Multi-Satellite Beamspace MIMO for Enhanced Data Streams

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.