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多径瑞利衰落信道下的OFDM信号盲检测与参数估计

发表时间:2011-11-30  浏览量:1296  下载量:591
全部作者: 袁泽林,张文惠,胡乾林
作者单位: 西南交通大学信息科学与技术学院
摘 要: 提出一种基于循环前缀的正交频分复用(orthogonal frequency division multiplexing,OFDM),且适用于多径瑞利衰落信道环境的信号盲检测与参数估计算法,该算法利用多个OFDM符号的循环前缀与信号尾部相关系数之和进行OFDM信号的盲检测与参数估计,能够有效地抵抗多径时延带来的干扰。通过实验仿真证明该算法简单易行,具有很高的识别精度。
关 键 词: 信号检测;参数估计;循环前缀;多径瑞利衰落信道
Title: Research on the blind detection and parameter estimation for OFDM signals in multi-path Rayleigh fading channels
Author: YUAN Zelin, ZHANG Wenhui, HU Qianlin
Organization: School of Information Science and Technology, Southwest Jiaotong University
Abstract: This paper presented an algorithm for blind detection and parameter estimation of orthogonal frequency division multiplexing (OFDM) signals based on cyclic prefix which was suitable for multi-path Rayleigh fading channels. It used the sum of correlation coefficients of many OFDM symbols which could be against multi-path interference efficiently. The simulation experiment proved that it was a simple algorithm with much higher recognition accuracy.
Key words: signals detection; parameter estimation; cyclic prefix; multi-path Rayleigh fading channel
发表期数: 2011年11月第22期
引用格式: 袁泽林,张文惠,胡乾林. 多径瑞利衰落信道下的OFDM信号盲检测与参数估计[J]. 中国科技论文在线精品论文,2011,4(22):2100-2104.
 
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