Patent ID: 8744009

Claim:
A multi-carrier communication system, comprising: a transmitter device designed to transmit input data, the transmitter device comprising: a peak-to-average power ratio (PAPR) reduction module designed to receive multiple versions of the input data to be transmitted as the transmit signal, and to select a particular version of the input data having a lowest PAPR as the particular selected transmit signal; a non-linear distortion (NLD) reduction module, wherein the NLD reduction module is designed to reduce power amplifier induced distortion in the particular selected transmit signal and generate an analog radio frequency (RF) signal in which remaining PA induced distortion has a known nonlinear distortion (NLD) characteristic; a power amplifier designed to: amplify the analog RF signal to increase signal power and generate an amplified RF transmit signal waveform having the known non-linear distortion (NLD) characteristic; and an antenna designed to transmit the amplified RF transmit signal waveform over a transmission channel as a transmitted signal; and a receiver designed to receive a received signal that represents a channel affected version of the transmitted signal, wherein the received signal includes remaining power amplifier distortion (PAD) induced by the power amplifier, wherein the remaining PAD has the known NLD characteristic, the receiver comprising: a demodulator designed to generate a demodulated output signal comprising demodulated data that represents an estimate of the input data from the transmitter determined from the received signal; and a PAD estimation and cancellation (PADEC) module designed to iteratively estimate, based on the known NLD characteristic of the demodulated output signal, remaining PAD caused by the power amplifier, and to iteratively cancel estimated PAD to reduce PAD in the received signal.