Patent ID: 7801257
Filing Date: 2010-09-21
Classification: H04L

Abstract:
1. A method for receiving data in a digital receiver over a digital transmission link, comprising: oversampling a single encoded symbol stream received by the digital receiver; generating a plurality of sample streams from the oversampled encoded symbol stream, each of the plurality of sample streams being generated according to a different phase; detecting a symbol from each of the plurality of sample streams such that a symbol is detected from each of the sample streams to represent an associated symbol from the encoded symbol stream; estimating a channel response length for the digital transmission link by tracking a minimum symbol width, an average symbol width, or a combination of a minimum symbol width and an average symbol width for the symbols detected from the plurality of sample streams, wherein symbol width is represented in terms of number of samples per symbol; and adjusting an equalizer when the number of symbols comprising fewer than L samples (narrow symbols) exceeds a threshold, thereby reducing the number of narrow symbols; wherein the adjusting comprises making an upward adjustment to an equalization parameter and a downward adjustment to the equalization parameter in order to determine in which direction equalization improves.