Patent ID: 7860179

Claim:
A method for power adaptation in a multicarrier code division multiple access communication system, the method comprising: receiving signals from a plurality of mobile stations in communication with at least one base station, each mobile station including an adaptive transmitter that includes a plurality of controllable gain amplifiers; estimating channel power gain for each mobile station in response to the received mobile station signals, where the channel power gain is for a subcarrier of the mobile station; ordering received signals from the mobile stations on a decreasing order basis for the corresponding estimated channel power gain from the mobile station associated with a highest channel gain to the mobile station associated with a lowest channel gain; and determining, in response to the ordered channel power gains, both a plurality of power amplifier gain levels for the controllable gain amplifiers in the adaptive transmitter and a plurality of power amplifier gain levels for controllable gain amplifiers in each of a plurality of adaptive receivers of the base station, each adaptive receiver being associated with one of the plurality of mobile stations, wherein the transmitter power amplifier gain levels and the adaptive receiver power amplifier gain levels are dynamically adapted to the estimated channel power gains for each symbol from the mobile stations in one of: a time domain for distributing available transmission power over all subcarriers to maintain a received signal strength for signals received at the base station at a predetermined level, or a frequency domain for distributing available transmission power over a subset of all subcarriers, wherein and the subset of subcarriers exhibits the subset highest estimated channel power gains.