Secrecy Throughput Analysis for Time-Switching SWIPT Networks with Full-Duplex Jamming

Xuanxuan TANG  Wendong YANG  Yueming CAI  Weiwei YANG  Yuyang ZHANG  Xiaoli SUN  Yufeng QIAN  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E101-A   No.7   pp.1136-1140
Publication Date: 2018/07/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E101.A.1136
Type of Manuscript: LETTER
Category: Reliability, Maintainability and Safety Analysis
Keyword: 
energy harvesting,  full-duplex,  SWIPT,  jamming,  passive eavesdropping,  

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Summary: 
This paper studies the secrecy throughput performance of the three-node wireless-powered networks and proposes two secure transmission schemes, namely the half-duplex maximal ratio combining (HD&MRC) scheme and the full-duplex jamming scheme based on time switching simultaneous wireless information and power transfer (FDJ&TS-SWIPT). The closed-form expressions of the secrecy throughput are derived, and intuitive comparison of the two schemes is provided. It is illustrated that the HD&MRC scheme only applies to the low and medium signal-to-noise ratio (SNR) regime. On the contrary, the suitable SNR regime of the FDJ&TS-SWIPT is much wider. It is depicted that FDJ&TS-SWIPT combing with current passive self-interference cancellation (SIC) algorithm outperforms HD&MRC significantly, especially when a medium or high transmit SNR is provided. Numerical simulations are conducted for verifying the validity of the analysis.