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Secrecy Rate Optimizations for MIMO Communication Radar
journal contribution
posted on 2019-08-20, 11:29 authored by Anastasios Deligiannis, Abdullahi Daniyan, Sangarapillai Lambotharan, Jonathon A. ChambersIn this paper, we investigate transmit beampattern optimization techniques for a multiple-input multiple-output radar in the presence of a legitimate communications receiver and an eavesdropping target. The primary objectives of the radar are to satisfy a certain target-detection criterion and to simultaneously communicate safely with a legitimate receiver by maximizing the secrecy rate against the eavesdropping target. Therefore, we consider three optimization problems, namely target return signal-to-interference-plus-noise ratio maximization, secrecy rate maximization, and transmit power minimization. However, these problems are nonconvex due to the nonconcavity of the secrecy rate function, which appears in all three optimizations either as the objective function or as a constraint. To solve this issue, we use Taylor series approximation of the nonconvex elements through an iterative algorithm, which recasts the problem as a convex problem. Two transmit covariance matrices are designed to detect the target and convey the information safely to the communication receiver. Simulation results are presented to validate the efficiency of the aforementioned optimizations.
Funding
This work was supported in part by the Engineering and Physical Sciences Research Council under Grant EP/K014307/1 and in part by the MOD University Defence Research Collaboration in Signal Processing.
History
Citation
IEEE Transactions on Aerospace and Electronic Systems, 2018, 54 (5), pp. 2481-2492Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of EngineeringVersion
- VoR (Version of Record)
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IEEE Transactions on Aerospace and Electronic SystemsPublisher
Institute of Electrical and Electronics Engineers (IEEE) for Aerospace and Electronic Systems Societyissn
0018-9251eissn
1557-9603Acceptance date
2018-02-26Copyright date
2018Available date
2019-08-20Publisher DOI
Publisher version
https://ieeexplore.ieee.org/document/8327462Language
enAdministrator link
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