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Directional modulation with distributed receiver selection for secure wireless communications
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DOI：10.1007/s11432-020-3048-9.png)
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In this paper, a novel directional modulation with distributed receiver selection (DM-DRS) scheme is proposed for secure wireless communications. In DM-DRS, a particular subset of receivers is activated and part of the information bits are modulated by the index of the activation pattern, in addition to traditional digital modulation. Especially, the scrambling matrix is introduced for the sake of preventing the eavesdropping. Moreover, the performances of bit error rate (BER) in terms of the union bound for both the legitimate user and eavesdropper are respectively derived in the context of an optimal joint maximum likelihood (ML) detector, and the theoretical BER upper bounds are demonstrated to be tight by the numerical results. In the context of the discrete-input and continuous-output system, the ergodic secrecy rates of the legitimate user and the eavesdropper are obtained, the secrecy rate is also quantified. Furthermore, our numerical results exhibit that DM-DRS can achieve an increased transmission rate compared to its traditional directional modulation with cooperative receivers (DM-CR) and spatial and direction modulation (SDM) counterparts, while guaranteeing an improved BER performance.
Keyword:
directional modulation
distributed receiver selection
bit error rate
secrecy rate
期刊
IF:
7.6
论文数:
4.9K
被引数:
8.9K
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