Patent ID: 6999539
Filing Date: 2006-02-14
Classification: H04L

Abstract:
1. Apparatus for a communication system in which data is communicated to a receiving station on a communication link susceptible to distortion, said apparatus for facilitating recovery of the data, communicated pursuant to a FDM (Frequency Division Multiplexing) communication scheme, said apparatus comprising: a derivative equalizer adapted to receive indications of values of the data, once delivered to the receiving station, said derivative equalizer including a linear predictor for forming a channel estimate of the communication link, the channel estimate comprising values of a channel impulse response, the values of the channel impulse response forming a weighted sequence formed of measured channel impulse response values multiplied together with time-invariant weighting values, the time-invariant weighting values selected responsive to a selected level of signal-to-noise ratio of the data, once received to the receiving station, said derivative equalizer for equalizing a time-derivative of the distortion and to form an equalized signal substantially free of non-static distortion.