一种新的OFDM-OQAM的信道估计方法  

A New OFDM-OQAM Channel Estimation Method

作　　者：范文兵[1] 范程龙 李海涛[1] 邢军阳[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2014年第1期112-115,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省教育厅自然科学基金项目(2010A510014);郑州市科技攻关项目(0910SGYG25229-6)

摘　　要：OFDM/OQAM系统由于不需要插入保护间隔,有更高的频谱效率,可以同时抵抗符号间干扰和信道间干扰等特点,已成为传统OFDM系统的一种替代方案.基于新的导频序列结构和OFDM/OQAM的系统特点,分析了系统相邻子载波之间的相关性,提出了一种新的基于导频序列结构的信道估计方法,通过计算相邻子载波的相关系数,有效降低干扰和噪声对信道估计的影响.仿真结果表明,这种导频结构有利于降低噪声对信道估计的影响,从而提高系统的性能.It is not necessary for the OFDM/OQAM system to insert the guard interval, with a higher spectral efficiency can be resistance to intersymbol interference and interchannel interference characteristics at the same time, the legacy OFDM system has become an ahernative. This paper is based on the new pilot sequence structure and the system features of the OFDM / OQAM, the system analyzes the correlation between adjacent subcarriers, a new channel estimation method based on the pilot sequences structure, by calculating the adja cent the correlation coefficient of subcarriers reduce the interference and noise on the channel estimation. The simulation results show that the structure of this pilot will help reduce the impact of noise on the channel esti mation to improve the performance of the system.

关 键 词：信道估计 滤波器 导频 

分 类 号：TM614[电气工程—电力系统及自动化]