OFDM系统中基于导频的信道估计算法的比较  

Comparison of pilot-system-aided channel estimation algorithms for the OFDM system

作　　者：樊同亮 温玉仓 董恒杰 

机构地区：[1]公安海警学院电子技术系,浙江宁波315801

出　　处：《微型机与应用》2013年第2期48-50,53,共4页Microcomputer & Its Applications

摘　　要：正交频分复用(OFDM)是一种多载波调制技术,它能有效地克服多径干扰和码间干扰,是第四代移动通信的核心技术。对OFDM系统中基于导频的信道估计技术进行了比较。重点介绍了几种常用的信道估计算法、LS算法、LMMSE算法、SVD算法及DFT和DCT两种变换域算法,并给出了这些算法的仿真实现。Orthogonal frequency division multiplexing is the core technology of the fourth generation mobile communication which is a kind of multiple carrier modulation technology.It car, effectively overcome multi-path interference and inter-symbol in terference.The channel estimation techniques for OFDM systems based on pilot-aided arrangernenl are investigated.This paper introduces several common channel estimation algorithms in OFDM system. prsents the LS algorithrn, LMMSE algorithrn ,SVD algorithm, DFT and DCT algorithm,also gives the algorithm sirnulation.

关 键 词：正交频分复用 信道估计 最小二乘 最小均方误差 

分 类 号：TN929[电子电信—通信与信息系统]