浅谈OFDM系统中基于导频的几种常用的信道估计算法

Discussion on Several Common Channel Estimation Algorithms Basedon Pilot Signal in OFDM System

无线通信系统由于信道环境复杂,具有很大的随机性,误码率常常很高.能否获得详细的信道信息,从而改善接收端的误码率,是衡量一个无线通信系统性能的重要指标.本文针对正交频分复用（OFDM）系统中基于导频的信道估计技术,分析几种常用的信道估计算法,并使用MATLAB对模拟信道中的几种估计算法进行仿真比较.

Because of the complex channel environment, wireless communication systems have greatrandomness, and the bit error rate is often very high. Whether we can obtain detailed channel informationto improve the bit error rate at the receiver is an important index to measure the performance of a wirelesscommunication system. This paper addresses the channel estimation techniques based on pilot signal in orthogonalfrequency division multiplexing （OFDM） systems and analyzes several common channel estimation algorithms inOFDM systems.In this paper, we will use MATLAB to simulate several commonly used estimation algorithms ofsimulation channel and compare them.