Reference : Joint Beam-Hopping Scheduling and Power Allocation in NOMA-Assisted Satellite Systems

	Document type :	Scientific congresses, symposiums and conference proceedings : Unpublished conference
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/46943

Title :	Joint Beam-Hopping Scheduling and Power Allocation in NOMA-Assisted Satellite Systems
Language :	English
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) > >]
Publication date :	31-Mar-2021
Peer reviewed :	Yes
Audience :	International
Event name :	2021 IEEE Wireless Communications and Networking Conference (WCNC)
Event date :	29-3-2021 to 1-4-2021
Event place (city) :	Nanjing
Event country :	China
Keywords :	[en] 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.
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/10993/46943
FnR project :	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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