CDF-Based Multiuser Scheduling for Downlink Non-Orthogonal Multiple Access (NOMA)
Type
ArticleKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2020Permanent link to this record
http://hdl.handle.net/10754/664442
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In this paper, we propose cumulative distribution function (CDF)-based multiuser scheduling (CMS) for downlink non-orthogonal multiple access (NOMA) to accommodate a massive number of IoT devices over limited radio resources and statistically analyze the ergodic capacity of devices. With the proposed CMS algorithm, multiple devices having relatively better channel gain to exploit multiuser diversity are selected while meeting QoS requirements by controlling the amount of resources. We first provide the user selection probability in terms of the weight of each device, which determines the amount of time resources. Based on some selected results, it is shown that equal weights ensure fair resource allocation. Further, for fair resource allocation scenario, the distribution of signal-to-interference-plus-noise ratio (SINR) when a specific device is selected is derived. With this derived statistical result of SINR, we analyze the ergodic capacity of the specific device. Some selected results show that the proposed CMS algorithm allocates the time resource more fairly than proportional fair scheduling. Further, the average throughput and amount of resources can be controlled by adjusting the weights of each device, so different QoS requirements can be guaranteed.Citation
Lim, B., Nam, S. S., Ko, Y.-C., & Alouini, M.-S. (2020). CDF-Based Multiuser Scheduling for Downlink Non-Orthogonal Multiple Access (NOMA). IEEE Access, 8, 140533–140545. doi:10.1109/access.2020.3012114Publisher
IEEEJournal
IEEE AccessAdditional Links
https://ieeexplore.ieee.org/document/9149912/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9149912
ae974a485f413a2113503eed53cd6c53
10.1109/ACCESS.2020.3012114
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