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Technology of Network & Communication
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1486-1489

Parameter blind estimation based on cyclic autocorrelation of NC-OFDM signals

Wang Sheng
Zhang Tianqi
Yuan Shuai
Chongqing Key Laboratory of Signal & Information Processing, Chongqing University of Posts & Telecommunications, Chongqing 400065, China

Abstract

In the cognitive radio(CR) environment, the problem of insufficient frequency resources gets severe, however non-continuous orthogonal frequency division multiplexing(NC-OFDM) can work in the non-continuous spectral environment. This paper proposed cyclic autocorrelation method to deal with the important problem of parameter estimation of NC-OFDM signals. Firstly, it analyzed the characteristics of cyclostationary of signals. Then according to the cyclic autocorrelation of the NC-OFDM signal, it estimated the parameters with the characteristics of the discrete spectral lines in the cyclic frequency α and the time delay τ cutaway. Finally, this paper simulated the cyclic autocorrelation of the NC-OFDM signals. The simulation results show that the parameters of NC-OFDM signal can be effectively estimated and recognized zero-prefix orthogonal frequency division multiplexing signals(ZP-OFDM) at low signal-to-noise ratio, and the experiments show that close to 90% of the number of subcarriers, can achieve NC-OFDM signals parameter blind estimation.

Foundation Support

国家自然科学基金资助项目(61671095,61371164,61702065,61701067,61771085)
信号与信息处理重庆市市级重点实验室建设项目(CSTC2009CA2003)
重庆市研究生科研创新项目(CYS17219)
重庆市教育委员会科研项目(KJ1600427,KJ1600429)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2017.11.0749
Publish at: Application Research of Computers Printed Article, Vol. 36, 2019 No. 5
Section: Technology of Network & Communication
Pages: 1486-1489
Serial Number: 1001-3695(2019)05-043-1486-04

Publish History

[2019-05-05] Printed Article

Cite This Article

王胜, 张天骐, 袁帅. 基于循环自相关的NC-OFDM信号参数的盲估计 [J]. 计算机应用研究, 2019, 36 (5): 1486-1489. (Wang Sheng, Zhang Tianqi, Yuan Shuai. Parameter blind estimation based on cyclic autocorrelation of NC-OFDM signals [J]. Application Research of Computers, 2019, 36 (5): 1486-1489. )

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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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