Khanh D. Pham
Much of his recent work nowadays has been 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 Satcom is currently missing. As the number of spot beams increases, the spectral resources associated with the feeder links of the gateways are required to increase proportionally. The present investigation explores a potential solution for on-board beam precoding, which is expected to lead to a significant reduction in the requirement of feeder link bandwidth. Relative to the interest of minimizing inter-gateway communication overheads, the advantage of uncooperative gateways is sought in the development of on-ground multi-gateway precoding. This research also has significant impacts to the Air Force missions and DoD. Unlocking commercial and allied access to keep up with demand increases for higher throughput and information superiority has been a major barrier to future US Space Force operations. Thus, there is a need for design principles and operational guidelines that promote much needed science and technology investments on hybrid ground and space beamforming architectures and processes for next generation multi-gateway multi-beam Satcom systems.