Energy-efficient Alternating Iterative Secure Structure of Maximizing Secrecy Rate for Directional Modulation Networks

Energy-efficient Alternating Iterative Secure Structure of Maximizing Secrecy Rate for Directional Modulation Networks
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定向调制网络保密率最大化的节能交替迭代安全结构

DOI:
10.1016/j.phycom.2019.100949
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发表时间:
2019-07
期刊:
Physical Communications
影响因子:
--
通讯作者:
Feng Shu
Feng Shu
中科院分区:
其他
文献类型:
--
作者:
Linlin Sun;Jiayu Li;Yu Zhang;Yuntian Wang;Linqing Gui;Fanyuan Li;Haocheng Li;Zhihong Zhuang;Feng Shu

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在定向调制(DM)网络中,安全性和隐私性问题已经扮演了越来越重要的角色。由于保密消息和人工噪声的功率分配将对系统性能产生建设性影响,因此联合考虑波束形成向量和功率分配(PA)因子之间的关系是很重要的。为了最大化保密率(SR),提出了波束形成和PA之间的交替迭代结构(AIS)。只需两三次迭代,它就可以快速收敛到其速率上限。仿真结果表明,在中、大信噪比(SNR)区域,特别是当DM发射端的天线数较少时,所提出的AIS的SR性能明显优于基于零空间投影(NSP)的PA策略。
In a directional modulation (DM) network, the issues of security and privacy have taken on an increasingly important role. Since the power allocation of confidential message and artificial noise will make a constructive effect on the system performance, it is important to jointly consider the relationship between the beamforming vectors and the power allocation (PA) factors. To maximize the secrecy rate (SR), an alternating iterative structure (AIS) between the beamforming and PA is proposed. With only two or three iterations, it can rapidly converge to its rate ceil. Simulation results indicate that the SR performance of proposed AIS is much better than the null-space projection (NSP) based PA strategy in the medium and large signal-to-noise ratio (SNR) regions, especially when the number of antennas at the DM transmitter is small.
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