Patent ID: 8340597

Claim:
A method of determining a calibration matrix for implicit beamforming, the method comprising: receiving a first estimate of a forward channel, wherein the forward channel is a communication channel from a first station to a second station; estimating a reverse channel from signals received from the second station, wherein the reverse channel is a communication channel from the second station to the first station; and developing the calibration matrix from i) the first estimate of the forward channel and ii) the estimate of the reverse channel, including inferring a second estimate of the forward channel from the estimate of the reverse channel, performing a singular value decomposition on the first estimate of the forward channel to generate a matrix V F , performing a singular value decomposition on the inferred second estimate of the forward channel to generate a matrix V I H , and developing the calibration factor as a function i) of the matrix V F and ii) the matrix V I H .