Patent ID: 7792226

Claim:
A method for generating an estimate of carrier signal power S and interference-noise NI at the output of an equalizer in a wireless communication system, the equalizer being characterized by an equalization matrix, W H , and receiving signals from a plurality of receiving antennas, the method comprising: determining a variance, σ Z 2 , of the noise at the output of the equalizer dependent upon the equalization matrix, W H , and an estimate of a variance σ 2 of the noise at the receiving antennas; determining a variance of an interference power, σ I 2 , at the output of the equalizer dependent upon the equalization matrix, W H , a transfer function matrix, H, of transmission paths between a plurality of transmitting antennas and the plurality of receiving antennas, and a variance σ X 2 of the signals transmitted from the transmitting antennas; determining the power, S, of the carrier signal at the output of the equalizer dependent upon the equalization matrix, W H , the transfer function matrix, H, and the variance σ X 2 of the signals transmitted from the transmitting antennas; determining an estimated interference-noise as NI=σ I 2 +σ Z 2 ; and outputting at least one value derived from the carrier signal power S and interference noise NI to facilitate adaptation of the wireless communication system.