Reference : Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/10993/51104
Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems
English
Wang, Anyue mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Lei, Lei mailto [Xi'an Jiaotong University > School of Information and Communications Engineering]
Lagunas, Eva mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Pérez-Neira, Ana I. mailto []
Chatzinotas, Symeon mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
5-May-2022
IEEE Transactions on Wireless Communications
Institute of Electrical and Electronics Engineers
Yes
1536-1276
1558-2248
New York
NY
[en] multi-beam satellite systems ; beam hopping ; NOMA ; resource optimization
[en] Next-generation satellite systems require more flexibility in resource management such that available radio resources can be dynamically allocated to meet time-varying and non-uniform traffic demands. Considering potential benefits of beam hopping (BH) and non-orthogonal multiple access (NOMA), we exploit the time-domain flexibility in multi-beam satellite systems by optimizing BH design, and enhance the power-domain flexibility via NOMA. In this paper, we investigate the synergy and mutual influence of beam hopping and NOMA. We jointly optimize power allocation, beam scheduling, and terminal-timeslot assignment to minimize the gap between requested traffic demand and offered capacity. In the solution development, we formally prove the NP-hardness of the optimization problem. Next, we develop a bounding scheme to tightly gauge the global optimum and propose a suboptimal algorithm to enable efficient resource assignment. Numerical results demonstrate the benefits of combining NOMA and BH, and validate the superiority of the proposed BH-NOMA schemes over benchmarks.
http://hdl.handle.net/10993/51104
FnR ; FNR11632107 > Lei Lei > ROSETTA > Resource Optimization For Integrated Satellite-5g Networks With Non-orthogonal Multiple Access > 01/09/2018 > 31/08/2021 > 2017

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