Secrecy Rate-Optimum Energy Splitting for an Untrusted and Energy Harvesting Relay Network | Zendy

Rugui Yao | Zendy; Yanan Lu | Zendy; Theodoros A. Tsiftsis | Zendy; Nan Qi | Zendy; Tamer Mekkawy | Zendy; Fei Xu | Zendy

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Secrecy Rate-Optimum Energy Splitting for an Untrusted and Energy Harvesting Relay Network

Author(s) -

Rugui Yao,

Yanan Lu,

Theodoros A. Tsiftsis,

Nan Qi,

Tamer Mekkawy,

Fei Xu

Publication year - 2018

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.2018.2819639

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

In this paper, a destination-assisted-jamming-based secure transmission is devised for an untrusted and energy harvesting relay network. In the proposed scheme, both source and destination split their energies into two parts for energy harvesting at the relay and transmissions of confidential and cooperative jamming signals, respectively. We formulate an optimization problem to maximize the achievable secrecy rate by jointly optimizing the energy splitting for the source and destination. The existence of the solution for the optimization is carefully analyzed. Due to high complexity of the joint optimization, an iterative optimization algorithm to obtain the near-optimal energy splitting policy is proposed. The numerical results validate that the optimized energy splitting policy leads to a higher achievable secrecy rate, and the iterative algorithm has a quick convergence rate.

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