Patent ID: 7760800

Claim:
A method for estimating a Carrier-to-Interference and Noise Ratio (CINR) of an uplink channel by a Base Station (BS) in a wireless communication system, comprising: separating, by the BS, tiles that are subcarrier sets from a feedback signal received on the uplink channel; correlating, by the BS, all symbols included in the tiles of the feedback signal with each of codewords, squaring the absolute values of the correlations for the each codeword, summing the squared absolute correlations for the each codeword, and selecting a codeword with a maximum sum from among the codewords; calculating, by the BS, received power and noise power using all the symbols included in the tiles of the feedback signal correlated with the codeword with the maximum sum; and estimating, by the BS, the CINR of the uplink channel using the received power and the noise power.