| 高速移动环境中OFDM系统的迭代接收技术 |
| |
| 引用本文： | 侯晓谮,崔景伍,郑宝玉.高速移动环境中OFDM系统的迭代接收技术[J].江苏通信技术,2007,23(2):4-7. |
| |
| 作者姓名： | 侯晓谮 崔景伍 郑宝玉 |
| |
| 作者单位： | 南京邮电大学,通信与信息工程学院,南京,210003;南京邮电大学,通信与信息工程学院,南京,210003;南京邮电大学,通信与信息工程学院,南京,210003 |
| |
| 基金项目： | 教育部科学技术研究项目
,
江苏省自然科学重大基础项目 |
| |
| 摘 要： | 简要介绍B3G系统需要支持高容量、高质量和高移动性的数据传输要求,而OFDM(orthogonal frequency division multiplexing,正交频分复用)技术由于非常适合于高速数据传输而成为B3G系统的热点候选传输技术。然而在高速移动环境中,OFDM系统的子载波间干扰是影响系统性能的主要因素,为了使OFDM技术更好地应用于B3G系统,对高速移动环境中OFDM系统的接收技术进行了研究,提出了一种基于EM算法的联合信道估计与检测技术的迭代接收方案。仿真结果表明,提出的接收机算法可以大大降低子载波干扰。
|
| 关 键 词： | 正交频分复用 载波间干扰 期望值最大化 迭代接收 |
| 文章编号： | 1007-9513（2007）02-0004-04 |
| 修稿时间： | 2006-12-30 |
Iterative Receiver for High Mobility OFDM Systems |
| |
| HOU Xiao-yun,CUI Jing-wu,ZHENG Bao-yu.Iterative Receiver for High Mobility OFDM Systems[J].Jiangsu Communication Technology,2007,23(2):4-7. |
| |
| Authors: | HOU Xiao-yun CUI Jing-wu ZHENG Bao-yu |
| |
| Affiliation: | College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
| |
| Abstract: | OFDM is very suitable for high-speed data transmission,and recently has been received much attention in B3G systems which support high quality and high data rate transmission.However,in high mobility environment,the performance degradation due to inter-carrier interference(ICI) of OFDM is a key problem.In this paper,we present an EM-based OFDM receiver to iteratively channel estimate,equalize and decode.Simulation results show that the proposed receiver can reduce inter-carrier interference in fast fading channels. |
| |
| Keywords: | orthogonal frequency division multiplexing inter-carrier interference expectation-maximization iterative receiver |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
