随之开始研究慢衰落信道条件下的几种主要信道估计算法：LS算法、MMSE算法、LMMSE算法与基于DFT的三种简化算法
围绕OFDM系统中信道估计算法进行深入研究
接着在研究移动信道特性后得出OFDM系统中慢衰落与快衰落两种信道条件下的信道等效模型
快衰落条件下的基于梳状导频的三种插值算法：最近插件算法、一阶线性插值算法与二阶多项式插值算法
） 摘要： 本文研究OFDM系统中的信道估计技术
最后结合MATLAB仿真对算法在不同条件下的误比特率、复杂度等性能进行分析比较研究
首先介绍OFDM系统信道估计技术的背景与分类
） Abstract： This paper discusses problems of channel estimation in OFDM communication systems
Based on the introduction of fading channels, channel estimation for OFDM is researched with the emphasis on the algorithms
First of all, the background and classification of the OFDM system channel estimation techniques are introduced and two equivalent channel models are given when we finish analyzing mobile channels
Then, LS algorithm, MMSE algorithm, LMMSE algorithm and 3 DFT-based algorithms in the slow fading channel are researched in details as well as three interpolation algorithms in the rapid fading channel: recent interpolation algorithm, first-order linear interpolation algorithm and the second-order polynomial interpolation algorithm
Finally, the analysis and comparison of these algorithms are made by computer simulation with the tool MATLAB, from which we draw a series of useful conclusions
Keywords： channel estimation; fading;OFDM 下载PDF阅读器 PDF全文下载： 初稿 （ 362 ） 作者简介： 通信联系人： 【收录情况】 中国科技论文在线： 王跃
OFDM系统信道估计算法研究[EB/OL]
