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Optimal Power Allocations for 5G Non-Orthogonal Multiple Access with Half/Full Duplex Relaying
Southwest Jiaotong Univ, Key Lab Informat Coding & Transmiss, Chengdu 610031, Sichuan, Peoples R China.;Xidian Univ, State Key Lab Integrated Serv Networks, Xian, Shaanxi, Peoples R China..
Southwest Jiaotong Univ, Key Lab Informat Coding & Transmiss, Chengdu 610031, Sichuan, Peoples R China.;Southeast Univ, Natl Mobile Commun Res Lab, Nanjing, Jiangsu, Peoples R China..
Univ Manchester, Sch Elect & Elect Engn, Manchester, Lancs, England..
KTH, School of Electrical Engineering and Computer Science (EECS), Intelligent systems, Information Science and Engineering.ORCID iD: 0000-0002-5407-0835
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2019 (English)In: ICC 2019 - 2019 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), IEEE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Recently, power allocation has attracted more and more attention in order to optimize the performance of nonorthogonal multiple access (NOMA) systems. Different from existing works, the power allocation problems are investigated for cooperative NOMA systems with dedicated amplify-and-forward half-duplex relay (NOMA-HDR) and full-duplex relay (NOMA-FDR). From the fairness standpoint, the power allocation problems are formulated to maximize the minimum achievable user rate in the considered systems. The problems for both NOMA-HDR and NOMA-FDR systems with two-user and M-user are addressed. The closed-form power allocation policy of two-user NOMA-HDR system is obtained. Also, the optimal numerical power allocation policies for two-user NOMA-FDR and M-user NOMA-HDR systems are obtained. In addition, the problem for M-user NOMA-FDR systems is solved in noise-limited environment. Simulation results show that the proposed NOMA-HDR or NOMA-FDR scheme with power adaption clearly outperforms the NOMA-HDR or NOMA-FDR scheme with fixed power allocation. Besides, when the residual self-interference channel gain is small, the performance of NOMA-FDR system is better than the NOMA-HDR system.

Place, publisher, year, edition, pages
IEEE , 2019.
Series
IEEE International Conference on Communications, ISSN 1550-3607
Keywords [en]
5G, NOMA, HDR/FDR, power allocation
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-264169DOI: 10.1109/ICC.2019.8761923ISI: 000492038805048Scopus ID: 2-s2.0-85070207596ISBN: 978-1-5386-8088-9 (print)OAI: oai:DiVA.org:kth-264169DiVA, id: diva2:1374176
Conference
IEEE International Conference on Communications (ICC), MAY 20-24, 2019, Shanghai, PEOPLES R CHINA
Note

QC 20191129

Available from: 2019-11-29 Created: 2019-11-29 Last updated: 2019-11-29Bibliographically approved

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Xiao, MingMa, Zheng

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