Frequency domain equalizer for a beamformed system

摘要

A method, system, and computer program product for beamforming in a wireless communication system is disclosed. The method, system, and computer program product comprise a plurality of transmit antennas for a transmitter and at least one receive antenna for a receiver. The method, system, and computer program product comprise: initiating beamforming on a communication channel between the plurality of transmit antennas and the at least one receive antenna. The communication channel includes two data streams. A received signal to noise ratio (SNR) on one of the two data streams is weaker than a received SNR of the other data stream. The method, system, and computer program product include reallocating the transmit power between the stronger stream and the weaker stream to provide improved channel performance.

主权项

1. A method for beamforming in a wireless communication system, the system comprising a plurality of transmit antennas for a transmitter and at least one receive antenna of a receiver, the method comprising:
initiating beamforming on a communication channel between the plurality of transmit antennas and the at least one receive antenna; the communication channel including two data streams; reallocating the transmit power among tones of a data stream in the two data streams such that the received SNR on each weaker tone of the beamformed data stream is increased and the received SNR on each stronger tone of the beamformed data stream is proportionately decreased such that the resultant SNR on all tones of the beamformed data stream will be substantially same; determining whether the transmit power of at least one of the two scaled beamformed streams is too high for the receiver; and if the transmit power is too high; reducing the transmit power of both scaled beamformed streams by the same amount to prevent overload of the system.