Patent ID: 8428525

Claim:
A method for compensating for distortions introduced in data streams during transmission thereof in a multi-antenna transmitter, the multi-antenna transmitter having a plurality of transmit paths coupled to respective transmit antennas, each transmit path including a power amplifier for amplifying a respective data stream, said method comprising: predistorting the data streams to compensate for post-amplifier crosstalk between the plurality of transmit paths occurring after the power amplifiers; after compensating for post-amplifier crosstalk, predistorting the data streams to compensate for non-linear distortions introduced by the power amplifiers; after compensating for distortions at the power amplifiers, predistorting the data streams to compensate for pre-amplifier crosstalk between the plurality of transmit paths occurring before the amplifiers; and transmitting each of the pre-distorted multiple data streams from a respective transmit antenna.