Unpublished conference/Abstract (Scientific congresses, symposiums and conference proceedings)
Joint Beam-Hopping Scheduling and Power Allocation in NOMA-Assisted Satellite Systems
Wang, Anyue; Lei, Lei; Lagunas, Eva et al.
20212021 IEEE Wireless Communications and Networking Conference (WCNC)
 

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Keywords :
NOMA; beam hopping; multi-beam satellite systems; resource allocation; mixed-integer conic programming
Abstract :
[en] 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 nonconvex programming. We reveal the xponential-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.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Wang, Anyue ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Lei, Lei ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Lagunas, Eva  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Perez-Neira, Ana I.;  Centre Tecnologic de Telecomunicacions de Catalunya (CTTC/CERCA), Castelldefels, Spain ; Universitat Politecnica de Catalunya (UPC),Barcelona, Spain > Signal Theory and Communication department
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
yes
Language :
English
Title :
Joint Beam-Hopping Scheduling and Power Allocation in NOMA-Assisted Satellite Systems
Publication date :
31 March 2021
Event name :
2021 IEEE Wireless Communications and Networking Conference (WCNC)
Event place :
Nanjing, China
Event date :
29-3-2021 to 1-4-2021
Audience :
International
FnR Project :
FNR11632107 - Resource Optimization For Integrated Satellite-5g Networks With Non-orthogonal Multiple Access, 2017 (01/09/2018-31/08/2021) - Lei Lei
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since 29 April 2021

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