Energy-Efficient Precoding and Feeder-Link-Beam Matching Design for Bent-Pipe SATCOM Systems
arxiv(2023)
摘要
This paper proposes a joint optimization framework for energy-efficient
linear precoding and feeder-link-beam matching design in a multi-gateway
multi-beam bent-pipe satellite communication system. The proposed scheme
jointly optimizes the precoding vectors at the gateway antennas and
amplifying-and-matching mechanism at the satellite to maximize the
system-weighted energy efficiency under the transmit power budget constraint.
The technical designs are formulated into a non-convex sparsity problem
consisting of a fractional-form objective function and sparsity-related
constraints. To address these challenges, two iterative efficient designs are
proposed by utilizing the concepts of Dinkelbach's method and the
compressed-sensing approach. The simulation results demonstrate the
effectiveness of the proposed scheme compared to another benchmark method.
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