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Secrecy Performance Analysis in Downlink NOMA Systems with Cooperative Full-duplex Relaying
UESTC, NCL, Chengdu, Sichuan, Peoples R China..
UESTC, NCL, Chengdu, Sichuan, Peoples R China..
KTH, School of Electrical Engineering and Computer Science (EECS), Information Science and Engineering.ORCID iD: 0000-0002-5407-0835
UESTC, NCL, Chengdu, Sichuan, Peoples R China..
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2018 (English)In: 2018 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS), IEEE, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We introduce the cooperative full-duplex relaying to a downlink non-orthogonal multiple access (NOMA) system and analyze the secrecy performance of each NOMA user. In particular, we enable the near NOMA user, which is close to a base station (BS), to act as a full-duplex relay for the far NOMA user, which is far away from the BS. By taking imperfect self-interference cancellation into consideration, we analytically derive the secrecy outage probabilities of both NOMA users with integral expressions. To reduce the computational complexity of both secrecy outage probabilities, we adopt approximation techniques and obtain approximated secrecy outage probabilities with closed-form expressions. Simulation results validate the correctness of our analysis and reveal that suppressing the self-interference at the full-duplex relay can enhance the secrecy performance of NOMA users. Meanwhile, simulation results demonstrate the advantages of the cooperative full-duplex relaying in the NOMA system over the OMA system.

Place, publisher, year, edition, pages
IEEE, 2018.
Series
IEEE International Conference on Communications Workshops, ISSN 2164-7038
Keywords [en]
Cooperative relaying, full-duplex, NOMA, secrecy outage probability
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-237176DOI: 10.1109/ICCW.2018.8403764ISI: 000445022200276Scopus ID: 2-s2.0-85050271712ISBN: 978-1-5386-4328-0 (print)OAI: oai:DiVA.org:kth-237176DiVA, id: diva2:1258195
Conference
IEEE International Conference on Communications (ICC), MAY 20-24, 2018, Kansas City, MO
Note

QC 20181024

Available from: 2018-10-24 Created: 2018-10-24 Last updated: 2018-10-30Bibliographically approved

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Xiao, Ming

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