Patent ID: 8264406

Claim:
A method for performing direction of arrival (DOA) manifold calibration, the method comprising the steps of: determining by a base station, an angle θ to a mobile unit, wherein the determination is made by a technique other than determining a direction of a signal received from the mobile unit; receiving by the base station, an uplink transmission (Y(k,b)) from the mobile unit, wherein k is a subcarrier index and b is a time index; determining, by the base station, a dominant vector r(b) from the received uplink transmission; computing, by the base station, calibration coefficients C(b) based on the angle θ and r(b) and wherein computing the calibration coefficients comprises the steps of: determining W=diag(r(b)); and determining C(b)=diag(ĉ b ), where ĉ b =(W H W) −1 W H a(θ), where a (θ) is an array manifold vector; and applying, by the base station, the calibration coefficients to received uplink transmissions.