Patent ID: 8457236

Claim:
A method for signal processing in a receiver, the method comprising: in the receiver, receiving a Multi-User Multiple-Input Multiple-Output (MU-MIMO) signal comprising at least a first signal, which is precoded using a first precoding scheme and is addressed to the receiver, and a second signal, which is precoded using a second precoding scheme; computing in the receiver an average error rate achievable in decoding the first signal in the presence of the second signal, wherein the average error rate is computed over only a partial subset of a set of possible choices of the second precoding scheme; selecting the first precoding scheme from among a plurality of available precoding schemes so as to satisfy a criterion defined over the average error rate; and sending from the receiver to a transmitter transmitting the first signal feedback, which depends on the selected first precoding scheme and causes the transmitter to control transmission of the first signal.