计算机工程与应用2012，Vol.48Issue(1)：21-23,3.DOI:10.3778/j.issn.1002-8331.2012.01.006
基于星座点特征的OFDM盲定时同步算法
Blind timing synchronization algorithm based on constellation characteristics forOFDM systems
摘要
Abstract
Symbol Timing Offset (STO) estimation is one of the main synchronization operations in Orthogonal Frequency Division Multiplexing (OFDM) systems. To achieve the fine timing synchronization, this paper proposes a blind timing synchronization algorithm based on constellation characteristics for OFDM systems. A new timing metric function is defined via energy criterion in the constellation area, and then the STO estimation is obtained by maximizing the timing metric function. The proposed algorithm is bandwidth efficient, because it doesn't need pilot tones or training symbols. The simulation results show that the performance of proposed algorithm is better than that of the other algorithms in both Additive White Gaussian Noise( AWGN) and multipath fading channels.关键词
正交频分复用/定时/盲同步/星座点Key words
Orthogonal Frequency Division Multiplexing (OFDM)/timing/blind synchronization/constellation分类
信息技术与安全科学引用本文复制引用
赵海龙,张健,周劼..基于星座点特征的OFDM盲定时同步算法[J].计算机工程与应用,2012,48(1):21-23,3.基金项目
国家自然科学基金-中国工程物理研究院联合基金(No.10876103). （No.10876103）
