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Impact Factor:4.348
DOI number:10.1109/LWC.2017.2755652
Affiliation of Author(s):School of ComputerScience and Information Engineering, Hefei University of Technology
Journal:IEEE Wireless Communications Letters
Funded by:National Natural Science Foundation of China under Grants 61571178, andt 61372078"
Key Words:Physical-layer security, pseudorandom signal, channel estimation, secrecy capacity
Abstract:This letter proposes a receiver-originated physical-layer secure transmissions scheme (ROST) which consists of two-phase communications. In phase 1, the receiver sends a pseudorandom signal (only known by itself) to the transmitter and in phase 2, the transmitter directly sends out the mixture of its confidential message and the received pseudorandom signal. The receiver could estimate the channel with the help of the pseudorandom signal before cancelling it from the received mixed signal, and finally detect the confidential information. By contrast, the eavesdropper can hardly obtain any confidential information because it cannot estimate the channel without any pilot signal in both phases transmissions and is interfered by the pseudorandom signal. Furthermore, we discuss the secrecy capacity of ROST and show that ROST can always keep the security of the confidential message, achieve much higher secrecy capacity than the traditional scheme, even without any channel information at the transmitter.
Co-author:Xinyue Hu,Jun Gao
First Author:Caihong Kai
Indexed by:Journal paper
Correspondence Author:Shengli Zhang
Discipline:Engineering
Document Type:J
Volume:7
Issue:1
Page Number:86 - 89
ISSN No.:2162-2345
Translation or Not:no
Date of Publication:2017-09-22
Included Journals:SCI、EI