On Secure NOMA Systems With Transmit Antenna Selection Schemes | Zendy

Hongjiang Lei | Zendy; Jianming Zhang | Zendy; Ki-Hong Park | Zendy; Peng Xu | Zendy; Imran Shafique Ansari | Zendy; Gaofeng Pan | Zendy; Basel Alomair | Zendy; Mohamed-Slim Alouini | Zendy

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On Secure NOMA Systems With Transmit Antenna Selection Schemes

Author(s) -

Hongjiang Lei,

Jianming Zhang,

Ki-Hong Park,

Peng Xu,

Imran Shafique Ansari,

Gaofeng Pan,

Basel Alomair,

Mohamed-Slim Alouini

Publication year - 2017

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2017.2737330

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

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.

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