Patent Document ID: 20120307939
Application ID: 13519320
Patent Flag: 0

Claim One:
1. A method for estimating the Channel Impulse Response (CIR) for a received signal in a receiver in a communication system, said method comprising: computing a coarse channel estimate at pilot locations in said received signal; computing a channel power estimate using said the computed coarse channel estimate; estimating a sum of interference power and a thermal noise variance; computing an optimal regularization term using said sum of interference power, said thermal noise variance, and said channel power estimate; computing an optimally regularized Modified Least Square (MLS) estimate using said optimal regularization term; computing a variance of noise in said regularized MLS estimate; identifying probable multipath tap locations in said received signal using said MLS estimate and said variance of noise in said regularized MLS estimate; classifying said probable multipath locations into significant multipath locations and locations with noise; and estimating the CIR said significant multipath locations.