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Joint Power Allocation and Power Splitting for MISO-RSMA Cognitive Radio Systems With SWIPT and Information Decoder Users

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Alternative Title
Joint Power Allocation and Power Splitting for MISO-RSMA Cognitive Radio Systems With SWIPT and Information Decoder Users
Abstract
In this article, we investigate the rate-splitting multiple access (RSMA) framework in a multiuser multiple-input single-output (MISO) underlay cognitive radio system with power-splitting secondary users and information secondary users by using simultaneous wireless information and power transfer. The RSMA framework is a novel multiple access method based on linearly precoded rate splitting at the secondary base station, and successive interference cancellation at the secondary receivers, which has shown better performance compared with the traditional space-division multiple access (SDMA) method. In particular, the objective is to minimize the transmit power at the secondary base station subject to the constraints of minimum energy harvesting, minimum data rate, and a maximum power level for allowable interference with the primary users. The challenging problem under consideration is nonconvex, and the solution relies on dividing it into outer and inner optimization problems. Then, we propose a particle-swarm-optimization-based algorithm to solve the outer problem, with the inner problem managed by the semidefinite relaxation method. In addition, we present a comparative scheme based on the successive convex approximation method and a scheme based on SDMA. Finally, simulation results confirm the superior performance of the proposed approach in comparison with the other schemes.
Author(s)
가르시아 모레타 카를라 에스테구인수카마나 아코스타 마리오 로드리
Issued Date
2021
Type
Article
Keyword
AlgorithmsApproximationCognitive radioCognitive radio (CR) systemEnergy harvestingInterferenceMaximum powerMISO (control systems)MISO communicationMultiaccess communicationMultiple accessNOMAOptimizationparticle swarm optimization (PSO)Power transferrate splitting (RS)ReceiversRelaxation method (mathematics)semidefinite relaxation (SDR)Silicon carbidesimultaneous wireless information and power transfer(SWIPT)Splitting
DOI
10.1109/JSYST.2020.3032725
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9063
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_proquest_journals_2608554602&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Joint%20Power%20Allocation%20and%20Power%20Splitting%20for%20MISO-RSMA%20Cognitive%20Radio%20Systems%20With%20SWIPT%20and%20Information%20Decoder%20Users&offset=0&pcAvailability=true
Publisher
IEEE Systems Journal
Location
미국
Language
영어
ISSN
1932-8184
Citation Volume
15
Citation Number
4
Citation Start Page
5289
Citation End Page
5300
Appears in Collections:
Engineering > IT Convergence
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