Control Engineering for Hybrid Ground and Space Precoding in Multi-Gateway Multi-Beam Satellite

This paper aims at filling the gap, in which a hierarchical feedback framework to design and synthesize a class of hybrid ground and space precoders for multi-gateway multi-beam satellite communications (SATCOM) is currently missing, by providing modeling, characterization, and engineering of shared resource management and resilient interference mitigation, along with their control-theoretic underpinnings. In particular, distributed hybrid ground and space precoding systems and methods are proposed to define the main functional blocks in multi-gateway multi-beam SATCOM, supported by general multi-time-scale models from the signal-to-interference-plus-noise ratio (SINR) and signal-to-leakage-plus-noise ratio (SLNR) processes. In this framework, the paradigm of Proportional-Integral-Derivative (PID) control is utilized as an on-ground precoding in the feed space for mitigating interferences among beams of different clusters as well as beams of the same cluster, and the dead-beat control methodology as the core for onboard precoding in the beam space to minimize signal leakages on other clusters of users. Finally, in light of the proposed framework with minimal inter-gateway communication overheads, a roadmap is envisioned for the future of multi-gateway multi-beam SATCOM as a discipline.