Cooperative NOMA system with virtual full duplex user relaying
Cooperative non-orthogonal multiple access (NOMA) system employs user relaying to enhance performance. Although full-duplex (FD) user relaying scheme does not incur additional bandwidth for relaying, the imperfect self-interference cancellation degrades the performance significantly. Alternatively,...
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers Inc.
2019
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| Online Access: | http://eprints.utm.my/87688/1/QianYuLiau2019_CooperativeNomaSystemwithVirtualFull.pdf |
| _version_ | 1796864491467571200 |
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| author | Qian, Yu Liau Chee, Yen Leow |
| author_facet | Qian, Yu Liau Chee, Yen Leow |
| author_sort | Qian, Yu Liau |
| collection | ePrints |
| description | Cooperative non-orthogonal multiple access (NOMA) system employs user relaying to enhance performance. Although full-duplex (FD) user relaying scheme does not incur additional bandwidth for relaying, the imperfect self-interference cancellation degrades the performance significantly. Alternatively, a virtual full-duplex (VFD) user relaying scheme can be used. In this paper, we study a cooperative NOMA system in cognitive radio scenario using VFD relaying scheme, where two half-duplex (HD) secondary users take turn to relay message of a primary user with decode-and-forward (DF) strategy. First, we derive the closed-form and asymptotic expressions of the outage probability and ergodic rate of the users. Then, we demonstrate the outage probability, ergodic rate, and ergodic sum rate performance of the proposed scheme using Monte Carlo simulations. We also provide a comprehensive comparison between the proposed VFD user relaying and existing FD and HD user relaying in orthogonal multiple access and NOMA systems. The simulation results verify the analytical results and demonstrate the advantages of the proposed VFD user relaying over existing schemes. |
| first_indexed | 2024-03-05T20:42:40Z |
| format | Article |
| id | utm.eprints-87688 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:42:40Z |
| publishDate | 2019 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | utm.eprints-876882020-11-30T13:08:42Z http://eprints.utm.my/87688/ Cooperative NOMA system with virtual full duplex user relaying Qian, Yu Liau Chee, Yen Leow TK Electrical engineering. Electronics Nuclear engineering Cooperative non-orthogonal multiple access (NOMA) system employs user relaying to enhance performance. Although full-duplex (FD) user relaying scheme does not incur additional bandwidth for relaying, the imperfect self-interference cancellation degrades the performance significantly. Alternatively, a virtual full-duplex (VFD) user relaying scheme can be used. In this paper, we study a cooperative NOMA system in cognitive radio scenario using VFD relaying scheme, where two half-duplex (HD) secondary users take turn to relay message of a primary user with decode-and-forward (DF) strategy. First, we derive the closed-form and asymptotic expressions of the outage probability and ergodic rate of the users. Then, we demonstrate the outage probability, ergodic rate, and ergodic sum rate performance of the proposed scheme using Monte Carlo simulations. We also provide a comprehensive comparison between the proposed VFD user relaying and existing FD and HD user relaying in orthogonal multiple access and NOMA systems. The simulation results verify the analytical results and demonstrate the advantages of the proposed VFD user relaying over existing schemes. Institute of Electrical and Electronics Engineers Inc. 2019-01 Article PeerReviewed application/pdf en http://eprints.utm.my/87688/1/QianYuLiau2019_CooperativeNomaSystemwithVirtualFull.pdf Qian, Yu Liau and Chee, Yen Leow (2019) Cooperative NOMA system with virtual full duplex user relaying. IEEE Access, 7 . pp. 2502-2511. ISSN 2169-3536 http://dx.doi.org/10.1109/ACCESS.2018.2886656 DOI:10.1109/ACCESS.2018.2886656 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Qian, Yu Liau Chee, Yen Leow Cooperative NOMA system with virtual full duplex user relaying |
| title | Cooperative NOMA system with virtual full duplex user relaying |
| title_full | Cooperative NOMA system with virtual full duplex user relaying |
| title_fullStr | Cooperative NOMA system with virtual full duplex user relaying |
| title_full_unstemmed | Cooperative NOMA system with virtual full duplex user relaying |
| title_short | Cooperative NOMA system with virtual full duplex user relaying |
| title_sort | cooperative noma system with virtual full duplex user relaying |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/87688/1/QianYuLiau2019_CooperativeNomaSystemwithVirtualFull.pdf |
| work_keys_str_mv | AT qianyuliau cooperativenomasystemwithvirtualfullduplexuserrelaying AT cheeyenleow cooperativenomasystemwithvirtualfullduplexuserrelaying |