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Physical Layer Security for Frequency Diverse Array-Based Dual-Hop Spatial Modulation
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DOI：10.1109/TWC.2023.3253214.png)
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摘要
En 中文
In this paper, we design the physical layer security of a dual-hop spatial modulation system provided the relay node transmits its own private information. Meanwhile, the quadrature virtual channel spatial modulation (QVCSM) is proposed to enhance the physical layer security in the second hop. To achieve system security in both angle and range dimensions, the frequency diverse array (FDA) is used in the relay node with a decode-and-forward (DF) protocol. Moreover, the baseband directional modulation (DM) and artificial noise (AN) are jointly utilized to suppress the received signal at the passive eavesdropper. Additionally, the Ergodic secrecy rate of the proposed system is analyzed, whereas the closed-form expressions for tight upper bounds on the bit error rates (BERs) of the source and relay are derived for both the destination and eavesdropper. The simulation results show that the proposed FDA relay design outperforms the traditional phase array (PA) relay system in terms of the system secrecy rate. In contrast to the quadrature spatial modulation (QSM) method, the proposed designs achieve an improved suppression performance of the eavesdropper.
Keyword:
Quadrature virtual channel spatial modulation (QVCSM)
frequency diverse array (FDA)
ergodic secrecy rate
bit error rate
decode-and-forward (DF)
期刊
IF:
10.7
论文数:
1.3W
被引数:
5.3W
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