Joint Hybrid Beamforming and User Scheduling for Multi-Satellite Cooperative Networks
Xuan Zhang, Shu Sun, Meixia Tao, Qin Huang, Xiaohu Tang

TL;DR
This paper introduces a joint hybrid beamforming and user scheduling scheme for multi-satellite cooperative networks, significantly enhancing spectral efficiency by optimizing satellite-user connections and beamforming strategies.
Contribution
It proposes a novel joint hybrid beamforming and user scheduling method tailored for multi-satellite networks, addressing resource limitations and improving network performance.
Findings
Achieves 47.2% spectral efficiency improvement over non-joint methods.
Demonstrates effectiveness of the proposed scheme through simulations.
Highlights key factors influencing multi-satellite network performance.
Abstract
In this paper, we consider a cooperative communication network where multiple satellites provide services for ground users (GUs) (at the same time and on the same frequency). The communication and computational resources on satellites are usually restricted and the satellite-GU link determination affects the communication performance significantly when multiple satellites provide services for multiple GUs in a collaborative manner. Therefore, considering the limitation of the on-board radio-frequency chains, we first propose a hybrid beamforming method consisting of analog beamforming for beam alignment and digital beamforming for interference mitigation. Then, to establish appropriate connections between satellites and GUs, we propose a heuristic user scheduling algorithm which determines the connections according to the total spectral efficiency (SE) increment of the multi-satellite…
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Taxonomy
TopicsSatellite Communication Systems · Advanced MIMO Systems Optimization · Cooperative Communication and Network Coding
