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http://dx.doi.org/10.6109/jkiice.2020.24.12.1632

Fairness-Based Beam Bandwidth Allocation for Multi-Beam Satellite Communication System  

Jung, Dong-Hyun (Satellite Wide-Area Infra. Research Section, ETRI)
Ryu, Joon-Gyu (Satellite Wide-Area Infra. Research Section, ETRI)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.24, no.12, 2020 , pp. 1632-1638 More about this Journal
Abstract
In this paper, we investigate a multi-beam satellite communication system where multiple terminals transmit information signals to the gateway via a satellite. The satellite is equipped with phased array antennas to form multiple spot beams of which bandwidths are not identically allocated. We formulate an optimization problem to maximize fairness of beam bandwidth allocation. In order to solve the problem, we propose two heuristic algorithms; iterative beam bandwidth allocation (IBBA) and request ratio-based beam bandwidth allocation (RRBBA) algorithms. The IBBA algorithm iteratively equalizes the ratio of allocated bandwidth of each beam to their resource request while the RRBBA algorithm allocates beam bandwidth calculated from the ratio. Simulation results show that the IBBA algorithm has close fairness performance to the optimum while the RRBBA algorithm has less performance than the IBBA algorithm at the price of reduced computational complexity.
Keywords
Satellite communication system; Geostationary earth orbit (GEO); Multi-beam satellite; Bandwidth allocation;
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