Blind Peak-to-Average Power Ratio Reduction Technique for WiMAX RF Front-end

This paper proposes a new technique for peak-to-average power ratio (PAPR) reduction using post-compensation for a RF front-end of OFDM-based transmitters. A clipping function is first applied to the base band input signal in order to optimize the efficiency of the power amplifier (PA). Then a post-compensation technique is used to correct for the clipping in-band and out-of-band noise. The injection of the error signal, computed digitally in base band and transposed to the RF frequency, at the output of the PA allowed the reduction of the error vector magnitude and adjacent channel interference ratio