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Open Access

Achievable Secrecy Rate Region of Two-Way Communication with Secret Key Feedback

Department of Electronic Engineering, State Key Laboratory on Microwave and Digital Communications, and National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China.
Department of Electronic Engineering and State Key Laboratory on Microwave and Digital Communications, Tsinghua University, Beijing 100084, China.
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Abstract

This paper investigates the achievable secrecy rate region of the Gaussian two-way wiretap channel, which describes the simultaneous secure two-way transmission of a confidential message. Through adjusting the time-sharing factor and the rate at which the random secret key is fed back, the allocation and optimization for the secrecy rates of two-way communication are achieved. Under peak and average power constraints, the achievable secrecy rate regions of the two-way communication are derived respectively.

Keywords

physical layer securitytwo-way communicationfeed backone-time-padrandom secret keysecrecy rate region

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Tsinghua Science and Technology
Volume 23 Issue 2,
April 2018
Pages 126-134
DOI: 10.26599/TST.2018.9010058

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Cite this article:
Li T, Zhou S. Achievable Secrecy Rate Region of Two-Way Communication with Secret Key Feedback. Tsinghua Science and Technology, 2018, 23(2): 126-134. https://doi.org/10.26599/TST.2018.9010058

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Received: 15 November 2016
Revised: 07 December 2016
Accepted: 12 December 2016
Published: 02 April 2018
© The author(s) 2018