Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems

CHEN Jun; WANG Hao; HE Xiaobo; WANG Jie; ZHOU Jianjiang

doi:10.11999/JEIT240342

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CHEN Jun, WANG Hao, HE Xiaobo, WANG Jie, ZHOU Jianjiang. Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT240342

Citation:

CHEN Jun, WANG Hao, HE Xiaobo, WANG Jie, ZHOU Jianjiang. Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT240342

Citation:

CHEN Jun, WANG Hao, HE Xiaobo, WANG Jie, ZHOU Jianjiang. Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT240342

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Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems

doi: 10.11999/JEIT240342

1.
School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Funds: The National Natural Science Foundation of China (62171229), The Natural Science Foundation of Jiangsu Province (BK20190772), The Aeronautical Science Foundation (20200020052005), The Foundation of Key Laboratory of Radar Imaging and Microwave Photon Technology of Ministry of Education (Nanjing University of Aeronautics and Astronautics) (NJ20230002)

Received Date: 2024-04-29
Rev Recd Date: 2024-08-21

Available Online: 2024-08-30

Abstract

Abstract

In modern electronic countermeasures, grouping of multiple joint radar and communication systems can improve the detection efficiency and collaborative detection capability of the single joint radar and communication system. Due to the high peak to average power ratio of the joint radar and communication signal itself, the signal is easy to be intercepted, and the system’s survivability is seriously threatened. In order to improve the Low Probability of Intercept (LPI) performance of the joint radar and communication signal, a time-frequency structure of grouping LPI joint radar and communication signal with communication subcarrier grouping power optimization and radar subcarrier interleaving equal power optimization under the framework of filter bank multicarrier is proposed in this paper. Then, from the perspective of the information theory, the paper unifies the performance assessment metrics of the system; On this basis, minimizing the intercepted information divergence of the interceptor is taken as the optimization objective, and an LPI optimization model of the group network joint radar and communication signal is established. The paper converts this optimization model into a convex optimization problem and solves it using the Karush-Kuhn-Tucker condition. The simulation results show that the radar interference of the network LPI joint radar and communication signal designed in this paper has inter-node radar interference as low as nearly –60 dB when detecting moving targets, and the communication bit error rate satisfies 10^–6 order of magnitude, while the signal-to-noise ratio of the intercepted signal is effectively reduced.
- Low Probability of Intercept(LPI),
- Joint radar and communication,
- Network system,
- Filter Bank Multi-Carrier(FBMC),
- Information theory

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References(17)

References

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