Power allocation and user clustering in multicast NOMA based satellite communication systems
Visualitza/Obre
10.1109/ICC40277.2020.9149308
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/336084
Tipus de documentText en actes de congrés
Data publicació2020
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés obert
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Abstract
This paper investigates the application of multicast non-orthogonal multiple access (MC-NOMA) schemes to the forward link of a satellite communication system. In multicast transmission each frame contains information of multiple users. To benefit from the theory developed in NOMA, the proposed scheme creates two groups of users within each beam. The analysis conducted in this work reveals that the user grouping has an impact on the performance. In the light of this observation, power allocation and user clustering techniques have been derived to either maximize the sum-rate or achieve max-min fairness. The numerical simulation results show that MC-NOMA outperforms multicast orthogonal multiple access (MC-OMA) schemes, where different groups are served in orthogonal resources. Moreover, the gain of MC-NOMA over the MC-OMA becomes more prominent as number of users per group and the transmit power increases. The results show the minimum-rate and the sum-rate of MC-NOMA can be increased by a factor 2 and 1.45 with respect to MC-OMA, respectively.
CitacióIvari, S. [et al.]. Power allocation and user clustering in multicast NOMA based satellite communication systems. A: IEEE International Conference on Communications. "2020 IEEE International Conference on Communications: Dublin, Ireland 7-11 June 2020: proceedings". Institute of Electrical and Electronics Engineers (IEEE), 2020, p. 1-6. ISBN 978-1-7281-5089-5. DOI 10.1109/ICC40277.2020.9149308.
ISBN978-1-7281-5089-5
Versió de l'editorhttps://ieeexplore.ieee.org/document/9149308
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