Resource Allocation and Cluster Formation for Imperfect NOMA in DL/UL Decoupled HetNets
Radaydeh, Redha Mahmoud Mesleh
Al-Qahtani, Fawaz S.
El-Malek, Ahmed H.Abd
KAUST DepartmentCommunication Theory Lab
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Online Publication Date2018-01-25
Print Publication Date2017-12
Permanent link to this recordhttp://hdl.handle.net/10754/623244
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AbstractBeing capable of serving multiple users with the same radio resource, non-orthogonal multiple access (NOMA) can provide desirable performance enhancements in a fair and spectral efficient manner. In this paper, we investigate the resource allocation (RA) and cluster formation (CF) aspects of NOMA for downlink (DL) uplink (UL) decoupled (DUDe) heterogeneous networks (HetNets). A non-ideal NOMA scheme is considered with power disparity and sensitivity constraints (PDSCs), delay tolerance, and residual interference after cancellation. Taking the PDSCs into account, we analytically show that using the DL decoding order limits UL-NOMA performance by that of OMA, while employing an inverse order result in a performance gain that is mainly determined by the channel gain disparity of users. Thereafter, a generic CF method is proposed for any type of user graph, which iteratively forms clusters using Blossom algorithm. Finally, highly non-convex RA problem is converted into a convex form by employing geometric programming (GP) where power and bandwidth are optimized to maximize network sumrate and max-min fairness objectives.
CitationCelik A, Radaydeh RM, Al-Qahtani FS, El-Malek AHA, Alouini M-S (2017) Resource Allocation and Cluster Formation for Imperfect NOMA in DL/UL Decoupled HetNets. 2017 IEEE Globecom Workshops (GC Wkshps). Available: http://dx.doi.org/10.1109/GLOCOMW.2017.8269139.
Conference/Event name2017 IEEE Global Telecommunications Conference, GC 2017