一种用于补偿卫星通信信道记忆非线性的数字基带预失真技术

Digital Baseband Predistortion Technology for Compensating Nonlinear Distortion with Memory Effects in Satellite Communication Channel

研究了卫星通信系统中记忆非线性信道的自适应数字基带预失真线性化技术,提出了一种基于记忆多项式的非直接学习结构的自适应基带预失真方案,给出了自适应算法。仿真结果表明,该方案能有效抑制带外频谱扩散,减小带内失真,降低误比特率,实现卫星通信系统中记忆非线性失真的自适应预失真。

This paper presents an efficient adaptive digital baseband predistortion linearizer to compensate the nonlinear distortion induced by nonlinear channel with memory effects in satellite communication syscoefficients of a memory - polynomials - based predistorter. Simulation results show that the proposed adaptive predistorter can effectively suppress spectral regrowth, reduce in - band distortion and BER in satellite communicaiton systems having a nonlinear channel with memory.