to the second power mode based on the specified interleaving parameter, the specified codeword size, and the specified number of parity bits for forward error correction used to transmit and receive codewords in the first power mode also being used to transmit and receive codewords in the second power mode; and transmitting and receiving codewords using the second bit allocation table.