Patent ID: 8565343

Claim:
A method for adjusting transmit power in a wireless communication device, wherein the wireless communication device comprises a transmitter having a power amplifier, the method comprising: periodically determining an error vector magnitude (EVM) level in the transmitter of the wireless communication device, wherein the EVM level is determined based at least in part on a difference between an ideal transmit signal without amplification, and an actual transmit signal with amplification; adjusting one or more transmit gain settings of a gain stage of the wireless communication device based at least in part on the determined EVM level in the transmitter; rotating a frequency of the actual transmit signal to each of a plurality of frequency offsets; determining a power spectrum density of the actual transmit signal based at least in part on said rotating; determining that the power spectrum density of the actual transmit signal does not comply with a spectral mask of the transmit signal; wherein adjusting the one or more transmit gain settings of the gain stage is also based at least in part on the determined power spectrum density of the actual transmit signal and the determination that the power spectrum density of the actual transmit signal does not comply with the spectral mask.