Patent ID: 7945222

Claim:
A method comprising: receiving a first transmission signal from a mobile communication device, said first transmission signal transmitted simultaneously using at least two antennas, wherein signals transmitted on first and second antennas differ by a first value of a transmit diversity parameter; transmitting to said mobile communication device a first feedback indicator based on a signal quality indicator of the received first transmission signal; calculating an expected signal quality indicator based at least on said signal quality indicator of the received first transmission signal and on said first feedback indicator transmitted to the mobile communication device; receiving a second transmission signal from the mobile communication device, said second transmission signal transmitted simultaneously using at least two antennas, wherein signals transmitted on first and second antennas differ by a second value of a transmit diversity parameter; transmitting to said mobile communication device a second feedback indicator based on a comparison of said expected signal quality indicator and a signal quality indicator of the received second transmission signal.