基于ⅡR非线性信道模型的LMS均衡算法  

LMS equalization algorithm based on the ⅡR nonlinear channel model

作　　者：马婵[1] 蒋树南[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《机电工程》2010年第3期71-74,共4页Journal of Mechanical & Electrical Engineering

摘　　要：在高速数据传输环境下,传输信道的非线性已成为影响信道误码性能的主要因素。针对由功率放大器带来的信道非线性问题,研究了一种基于ⅡR非线性信道结构的LMS算法,并构建出了一个基于ⅡR结构的非线性信道传输系统模型。基于该模型,推导了基于ⅡR结构的LMS算法来估计非线性均衡器的参数。仿真结果表明,在一定的信噪比范围内,提出的ⅡR LMS算法能达到令人满意的ED性能,有效抑制高速传输信道的码间干扰。In high-speed data transmission environment, the basic encoding rules（BER） performance was mostly affected by the non-linear feature of transmission channel. Aiming at the non-linear feature brought by the power amplifier, the least mean square （LMS） algorithm based on infinite impulse response（IIR） nonlinear channel structure and the construction of IIR structure based on nonlinear channel transmission system model were researched. According to the model, the parameters of nonlinear equalizer were estimated from LMS algorithm based on fIR structure. The simulation result shows, the proposed IIR LMS algorithm can achieve more satisfying ED performance within a certain range of SNR and the inter symbol interference（ISI） of high-speed transmission channel can be inhibited effectively by adopting non- linear equalization techniques.

关 键 词：最小均方 均衡 无限脉冲响应 

分 类 号：TN975[电子电信—信号与信息处理]