放大转发中继网络中绿色的物理层安全通信技术

doi:10.11999/JEIT150695

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Abstract

In this paper, a green communication scheme based on physical layer security is addressed considering the energy and secrecy constraints. This scheme maximizes the secure Energy Efficiency (EE) of the network by power allocation subject to the maximum power constraint of each node and the target secrecy rate constraint of the network. Furthermore, an iterative algorithm for power allocation is developed based on fractional programming, dual decomposition, and Difference of Convex functions (DC) programming. It is verified by simulations that the proposed algorithm can lead to a significant gain of secure EE yet with some loss of secrecy rate compared with secrecy rate maximization. This is because that there is an inherent tradeoff between EE and secrecy. However, the achievable secrecy rate of the proposed scheme is still superior over that of total transmission power minimization.

Key words： Information security Energy efficiency Physical-layer security Power allocation Amplify-and-forward relaying

Received: 08 June 2015 Published: 26 February 2016

PACS:

TN918.91

Fund:

The Open Project Foundation of CEMEE State Key Laboratory (CEMEE2015K0204B)

Corresponding Authors: BAI Bo E-mail: eebobai@tsinghua.edu.cn

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	WANG Dong
	LI Yongcheng
	BAI Bo
	WANG Manxi

Cite this article:

WANG Dong,LI Yongcheng,BAI Bo等. Green Communications Based on Physical-layer Security for Amplify-and-forward Relay Networks[J]. JEIT, 2016, 38(4): 841-847.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150695 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I4/841

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