Patent ID: 6963604
Filing Date: 2005-11-08
Classification: H04L

Abstract:
1. An iterative method of equalizing an input signal received over a digital communication channel, said method comprising: (a) using a kernel density estimate where different values of a kernel size are indicative of either a blind or a decision-directed equalization mode; (b) processing a received signal using a blind equalization mode; (c) evaluating, on a block or sample basis, an error measure based on a distance among a distribution of an equalizer output and a constellation; (d) updating the kernel size based upon the error measure thereby facilitating automatic switching between the blind and decision-directed equalization modes, where the kernel size is initially set to a value indicative of the blind equalization mode; and (e) selectively applying blind equalization or decision-directed equalization to the input signal according to the updated kernel size for subsequent iterations of steps (c)-(e).