A Proposed Joint Timing and Frequency Synchronization Method for IEEE 802.16 OFDM Systems

被引：1
|
作者：
Yang Xiao-dong [1 ]
Wang Yue-qian [1 ]
Dou Zheng [1 ]
Feng Lin-lin [1 ]
机构：
[1] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin, Peoples R China
来源：
2008 11TH IEEE SINGAPORE INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS (ICCS), VOLS 1-3 | 2008年
关键词：
OFDM; IEEE; 802.16; joint timing and frequency synchronization;
D O I：
10.1109/ICCS.2008.4737138
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Orthogonal Frequency Division Multiplexing (OFDM) systems are sensitive to time and frequency offset errors. In this paper, a method of joint timing and frequency synchronization for OFDM systems has been proposed based on preamble structure defined in IEEE 802.16 standard. The proposed method in coarse frame detection has good robustness and anti-noise ability. The coarse and fine frequency offset estimations are achieved by choosing different preamble symbol in time domain, which reduces computational complexity. For fine tinting synchronization, a method of averaging over two peak values is proposed to improve timing precision, which reduces disadvantages of frequency offset and channel decline. Theoretical analysis and simulation results demonstrate that the proposed joint synchronization method can provide accurate synchronization and appropriate complexity, thus that method is an optimization method of joint synchronization for IEEE 802.16 OFDM systems.
引用
收藏
页码：34 / 38
页数：5
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