Analysis of auxiliary antenna array effect on performance of wideband noncooperative interference cancellation

doi:10.23919/JSEE.2025.000007

Journal of Systems Engineering and Electronics ›› 2025, Vol. 36 ›› Issue (5): 1188-1201.doi: 10.23919/JSEE.2025.000007

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles

Analysis of auxiliary antenna array effect on performance of wideband noncooperative interference cancellation

Zheyu LI(), Yaxing LI(), Ze WANG(), Jiaqi LIANG(), Fangmin HE(), Jin MENG()

National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, Wuhan 430000, China

Received:2024-03-13 Accepted:2024-12-18 Online:2025-10-18 Published:2025-10-24
Contact: Yaxing LI E-mail:lzyewe@163.com;whhit173@hotmail.com;D22180818@nue.edu.cn;ljq709058593@163.com;hefangminemc@126.com;mengjinemc@163.com
About author:
LI Zheyu was born in 1996. She received her B.S. degree and M.S. degree in 2018 and 2020, respectively from Engineering University of People’s Armed Police in communication engineering. And she is pursuing her Ph.D. degree in electrical engineering in Naval University of Engineering. Her research interests are adaptive interference cancellation and antennas and propagation. E-mail: lzyewe@163.com

LI Yaxing received his B.S. degree in communication engineering from Harbin Institute of Technology, Harbin, China, in 2011, and Ph.D. degree from Hanyang University, South Korea, in 2017. He is currently an assistant engineer in Naval University of Engineering. His current research interests include machine learning, signal processing, electromagnetic compatibility, and adaptive interference cancellation. E-mail: whhit173@hotmail.com

WANG Ze was born in 1997. He received his B.S. degree in automation from Beijing Institute of Technology University, Beijing, China, in 2019, and M.S. degree in instrumentation and science and technology from National University of Defense Technology, Changsha, China, in 2022. He is currently pursuing his Ph.D. degree in electrical engineering at Naval Engineering University, Wuhan, China. His current research interest is the communication anti-interference. E-mail: D22180818@nue.edu.cn

LIANG Jiaqi was born in 1997. He received his B.S. degree in electronic information science and technology from Central South University, Changsha, China, in 2020, and M.S. degree in information and communication engineering from Wuhan Naval Engineering University, Wuhan, China, in 2023. He is pursuing his Ph.D. degree in electrical engineering at Naval Engineering University, Wuhan, China. His current research interests are communication anti-interference and integrated sensing and communication. E-mail: ljq709058593@163.com

HE Fangmin was born in 1982. He received his B.S. degree in communication engineering, M.S. degree in electromagnetic field and microwave technology and Ph.D. degree in communication and information systems from Huazhong University of Science and Technology, Wuhan, China, in 2004, 2007, and 2010, respectively. In 2010, he joined the National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, as a lecturer. Since 2019, he has been a professor in electrical engineering in Naval University of Engineering. His current research interests include electromagnetic compatibility and adaptive interference cancellation. E-mail: hefangminemc@126.com

MENG Jin was born in 1977. He received his B.S. degree from Chongqing College of Communication, Chongqing, China, in 1999, and M.S. and Ph.D. degrees from Naval University of Engineering, Wuhan, China, in 2002 and 2006, respectively, in electrical engineering. In 2006, he joined the National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, as a lecturer, and since 2011, he has been a professor in electrical engineering. From October 2011 to September 2012, he was a visiting scholar with George Green Institute for Electromagnetic Research, University of Nottingham. Since 2017, he has been with the Specialized Electrical Research Institute of Science and Technology, Naval University of Engineering, where he is currently the head of the Electro-Magnetic Compatibility team. His research interests include electromagnetic compatibility both in power conversions and communications, developing models for radiated and conducted electro-magnetic interference (EMI) characteristics and prediction, and novel EMI reduction techniques. E-mail: mengjinemc@163.com
Supported by:
This work was supported by the National Fund for Distinguished Young Scholars (52025072), the National Natural Science Foundation of China (52177012), and the Foundation of National Key Laboratory of Science and Technology (614221722051301).

Abstract

Abstract:

In wideband noncooperative interference cancellation, the reference signals obtained through auxiliary antennas are weighted to cancel with the interference signal. The correlation between the reference signal and the interference signal determines interference cancellation performance, while the auxiliary antenna array affects the correlation by influencing the amplitude and phase of the reference signals. This paper analyzes the effect of auxiliary antenna array on multiple performances of wideband noncooperative interference cancellation. Firstly, the array received signal model of wideband interference is established, and the weight vector coupled with the auxiliary antennas array manifold is solved by spectral analysis and eigen-subspace decomposition. Then, multiple performances which include cancellation resolution, grating null, wideband interference cancellation ratio (ICR), and convergence rate are quantitatively characterized with the auxiliary antenna array. It is obtained through analysis that the performances mutually restrict the auxiliary antenna array. Higher cancellation resolution requires larger array aperture, but when the number of auxiliary antennas is fixed, larger array aperture results in more grating nulls. When the auxiliary antennas are closer to the main antenna, the wideband ICR is improved, but the convergence rate is reduced. The conclusions are verified through simulation of one-dimensional uniform array and two-dimensional nonuniform array. The experiments of three arrays are compared, and the results conform well with simulation and support the theoretical analysis.

Key words: auxiliary antenna array, noncooperative interference cancellation, wideband interference, performance analysis

Zheyu LI, Yaxing LI, Ze WANG, Jiaqi LIANG, Fangmin HE, Jin MENG. Analysis of auxiliary antenna array effect on performance of wideband noncooperative interference cancellation[J]. Journal of Systems Engineering and Electronics, 2025, 36(5): 1188-1201.

Figures/Tables 22

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Simulated parameter	Value
Sampling rate/MHz	1000
Gain of main/ auxiliary antennas/dB	1/1
Wideband interference signal	White noise
Bandwidth/MHz	30
Carrier frequency of interference signal/MHz	115
Input interference to noise ratio (INR)/dB	40

Incidence angle of desired signal/(°)	Array 1/dB (simulated/ measured)	Array 2/dB (simulated/ measured)	Array 3/dB (simulated/ measured)
60	−20/−20	−20/−20	−20/−20
65	−8/−9	−20/−20	−10/−11
69	0/−1	−14/−16	−4/−3
73	4/4	−8/−7	0/0
81	5/4	0/−1	4/3
90	−14/−12	4/5	1/1

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Analysis of auxiliary antenna array effect on performance of wideband noncooperative interference cancellation

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