An efficient method for calculating the step-sizes for a frequency-domain equalizer of a discrete-multitone communications system using signal power estimation and tone grouping (SPE-TG) while on-line. The SPE-TG method is used to calculate a plurality of subchannel step-sizes which are then stored in...http://www.google.de/patents/US20070127563?utm_source=gb-gplus-sharePatent US20070127563 - On-line step-size calculation using signal power estimation and tone grouping of the frequency-domain equalizer for DMT-based transceiver