Patent ID: 9154337
Filing Date: 2015-10-06
Classification: H04L

Abstract:
1. An OFDM receiver comprising: an initial channel impulse response estimator that generates an initial channel impulse response having a number of samples in response to a received signal having one or more OFDM symbols; a time segment selector that selects a subset of samples from the initial channel impulse response as the subset of samples for analysis of an intermediate channel impulse response; an intermediate channel impulse response estimator that identifies paths within the subset of samples from the initial channel impulse response and generates an improved intermediate channel impulse response in a first iterative non-linear process; a channel impulse response estimator responsive to the intermediate channel impulse response estimator, the channel impulse response estimator performs a second iterative non-linear process to generate a channel impulse response; and an equalizer responsive to the channel impulse response and the OFDM symbol to generate an equalized OFDM symbol.