Patent ID: 7248648
Filing Date: 2007-07-24
Classification: H04L

Abstract:
1. A receiver for use in a digital data transmission system where digital data is received in frames, and each of the frames includes a guard band of a given length, said receiver including a time-domain equalizer followed by demodulation and decoding circuitry, and an initialization processor, for computing operating parameters of the equalizer, the improvement comprising: said initialization processor computing, for a window of length equal to said length by employing a linear transform of an eigenvector corresponding to the smallest eigenvalue of a matrix derived from an impulse response of a channel through which said digital data passed before arriving at said receiver where the initialization processor determines a window of length equal to or less than a number of the guard band samples of the received digital data; computes an inverse Cholesky decomposition responsive to the determination made by the initialization processor; computes a Householder reduction responsive to the Cholesky decomposition; and performs a QL transform responsive to the Householder reduction.