POWER AMPLIFIER ADJUSTMENT FOR TRANSMIT BEAMFORMING IN MULTI-ANTENNA WIRELESS SYSTEMS

摘要

One or more beamsteering matrices are applied to one or more signals to be transmitted via multiple antennas. After the one or more beamsteering matrices are applied to the one or more signals, the plurality of signals is provided to a plurality of power amplifiers coupled to the multiple antennas. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and relative signal energies are determined based on the determined signal energies. Output power levels of the plurality of power amplifiers are adjusted based on the determined relative signal energies.

主权项

1. A method, comprising:
applying one or more beamsteering matrices to one or more signals to produce a plurality of signals to be transmitted via multiple antennas; after applying the one or more beamsteering matrices to the one or more signals, providing the plurality of signals to a plurality of power amplifiers coupled to the multiple antennas; determining signal energies for the plurality of signals provided to the plurality of power amplifiers; determining relative signal energies based on the determined signal energies; adjusting, based on the determined relative signal energies, output power levels of the plurality of power amplifiers; after adjusting output power levels of the plurality of power amplifiers, determining whether output power levels of the plurality of power amplifiers should be kept at or near a same level; and in response to determining that output power levels of the plurality of power amplifiers should be kept at or near the same level, (i) disabling adjustment of output power levels of the plurality of power amplifiers, and (ii) setting output power levels of the plurality of power amplifiers at or near the same level.