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