Joint optimization of time and frequency synchronization based on polynomial sequences for OFDM systems

作     者：ZHANG Yan-yan ZHANG Jian-hua HUANG Jiang-chun ZHANG Ping 

作者机构：Key Laboratory of Universal Wireless Communication Beijing University of Posts and Telecommunications Ministry of Education Beijing 100876 China Wireless Technology Innovation Institute Beijing University of Posts and Telecommunications Beijing 100876 China 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2009年第16卷第3期

页      面：19-23页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080402[工学-测试计量技术及仪器] 070104[理学-应用数学] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 0701[理学-数学] 

基　　金：supported by Korean Electronics and Telecommunications Research Institute,the Hi-Tech Research and Development Program of China(2006AA01Z283) the Natural Science Foundation of China(60772113) 

主　　题：frequency synchronization joint optimization OFDM polynomial sequences timing synchronization 

摘      要：In orthogonal frequency division multiplexing （OFDM） systems, time and frequency synchronization are two critical elements for guaranteeing the orthogonality of OFDM subcarriers. Conventionally, with the employment of pseudo-noise （PN） sequences in preamble design, the preamble information is not fully utilized in both symbol timing offset acquisition and carrier frequency offset estimation. In this article, a new synchronization algorithm is proposed for jointly optimizing the time and frequency synchronization. This algorithm uses polynomial sequences as synchronization preamble instead of PN sequences. Theoretical analysis and simulation results indicate that the proposed algorithm is much more accurate and reliable than other existing methods.