Journal of Systems Engineering and Electronics ›› 2013, Vol. 24 ›› Issue (4): 586-591.doi: 10.1109/JSEE.2013.00068

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Dual loop feedback pre-distortion in satellite communication

Chengkai Tang*, Baowang Lian, and Yi Zhang   

  1. School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China
  • Online:2013-08-21 Published:2010-01-03


Since the satellite communication goes in the trend of high-frequency and fast speed, the coefficients updating and the precision of the traditional pre-distortion feedback methods need to be further improved. On this basis, this paper proposes dual loop feedback pre-distortion, which uses two first-order Volterra filter models to reduce the computing complexity and a dynamic error adjustment model to construct a revised feedback to ensure a better pre-distortion performance. The computation complexity, iterative convergence speed and precision of the proposed method are theoretically analyzed. Simulation results show that this dual loop feedback pre-distortion can speed the updating of coefficients and ensure the linearity of the amplifier output.