Joint beam-hopping scheduling and power allocation in NOMA-assisted satellite systems
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10.1109/WCNC49053.2021.9417306
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/354167
Tipus de documentText en actes de congrés
Data publicació2021
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés obert
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Abstract
In this paper, we investigate potential synergies of non-orthogonal multiple access (NOMA) and beam hopping (BH) for multi-beam satellite systems. The coexistence of BH and NOMA provides time-power-domain flexibilities in mitigating a practical mismatch effect between offered capacity and requested traffic per beam. We formulate the joint BH scheduling and NOMA-based power allocation problem as mixed-integer non-convex programming. We reveal the exponential-conic structure for the original problem, and reformulate the problem to the format of mixed-integer conic programming (MICP), where the optimum can be obtained by exponential-complexity algorithms. A greedy scheme is proposed to solve the problem on a timeslot-by-timeslot basis with polynomial-time complexity. Numerical results show the effectiveness of the proposed efficient suboptimal algorithm in reducing the matching error by 62.57% in average over the OMA scheme and achieving a good trade-off between computational complexity and performance compared to the optimal solution.
CitacióWang, A. [et al.]. Joint beam-hopping scheduling and power allocation in NOMA-assisted satellite systems. A: IEEE Wireless Communications and Networking Conference. "2021 IEEE Wireless Communications and Networking Conference (WCNC)". Institute of Electrical and Electronics Engineers (IEEE), 2021, p. 1-6. ISBN 978-1-7281-9505-6. DOI 10.1109/WCNC49053.2021.9417306.
ISBN978-1-7281-9505-6
Versió de l'editorhttps://ieeexplore.ieee.org/document/9417306
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