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

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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.

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      Affiliations
      ∙ Tao Li is with the 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. E-mail: litao09@ 123456tsinghua.org.cn .
      ∙ Shidong Zhou is with the Department of Electronic Engineering and State Key Laboratory on Microwave and Digital Communications, Tsinghua University, Beijing 100084, China.
      Author notes
      * To whom correspondence should be addressed. E-mail: zhousd@ 123456tsinghua.edu.cn .

      Shidong Zhou received the BS and MS degrees in wireless communications from Southeast University, Nanjing, China, in 1991 and 1994, respectively, and the PhD degree in communication and information systems from Tsinghua University, Beijing, China, in 1998. From 1999 to 2001, he was in charge of several projects in the China 3G Mobile Communication R&D Project. He is currently a professor at Tsinghua University. His research interests are wireless and mobile communications.

      Tao Li received the BS and MS degrees in communication engineering from PLA University of Science and Technology, Nanjing, China, in 2003 and 2008, respectively, and is currently pursuing the PhD degree with the Department of Electronic Engineering, Tsinghua University.�His research interests are signal processing and wireless communications.

      Journal
      TST
      Tsinghua Science and Technology
      Tsinghua University Press (Xueyan Building, Tsinghua University, Beijing 100084, China )
      1007-0214
      05 April 2018
      : 23
      : 2
      : 126-134 (pp. )
      10.26599/TST.2018.9010058
      1007-0214-23-2-126
      Categories
      Regular Article

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