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| Citation: | YANG Jing, YU Xianxiang, SHA Minghui, et al. Dual function radar and communication signal matrix design method for MIMO system[J]. Journal of Radars, 2023, 12(2): 262–274. doi: 10.12000/JR22087
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Dual Function Radar and Communication Signal Matrix Design Method for MIMO System
DOI: 10.12000/JR22087
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Abstract
Due to several advantages of the Multi-Input Multi-Output (MIMO) system in terms of waveform, space diversity, and multiplexing, the MIMO Dual Function Radar and Communication (DFRC) system, which is responsible for target detection and securing the communication by sharing the software and hardware resources, has attracted great attention. This paper addresses the MIMO DFRC system based on permutation matrix modulation and proposes a DFRC signal matrix design method based on the Alternation Direction Method of Multipliers (ADMM). By maximizing the Peak Mainlobe to Sidelobe level Ratio (PMSR) of the beampattern with the constraints of the reference codebook for both users and eavesdroppers, the system guarantees excellent detection performance along with protecting the communication information from interception. Aiming at the communication demodulation of the permutation matrix, a permutation learning demodulation method based on the Alternating Direction Penalty Method (ADPM) is proposed to improve the demodulation efficiency of the co-use waveform. Numerical simulations verify the effectiveness of the proposed methods to achieve dual function, capable of realizing multiuser communication and deriving higher PMSR compared with the existing counterparts. -
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References
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- Figure 1. The framework diagram of the MIMO DFRC system based on permutation matrix modulation
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Figure 2. The transmit beampattern with
$\theta _1^{{\text{com}}} = - {60^\circ }$ - Figure 3. Communication constellation diagram
- Figure 4. SER versus SNR for different algorithms
- Figure 5. SER versus angle
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Figure 6. The element distributions of
${\boldsymbol{s}}\left( {{{65}^\circ }} \right)$ ${\boldsymbol{s}}\left( { - {{60}^\circ }} \right)$ - Figure 7. The computational complexities of Alg. 1 and Alg. 2
- Figure 8. DFRC performance
- Figure 9. SER versus SNR