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OFDM系统中基于导频的信道估计及其MATLAB仿真
引用本文:彭玲.OFDM系统中基于导频的信道估计及其MATLAB仿真[J].井冈山学院学报,2008,29(2):47-49.
作者姓名:彭玲
作者单位:惠州学院电子系 广东惠州516001
摘    要:本文介绍了正交频分复用(OFDM)系统中两类常用的信道估计算法:最小二乘(LS)和最小均方误差(MMSE)。在广义平稳的多径时变瑞利衰落信道模型下,利用MATLAB程序仿真实现了LS、MMSE以及简化的MMSE信道估计,得出了均方误差(MSE)和误符号率(SER)随信噪比(SNR)变化的曲线。仿真结果表明,MMSE算法的效果要优于LS,简化MMSE算法的运算复杂度介于LS和MMSE之间,且估计精度接近MMSE算法。

关 键 词:OFDM系统  正交频分复用  信道估计
文章编号:1673-4718(2008)02-0047-03
收稿时间:2007-11-12
修稿时间:2007年11月12

Channel estimation based on pilot and MATLAB simulation for OFDM systems
PENG Ling.Channel estimation based on pilot and MATLAB simulation for OFDM systems[J].Journal of Jinggangshan University,2008,29(2):47-49.
Authors:PENG Ling
Institution:PENG Ling (Electronics Department, Huizhou University, Huizhou 516001, China)
Abstract:The paper introduces two common channel estimation algorithms for orthogonal frequency division multiplexing(OFDM) systems: least square(is) and minimum mean square error(MMSE). It simulates IS, MMSE and simplified MMSE channel estimations by MATLAB in the time-varing multipath Rayleigh-fading model, and compares their performance accoding to mean square error(MSE) and symbol error rate(SER). The result shows that MMSE estimation is better than IS, and simplified MMSE is a method for compromising between complexity and performance.
Keywords:OFDM  channel estimation
本文献已被 CNKI 维普 万方数据 等数据库收录!
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