Patent ID: 8135101

Claim:
A method for performing data equalisation in a communication receiver, the communication receiver forming part of a communication system with transmit and receive diversity, the method including the steps of: (a) for each i-th receiver antenna and j-th transmitter antenna, calculating a channel response matrix H i,j from multi-path channel estimates; (b) each i-th receiver antenna, calculating a channel gain matrix G i from the channel response matrices H i,j and a scalar noise factor β; (c) calculating the middle column c 0 of the inverse G i −1 of the channel gain matrix G i ; (d) calculating filter coefficient vectors w i,j from the middle column c 0 of the inverse G i −1 of the channel gain matrix G i and the Hermitian transpose H i,j H of the corresponding channel response matrices H i,j ; (e) filtering input data r i received at each i-th receiver antenna with the corresponding filter coefficient vectors w i,j ; (f) despreading the filtered input data from each i-th receiver antenna; (g) applying phase compensation to the despread data; and (h) combining the despread data from all antennas to obtain received equalised data.