基于循环相关熵谱的时频混叠信号载波频率估计方法

doi:10.11959/j.issn.1000-436x.2018091

Journal on Communications ›› 2018, Vol. 39 ›› Issue (6): 20-26.doi: 10.11959/j.issn.1000-436x.2018091

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Carrier frequency estimation method of time-frequency overlapped signals based on cyclic correntropy spectrum

Tianshuang QIU¹(),Xing CHEN¹,Jitong MA¹,Jingchun LI²,Rong LI²

¹ Faculty of EIEE,Dalian University of Technology,Dalian 116024,China
² The State Radio Monitoring Center,Beijing 100037,China

Revised:2018-04-19 Online:2018-06-01 Published:2018-07-09
Supported by:
The National Natural Science Foundation of China(61671105);The National Natural Science Foundation of China(61172108);The National Natural Science Foundation of China(61139001)

Abstract

Abstract:

According to the performance degradation problem of the carrier frequency estimation method of time-frequency overlapped BPSK signals in Alpha-stable distribution noise,a novel carrier frequency estimation algorithm of the time-frequency overlapped BPSK signals based on the cyclic correntropy spectrum was proposed.The relationship between cyclic frequency and carrier frequency on the zero frequency section of the cyclic correntropy spectrum was deduced,which could be utilized for carrier frequency estimation.The proposed method can suppress the impulse noise and has better estimation performance than that of the contrastive methods.Simulation results are presented to demonstrate the effectiveness and robustness of the proposed method.

Key words: Alpha-stable distribution, cyclic correntropy, time-frequency overlapped, carrier frequency estimation

CLC Number:

TN911.7

Tianshuang QIU,Xing CHEN,Jitong MA,Jingchun LI,Rong LI. Carrier frequency estimation method of time-frequency overlapped signals based on cyclic correntropy spectrum[J]. Journal on Communications, 2018, 39(6): 20-26.

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References 14

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