数字蜂房移动通信信道的一种模型

A Channel Model and Its New Adaptive Equalization Methodof Digital Cellular Mobile Communication

根据数字蜂房移动通信的信号传输过程建立了一种时变的ＦＩＲ信道模型，在此模型基础上，研究了一种新的自适应均衡方法，它基于系统辨识原理，采用改进的归一化变步长最小均方误差（ＭＮＶＳＬＭＳ）算法，克服由于多径效应引起的码间干扰（ＩＳＩ）．计算机模拟实验表明，本文提出的ＭＮＶＳ算法其跟踪性能明显优于ＮＶＳ和传统的ＬＭＳ算法，且运算量小，具有良好的实用性．

A time variant FIR channel model in terms of the process of digital cellular mobilecommunication is built,and a new equalization method on this model is presented. Based on thesystem identification principle,it adopts the Modified Normalized Variable Step(MNVS)Least MeanSquare (LMS)algorithm to reduce intersymbol interference(ISI)due to multipath.Simulation bycomputer indicates that the MNVS algorithm has better tracing ability than the NVS and theconventional LMS algorithms with small caiculation complexity and good practicability.