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Feedback Coding Schemes for the Broadcast Channel With Mutual Secrecy Requirement at the Receivers
Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China..ORCID iD: 0000-0002-7893-6218
Chengdu Text Coll, Sch Econ & Management, Chengdu 611731, Sichuan, Peoples R China..
South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China..
KTH, School of Electrical Engineering and Computer Science (EECS), Information Science and Engineering. Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China..
2019 (English)In: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 67, no 9, p. 6039-6052Article in journal (Refereed) Published
Abstract [en]

The broadcast channel with mutual secrecy requirement at the receivers (BC-MSR-R) is a basic model characterizing the physical layer security (PLS) in the down-link of the wireless communication systems, where one transmitter sends two independent messages to two receivers via a broadcast channel, and each receiver can successfully decode his/her intended message and wishes to overhear the other one's message. This paper studies how to enhance the already existing secrecy rate region of the BC-MSR-R via receivers' feedback. Specifically, we propose two feedback strategies for the BC-MSR-R, where one uses the feedback to generate pure secret keys protecting the transmitted messages, and the other uses the feedback to generate not only keys but also cooperative messages helping the receivers to improve their decoding performance. Different inner bounds on the secrecy capacity region of the BC-MSR-R with noiseless feedback are constructed according to different feedback strategies, and these bounds are further illustrated by a Dueck-type example.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 67, no 9, p. 6039-6052
Keywords [en]
Broadcast channel, confidential message, feedback, secrecy capacity region
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-261977DOI: 10.1109/TCOMM.2019.2924206ISI: 000487048400010OAI: oai:DiVA.org:kth-261977DiVA, id: diva2:1360546
Note

QC 20191014

Available from: 2019-10-14 Created: 2019-10-14 Last updated: 2019-10-14Bibliographically approved

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Ma, Zheng

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