Receiver carrier optimum additional phase shift method to reduce nonlinear distortion in M-Quadrature Amplitude Modulation systems

M-QAM systems are amplitude modulation systems, therefore they are very sensitive to nonlinear distortion caused by high power amplifier (HPA). This paper researches on solution of using receiver carrier optimum additional phase shift for evaluating the impacts of nonlinear distortion of the power amplifier to the quality system, aimed to improve distortion.