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dc.contributor.authorObeed, Mohanad
dc.contributor.authorDahrouj, Hayssam
dc.contributor.authorSalhab, Anas M.
dc.contributor.authorZummo, Salam A.
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2020-11-15T11:49:15Z
dc.date.available2020-11-15T11:49:15Z
dc.date.issued2020
dc.identifier.citationObeed, M., Dahrouj, H., Salhab, A. M., Zummo, S. A., & Alouini, M.-S. (2020). User Pairing, Link Selection and Power Allocation for Cooperative NOMA Hybrid VLC/RF Systems. IEEE Transactions on Wireless Communications, 1–1. doi:10.1109/twc.2020.3036444
dc.identifier.issn1558-2248
dc.identifier.doi10.1109/TWC.2020.3036444
dc.identifier.urihttp://hdl.handle.net/10754/665946
dc.description.abstractDespite the promising high-data rate features of visible light communications (VLC), they still suffer from unbalanced services due to blockages and channel fluctuation among users. This paper introduces and evaluates a new transmission scheme which adopts cooperative non-orthogonal multiple access (Co-NOMA) in hybrid VLC/radio-frequency (RF) systems, so as to improve both system sum-rate and fairness. Consider a network consisting of one VLC access point (AP) and multiple strong and weak users, where each weak user is paired with a strong user. Each weak user can be served either directly by the VLC AP, or via the strong user which converts light information received through the VLC link, and forwards the information to the weak user via the RF link. The paper then maximizes a network-wide weighted sum-rate, so as to jointly determine the strong-weak user-pairs, the serving link of each weak user (i.e., either direct VLC or hybrid VLC/RF), and the power of each user message, subject to user connectivity and transmit power constraints. The paper tackles such a mixed-integer non-convex optimization problem using an iterative approach. Simulations show that the proposed scheme significantly improves the VLC network performance (i.e., sum-rate and fairness) as compared to the conventional NOMA scheme.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/9259258/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9259258
dc.rights(c) 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectVisible light communication
dc.subjectnon-orthogonal multiple-access
dc.subjectcooperative NOMA
dc.subjectenergy harvesting
dc.subjectpower allocation
dc.subjectweighted sum-rate
dc.titleUser Pairing, Link Selection and Power Allocation for Cooperative NOMA Hybrid VLC/RF Systems
dc.typeArticle
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalIEEE Transactions on Wireless Communications
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Engineering, University of British Columbia, Kelowna V1Y 1V7, BC, Canada.
dc.contributor.institutionDepartment of Electrical Engineering, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia.
dc.identifier.pages1-1
kaust.personDahrouj, Hayssam
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2020-11-16T10:16:13Z


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