Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems
Power consumption is a major limitation in the downlink of multibeam satellite systems, since it has a significant impact on the mass and lifetime of the satellite. In this context, we study a new energy-aware power allocation problem that aims to jointly minimize the unmet system capacity (USC) and...
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| Veröffentlicht in: | IEEE wireless communications letters 2020-02, Vol.9 (2), p.228-231 |
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| creator | Efrem, Christos N. Panagopoulos, Athanasios D. |
| description | Power consumption is a major limitation in the downlink of multibeam satellite systems, since it has a significant impact on the mass and lifetime of the satellite. In this context, we study a new energy-aware power allocation problem that aims to jointly minimize the unmet system capacity (USC) and total radiated power by means of multi-objective optimization. First, we transform the original nonconvex-nondifferentiable problem into an equivalent nonconvex-differentiable form by introducing auxiliary variables. Subsequently, we design a successive convex approximation (SCA) algorithm in order to attain a stationary point with reasonable complexity. Due to its fast convergence, this algorithm is suitable for dynamic resource allocation in emerging on-board processing technologies. In addition, we formally prove a new result about the complexity of the SCA method, in the general case, that complements the existing literature where the complexity of this method is only numerically analyzed. |
| doi_str_mv | 10.1109/LWC.2019.2949277 |
| format | Article |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Algorithms Complexity complexity analysis Complexity theory Energy conservation Energy management Heuristic algorithms multi-objective optimization Multiple objective analysis Optimization Power consumption Power demand Resource allocation Resource management Satellite antennas Satellite communications Satellites successive convex approximation unmet system capacity |
| title | Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems |
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