Research Paper#Satellite Communication, MIMO, Beamforming, Precoding🔬 ResearchAnalyzed: Jan 3, 2026 20:18
Multi-Satellite Beamspace MIMO for Enhanced Data Streams
Published:Dec 26, 2025 11:51
•1 min read
•ArXiv
Analysis
This paper introduces a novel approach to multi-satellite communication, leveraging beamspace MIMO to improve data stream delivery to user terminals. The key innovation lies in the formulation of a signal model for this specific scenario and the development of optimization techniques for satellite clustering, beam selection, and precoding. The paper addresses practical challenges like synchronization errors and proposes both iterative and closed-form precoder designs to balance performance and complexity. The research is significant because it explores a distributed MIMO system using satellites, potentially offering improved coverage and capacity compared to traditional single-satellite systems. The focus on beamspace transmission, which combines earth-moving beamforming with beam-domain precoding, is also noteworthy.
Key Takeaways
- •Introduces a novel signal model for Multi-Satellite Multi-Stream (MSMS) beamspace MIMO transmission.
- •Proposes sCSI-based optimization for satellite clustering, beam selection, and precoding.
- •Develops both iterative and closed-form precoder designs to balance performance and complexity.
- •Demonstrates the potential for improved coverage and capacity in satellite communication systems.
Reference
“The paper proposes statistical channel state information (sCSI)-based optimization of satellite clustering, beam selection, and transmit precoding, using a sum-rate upper-bound approximation.”