On Secure NOMA Systems With Transmit Antenna Selection Schemes

被引：127

作者：

Lei, Hongjiang ^{[1
,2
]}

Zhang, Jianming ^{[1
]}

Park, Ki-Hong ^{[2
]}

Xu, Peng ^{[1
]}

Ansari, Imran Shafique ^{[3
]}

Pan, Gaofeng ^{[4
]}

Alomair, Basel ^{[5
]}

Alouini, Mohamed-Slim ^{[2
]}

机构：

[1] Chongqing Univ Posts & Telecommun, Chongqing Key Lab Mobile Commun Technol, Chongqing 400065, Peoples R China

[2] King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[3] Texas A&M Univ Qatar, Dept Elect & Comp Engn, Doha 23874, Qatar

[4] Univ Lancaster, Sch Comp & Commun, Lancaster LA1 4WA, England

[5] King Abdulaziz City Sci & Technol, Natl Ctr Cybersecur Technol, Riyadh 11442, Saudi Arabia

来源：

IEEE ACCESS | 2017年 / 5卷

基金：

中国国家自然科学基金;

关键词：

Non-orthogonal multiple access; physical layer security; transmit antenna selection; secrecy outage probability; NONORTHOGONAL MULTIPLE-ACCESS; 5G SYSTEMS;

D O I：

10.1109/ACCESS.2017.2737330

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper investigates the secrecy performance of a two-user downlink non-orthogonal multiple access systems. Both single-input and single-output and multiple-input and single-output systems with different transmit antenna selection (TAS) strategies are considered. Depending on whether the base station has the global channel state information of both the main and wiretap channels, the exact closed-form expressions for the secrecy outage probability (SOP) with suboptimal antenna selection and optimal antenna selection schemes are obtained and compared with the traditional space-time transmission scheme. To obtain further insights, the asymptotic analysis of the SOP in high average channel power gains regime is presented and it is found that the secrecy diversity order for all the TAS schemes with fixed power allocation is zero. Furthermore, an effective power allocation scheme is proposed to obtain the non-zero diversity order with all the TAS schemes. Monte Carlo simulations are performed to verify the proposed analytical results.

引用

页码：17450 / 17464

页数：15

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