聯(lián)合發(fā)端天線選擇和收端人工噪聲的物理層安全傳輸方法

張亞軍; 梁濤; 柳永祥; 孫愛偉

doi:10.11999/JEIT141580

聯(lián)合發(fā)端天線選擇和收端人工噪聲的物理層安全傳輸方法

doi: 10.11999/JEIT141580

1.
(中國人民解放軍理工大學(xué)通信工程學(xué)院南京 210007) ②(南京電訊技術(shù)研究所南京 210007)

基金項(xiàng)目:

國家自然科學(xué)基金(61471392)

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出版歷程
- 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: 該文在同頻全雙工技術(shù)快速發(fā)展的背景下，針對物理層安全研究中波束成形技術(shù)的高復(fù)雜度和發(fā)端天線選擇(TAS)技術(shù)的低性能，提出一種聯(lián)合發(fā)端天線選擇和收端人工噪聲(AN)的物理層安全傳輸方法TAS-rAN。首先，有多根天線的發(fā)端，利用天線選擇技術(shù)，選取能使合法接收方接收信噪比最大的天線發(fā)送保密消息；其次，有同頻全雙工能力的收端，在接收到消息的同時，發(fā)送人工噪聲來擾亂竊聽方對保密消息的竊聽。在Nakagami-m信道下，推導(dǎo)了安全中斷概率的閉合表達(dá)式，并基于此，得到非零安全容量的概率表達(dá)式；通過漸進(jìn)安全中斷概率的推導(dǎo)，得到TAS-rAN方法的安全分集度。仿真結(jié)果表明，與已有的TAS-single和TAS-Alamouti方法相比，TAS-rAN安全方法具有較強(qiáng)的穩(wěn)定性，且能提供更優(yōu)的安全性能。
- 物理層安全 /
- 發(fā)射端天線選擇 /
- 人工噪聲 /
- 同頻全雙工 /
- 安全中斷概率
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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