Traditional multibeam geostationary satellite communication systems provide broadband coverage using a regular grid of fixed spot-beams with uniform four-color frequency reuse scheme. However, user distribution is nonuniform on ground and, consequently, the demand distribution varies geographically. One potential solution to address high-demand regions is to enhance the satellite beam gain only in those areas. In this article, we propose the so-called demand driven beam densification approach, which leverages the recent advances in on-board active antenna technologies to generate a higher number of beams over high demand hot-spot areas. Increasing the number of beams result in higher beam overlapping, which needs to be carefully considered within the beam frequency planning. In this context, we propose a combination of beam densification, where the number of beams and beam placement is optimized targeting the demand satisfaction objective, followed by frequency-color coding strategy for efficient spectrum and interference management. Supporting results based on numerical simulations show the benefits of the proposed demand driven beam densification in terms of demand matching performance compared with nondensified schemes and regular densification schemes.
Demand-Driven Beam Densification in Multibeam Satellite Communication Systems
IEEE Transactions on Aerospace and Electronic Systems ; 59 , 5 ; 6534-6554
2023-10-01
9234908 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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Elsevier | 1987
|Satellite multibeam antenna concept
AIAA | 1976
|