Patent ID: 7010049
Filing Date: 2006-03-07
Classification: H04L,H04Q

Abstract:
1. In a digital communication system, a method for estimating a channel response, said method comprising: receiving a time domain OFDM burst; converting said time domain OFDM burst to a frequency domain OFDM burst; extracting a vector of training symbols having known transmitted frequency domain values from said frequency domain OFDM burst; determining weights for said frequency domain training symbols based on measured noise and/or interference as statistically characterized over time, such that the respective weights are indicative of the corruption by interference and/or noise that respective frequency domain training symbols experience; and using said weights and said training symbols to estimate said channel response for different frequency locations of the frequency domain OFDM burst, such that training symbols experiencing greater corruption by interference and/or noise have less influence on the channel response estimate than training symbols experiencing less corruption by interference and/or noise.