Dual loop feedback pre-distortion in satellite communication

作者：Tang, Chengkai^*; Lian, Baowang; Zhang, Yi

来源：Journal of Systems Engineering and Electronics, 2013, 24(4): 586-591.

DOI：10.1109/JSEE.2013.00068

• satellite communication
• pre-distortion
• Volterra filter
• dual loop feedback
• mean square error

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.

• 出版日期2013-8
• 单位西北工业大学