非线性信道的均衡算法研究

本文使用Hammerstein模型和维纳模型代替Volterra级数模型来模拟非线性结构以降低运算复杂度,提出了一个由Hammerstein模型和维纳模型构建成的非线性信道传输系统的模型.基于该系统模型,分别提出并推导了三种非线性信道的均衡算法:NCRLS算法、NCKalman算法和NCRPEM算法,并对这三种新算法的性能进行了比较.仿真结果表明,在剩余均方误差方面三种算法中NCKalman算法最小,NCRPEM算法次之,NCRLS算法较差;在收敛速度方面NCRPEM算法收敛最快,NCRLS算法次之,NCKalman算法较差.

Equalization Algorithms Based on Nonlinear Channel

In order to reduce the computational complexity,this paper adopts Hammerstein model and Wiener model,instead of the Volterra series model,to approach a non-linear system.Furthermore,based on Hammerstein model and Wiener model,a nonlinear transmission system model is also proposed.To this new model,three non-linear algorithms,i.e.Nonlinear Channel Recursive Least Squares(NCRLS) algorithm,Nonlinear Channel Kalman(NCKalman) algorithm and Nonlinear Channel Recursive Prediction Error Method(NCRPEM) algorithm,are...