联合发端天线选择和收端人工噪声的物理层安全传输方法

张亚军; 梁涛; 柳永祥; 孙爱伟

doi:10.11999/JEIT141580

联合发端天线选择和收端人工噪声的物理层安全传输方法

doi: 10.11999/JEIT141580

1.
(中国人民解放军理工大学通信工程学院南京 210007) ②(南京电讯技术研究所南京 210007)

基金项目:

国家自然科学基金(61471392)

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- 文章访问数: 1573
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出版历程
- 收稿日期: 2014-12-10
- 修回日期: 2015-04-30
- 刊出日期: 2015-09-19

Hybrid Transmit Antenna Selection and Full-duplex Artificial-noise-added Receiver Scheme for Physical Layer Security Enhancement

1.
(Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, China)
2.
(Nanjing Telecommunication Technology Institute, Nanjing 210007, China)

摘要

摘要: 该文在同频全双工技术快速发展的背景下，针对物理层安全研究中波束成形技术的高复杂度和发端天线选择(TAS)技术的低性能，提出一种联合发端天线选择和收端人工噪声(AN)的物理层安全传输方法TAS-rAN。首先，有多根天线的发端，利用天线选择技术，选取能使合法接收方接收信噪比最大的天线发送保密消息；其次，有同频全双工能力的收端，在接收到消息的同时，发送人工噪声来扰乱窃听方对保密消息的窃听。在Nakagami-m信道下，推导了安全中断概率的闭合表达式，并基于此，得到非零安全容量的概率表达式；通过渐进安全中断概率的推导，得到TAS-rAN方法的安全分集度。仿真结果表明，与已有的TAS-single和TAS-Alamouti方法相比，TAS-rAN安全方法具有较强的稳定性，且能提供更优的安全性能。
- 物理层安全 /
- 发射端天线选择 /
- 人工噪声 /
- 同频全双工 /
- 安全中断概率
Abstract: With the fast development of full-duplex technology in the same band, a novel hybrid scheme called Transmit Antenna Selection-receivever Artifical Noise (TAS-rAN), is proposed for lower complexity of beam- forming scheme and higher security of TAS in MISO wiretap channels. In this scheme, by using TAS protocol, the transmitter first selects a single antenna that maximizes the instantaneous Signal-to-Noise Ratio (SNR) at the full-duplex receiver. While the transmitter uses this antenna to transmit secrecy data, the full-duplex receiver sends Artificial Noise (AN) to confuse the potential eavesdropper. For the proposed protocol, Nakagami-m fading channels with different parameters for the main channel and the eavesdropper,s channel is considered, and a new closed-form expression for the exact secrecy outage probability is derived. The numerical simulation results demonstrate that the proposed TAS-rAN protocol is a robust secure system, and can offer higher secure performances than both existed single TAS-single and TAS-Alamouti schemes.
- Physical layer security /
- Transmit Antenna Selection (TAS) /
- Artificial Noise (AN) /
- Full-duplex /
- Secrecy outage probability

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参考文献(20)

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