A Nonlinear Distortion Compensation Algorithm for 32APSK Modulation over Satellite Channels

  • Maoqiang Yang
  • Daoxing Guo
  • Kun Zhao
  • Lu Lu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 238)


It is essential to use high power amplifiers (HPA) on satellites because of the large attenuation during data transmission over satellite channels. The nonlinear characteristics of HPA will introduce spectral regrowth and constellation warping. As a countermeasure, many designers prefer to utilize the data pre-distortion technology implemented at the baseband as the simplicity of digital signal process realization. In this chapter, a nonlinearity distortion compensation algorithm, employing high order amplitude phase shift keying modulation scheme, combining with simplified data pre-distorter at the transmitter and nonlinear blind equalizer at the receiver is investigated to mitigate the nonlinear distortion. Matlab simulation results show that the nonlinear distortion of HPA is significantly decreased by adopting the joint scheme, and the computational complexity is greatly relieved.


Constant Modulus Algorithm High Power Amplifier Wiener Model Blind Equalization System Simulation Model 
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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Institute of Communications EngineeringPLA University of Science and TechnologyNanjingChina

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