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AuthorPei, Xinyue
AuthorYu, Hua
AuthorWen, Miaowen
AuthorMumtaz, Shahid
AuthorAl Otaibi, Sattam
AuthorGuizani, Mohsen
Available date2022-11-15T09:04:59Z
Publication Date2020-11-01
Publication NameIEEE Transactions on Communications
Identifierhttp://dx.doi.org/10.1109/TCOMM.2020.3017002
CitationPei, X., Yu, H., Wen, M., Mumtaz, S., Al Otaibi, S., & Guizani, M. (2020). NOMA-based coordinated direct and relay transmission with a half-duplex/full-duplex relay. IEEE Transactions on Communications, 68(11), 6750-6760.‏
ISSN00906778
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85096710607&origin=inward
URIhttp://hdl.handle.net/10576/36411
AbstractIn this article, we propose a downlink non-orthogonal multiple access (NOMA) based coordinated direct and relay system with one cell-center user and multiple cell-edge users, where a decode-and-forward (DF) relay bridges the connection between the base station and the cell-edge users. Both full-duplex (FD) and half-duplex (HD) protocols are considered for the relay. We assume that the performance of the cell-edge users is subjected to the relay, and the cancellation of the mutual interference between the relay and cell-center user is imperfect. Both the exact analytical expression of outage probability and an approximate expression of the ergodic sum rate at high signal-to-noise ratio (SNR) are derived. Numerical results demonstrate that: 1) the FD relaying NOMA system outperforms the HD relaying NOMA system at low SNR, but the situation is exactly the opposite at high SNR; 2) the mutual interference can cause a larger performance gap than the self-interference at the relay; 3) the power allocation coefficients for the cell-center user and relay can affect the performance more significantly than those for cell-edge users.11This article was presented in part at the IEEE International Workshop on Signal Processing Advances in Wireless Communications 2019 [1].
SponsorThis work was supported in part by the National Natural Science Foundation of China under Grant 61871190, U1809211, and 61771202, in part by the Natural Science Foundation of Guangdong Province under Grant 2018B030306005, in part by the Pearl River Nova Program of Guangzhou under Grant 201806010171
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
Subjectdecode-and-forward
ergodic sum rate
full-duplex
Non-orthogonal multiple access
outage probability
TitleNOMA-Based Coordinated Direct and Relay Transmission with a Half-Duplex/ Full-Duplex Relay
TypeArticle
Pagination6750-6760
Issue Number11
Volume Number68
dc.accessType Abstract Only


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