Proceedings ArticleDOI
A Flexible Resource Allocation Algorithm in Full Bandwidth Beam Hopping Satellite Systems
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TLDR
To increase system capacity in the full bandwidth beam hopping satellite systems, a resource allocation algorithm based on spatial clustering is proposed, which increases the system capacity by 25.1%, and the total interference power of the system is far less than the noise power, which meets the interference control requirements.Abstract:
To increase system capacity in the full bandwidth beam hopping satellite systems, a resource allocation algorithm based on spatial clustering is proposed. According to the proportion of the required capacity to the available resources, the algorithm allocates corresponding amount of timeslots to each beam, increasing the system capacity on the premise of satisfying relative fairness. A distance threshold is calculated that when the distance between beams is greater than the threshold, the influence of interference on signal quality can be ignored. Thus, controlling the distance between beams illuminated simultaneously to be greater than the threshold can avoid the interference. Numerical results show that compared with the traditional multibeam system, this algorithm increases the system capacity by 25.1%, and the total interference power of the system is far less than the noise power, which meets the interference control requirements.read more
Citations
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Journal ArticleDOI
Optimization Method of Dynamic Beam Position for LEO Beam-Hopping Satellite Communication Systems
TL;DR: In this article, an optimization method of dynamic beam position division for low earth orbit (LEO) satellite communication systems is proposed to shorten the packet queueing delay, and the performance evaluation of the proposed optimization method is carried out in real-time.
Journal ArticleDOI
Dynamic Beam Scheduling of Multibeam Low Earth Orbit Satellites Based on an Enhanced Artificial Bee Colony Algorithm
TL;DR: In this paper , an enhanced artificial bee colony algorithm was proposed to solve the catastrophic problem of a large solution space in the resource scheduling model and to improve the convergence of the algorithm, which can ensure the fairness of resource allocation and the effectiveness of service completion.
Journal ArticleDOI
Dynamic Beam Scheduling of Multibeam Low Earth Orbit Satellites Based on an Enhanced Artificial Bee Colony Algorithm
TL;DR: In this paper , an enhanced artificial bee colony algorithm was proposed to solve the catastrophic problem of a large solution space in the resource scheduling model and to improve the convergence of the algorithm, which can ensure the fairness of resource allocation and the effectiveness of service completion.
Proceedings ArticleDOI
Flexible Resource Allocation for Differentiated QoS Provisioning in Beam-Hopping Satellite Communications System
TL;DR: In this paper , the authors proposed a maximal user service weight gain (maxUSWG) resource allocation algorithm in beam hopping satellite communication system, which is determined by the current traffic demand and delay sensitivity of the cell.
Proceedings ArticleDOI
Flexible Resource Allocation for Differentiated QoS Provisioning in Beam-Hopping Satellite Communications System
Zhenguo Wu,Pinyi Ren,Dongyang Xu +2 more
TL;DR: The proposed maximal user service weight gain (maxUSWG) resource allocation algorithm can effectively improve the QoS, increase the system throughput and improve the resource utilization.
References
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Journal ArticleDOI
Generic Optimization of Linear Precoding in Multibeam Satellite Systems
TL;DR: A generic optimization framework for linear precoding design to handle any objective functions of data rate with general linear and nonlinear power constraints is provided and an iterative algorithm which optimizes the precoding vectors and power allocation alternatingly is proposed and most importantly, the proposed algorithm is proved to always converge.
Journal ArticleDOI
Cognitive beamhopping for spectral coexistence of multibeam satellites
TL;DR: In this article, a cognitive beam-hopping satellite system is proposed assuming that the secondary gateway is aware of the primary's beamhopping pattern, and the proposed system significantly enhances the spectral efficiency (SE) in comparison to other systems.
Proceedings ArticleDOI
Beam Hopping in Multi-Beam Broadband Satellite Systems: System Performance and Payload Architecture Analysis
TL;DR: The forward link of a multibeam transparent satellite system for providing broadband Internet access to users sparse over the coverage area is analyzed and efficient ways to implement beam hopping combining payload flexibility with affordable complexity are investigated.
Proceedings ArticleDOI
System capacity optimization in time and frequency for multibeam multi-media satellite systems
X. Alberti,J. M. Cebrian,A. Del Bianco,Zoltán Katona,J. Lei,Maria Angeles Vázquez-Castro,A. Zanus,L. Gilbert,Nader Alagha +8 more
TL;DR: In this article, the Flexible and Beam-Hoping (BH) scheme is proposed for multibeam system transmission, focusing on the forward link, and an iterative algorithm that always converges given the constraints posed by the payload is proposed.
Journal ArticleDOI
On the downlink throughput of a broadband LEO satellite network with hopping beams
A. Mokhtar,M. Azizoglu +1 more
TL;DR: Upper and lower bounds on the downlink throughput as a function of the number of spot beams, the interference constraints, and the coverage area are presented.