The Next Generation of Beam Hopping Satellite Systems: Dynamic Beam Illumination With Selective Precoding

Beam Hopping (BH) is a popular technique considered for next-generation multi-beam satellite communication system which allows a satellite focusing its resources on where they are needed by selectively illuminating beams. While beam illumination plan can be adjusted according to its needs, the main...

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Published in:IEEE transactions on wireless communications Vol. 22; no. 4; pp. 2666 - 2682
Main Authors: Chen, Lin, Ha, Vu Nguyen, Lagunas, Eva, Wu, Linlong, Chatzinotas, Symeon, Ottersten, Bjorn
Format: Journal Article
Language:English
Published: New York IEEE 01.04.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
binary quadratic programming
Communications systems
Demand
Dynamic beam illumination
Greedy algorithms
High-temperature superconductors
Illumination
Interference
Lighting
Mathematical models
Optimization
Payloads
Penalty function
Precoding
Quadratic programming
Satellite broadcasting
Satellite communications
Satellites
selective precoding
user scheduling
ISSN:1536-1276, 1558-2248
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Abstract Beam Hopping (BH) is a popular technique considered for next-generation multi-beam satellite communication system which allows a satellite focusing its resources on where they are needed by selectively illuminating beams. While beam illumination plan can be adjusted according to its needs, the main limitation of convectional BH is the adjacent beam avoidance requirement needed to maintain acceptable levels of interference. With the recent maturity of precoding technique, a natural way forward is to consider a dynamic beam illumination scheme with selective precoding, where large areas with high-demand can be covered by multiple active precoded beams. In this paper, we mathematically model such beam illumination design problem employing an interference-based penalty function whose goal is to avoid precoding whenever possible subject to beam demand satisfaction constraints. The problem can be written as a binary quadratic programming (BQP). Next, two convexification frameworks are considered namely: (i) A Semi-Definition Programming (SDP) approach particularly targeting BQP type of problems, and (ii) Multiplier Penalty and Majorization-Minimization (MPMM) based method which guarantees to converge to a local optimum. Finally, a greedy algorithm is proposed to alleviate complexity with minimal impact on the final performance. Supporting results based on numerical simulations show that the proposed schemes outperform the relevant benchmarks in terms of demand matching performance while minimizing the use of precoding.
AbstractList Beam Hopping (BH) is a popular technique considered for next-generation multi-beam satellite communication system which allows a satellite focusing its resources on where they are needed by selectively illuminating beams. While beam illumination plan can be adjusted according to its needs, the main limitation of convectional BH is the adjacent beam avoidance requirement needed to maintain acceptable levels of interference. With the recent maturity of precoding technique, a natural way forward is to consider a dynamic beam illumination scheme with selective precoding, where large areas with high-demand can be covered by multiple active precoded beams. In this paper, we mathematically model such beam illumination design problem employing an interference-based penalty function whose goal is to avoid precoding whenever possible subject to beam demand satisfaction constraints. The problem can be written as a binary quadratic programming (BQP). Next, two convexification frameworks are considered namely: (i) A Semi-Definition Programming (SDP) approach particularly targeting BQP type of problems, and (ii) Multiplier Penalty and Majorization-Minimization (MPMM) based method which guarantees to converge to a local optimum. Finally, a greedy algorithm is proposed to alleviate complexity with minimal impact on the final performance. Supporting results based on numerical simulations show that the proposed schemes outperform the relevant benchmarks in terms of demand matching performance while minimizing the use of precoding.
Author Lagunas, Eva
Wu, Linlong
Ha, Vu Nguyen
Ottersten, Bjorn
Chen, Lin
Chatzinotas, Symeon
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Snippet Beam Hopping (BH) is a popular technique considered for next-generation multi-beam satellite communication system which allows a satellite focusing its...
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SubjectTerms binary quadratic programming
Communications systems
Demand
Dynamic beam illumination
Greedy algorithms
High-temperature superconductors
Illumination
Interference
Lighting
Mathematical models
Optimization
Payloads
Penalty function
Precoding
Quadratic programming
Satellite broadcasting
Satellite communications
Satellites
selective precoding
user scheduling
Title The Next Generation of Beam Hopping Satellite Systems: Dynamic Beam Illumination With Selective Precoding
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