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arXiv · 1912.00920

Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems

Christos N. Efrem·Athanasios D. Panagopoulos
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Abstract

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.

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Christos N. Efrem, Athanasios D. Panagopoulos. 2019-12-02. Dynamic Energy-Efficient Power Allocation in Multibeam Satellite Systems. https://doi.org/10.1109/lwc.2019.2949277

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