physical layer security, two-way communication, feed back, one-time-pad, random secret key, secrecy rate region
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.
Tsinghua University Press
Tao Li, Shidong Zhou. Achievable Secrecy Rate Region of Two-Way Communication with Secret Key Feedback. Tsinghua Science and Technology 2018, 23(2): 126-134.