Non-data aided joint estimation of symbol timing offset and carrier frequency offset for OFDM/OQAM systems

被引：10
|
作者：
Liu, Mingqian [1 ]
Wang, Ju
Li, Bingbing
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Shaanxi, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2018年 / 87卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
OFDM/OQAM; Synchronization; Parameter estimation; non-data aided; CRB; CHANNEL ESTIMATION; BLIND ESTIMATION; DESIGN;
D O I：
10.1016/j.aeue.2018.02.021
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper deals with the problem of blind synchronization for orthogonal frequency division multiplexing based on offset quadrature amplitude (OFDM/OQAM) systems without the prior information of the channel response and transmitting signals power. A novel non-data aided (NDA) joint estimation method of symbol timing offset (STO) and carrier frequency offset (CFO) for OFDM/OQAM is conceived in multipath fading channels condition. The multipath fading channels are equivalent to multiple parallel sub-channels with flat Rayleigh fading characteristics firstly, and then STO and CFO are estimated by the second-order cyclic-cumulant with different cycle frequency values and time delay values. Moreover, the modified Cramer-Rao Bound (MCRB) of NDA joint STO and CFO estimation is presented. The simulation results demonstrate that the proposed method is effective and feasible over frequency selective fading channels.
引用
收藏
页码：164 / 172
页数：9
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