2017/03/27 by Md Shipon Ali, Ekram Hossain, Ali, Md Shipon +4
Computer Science · Engineering · #Advanced Wireless Communication Technologies #FOS: Computer and information sciences #Networking and Internet Architecture (cs.NI) #Optical Wireless Communication Technologies #Satellite Communication Systems #UAV Applications and Optimization #cs.NI
paper · pdf · doi:10.48550/arxiv.1703.09255
arxiv created 2017/03/27 · openalex publication_date 2017/03/27 · arxiv updated 2017/03/29 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
We outline a general framework to use coordinated multi-point (CoMP) transmission technology in downlink multi-cell non-orthogonal multiple access (NOMA) systems considering distributed power allocation at each cell. In this framework, CoMP transmission is used for users experiencing strong receive-signals from multiple cells while each cell adopts NOMA for resource allocation to its active users. After a brief review of the working principles of different CoMP schemes, we identify their applicability and necessary conditions for their use in downlink multi-cell NOMA system. After that, we discuss different network scenarios with different spatial distributions of users and study the applicability of CoMP schemes in these network scenarios. To the end, a numerical performance evaluation is carried out for the proposed CoMP-NOMA systems and the results are compared with those for conventional orthogonal multiple access (OMA)-based CoMP systems. The numerical results quantify the spectral efficiency gain of the proposed CoMP-NOMA models over CoMP-OMA. Finally, we conclude this article by identifying the potential major challenges in implementing CoMP-NOMA in future cellular systems.