User Scheduling and Power Allocation for Precoded Multi-Beam High Throughput Satellite Systems With Individual Quality of Service Constraints

For extensive coverage areas, multi-beam high throughput satellite (HTS) communication is a promising technology that plays crucial role in delivering broadband services to many users with diverse Quality of Service (QoS) requirements. This article focuses on HTS systems where all beams reuse the same spectrum. In particular, we propose novel user scheduling and power allocation design capable providing guarantees terms individual QoS requirements while maximizing system under limited budget. Precoding employed forward link mitigate mutual interference among multiple-access scenarios over different coherence time intervals. The combinatorial optimization structure from requires an extremely cost obtain global optimum even when reduced number fit into slot. Therefore, heuristic algorithm yielding good trade-off between performance computational complexity, applicable static operation framework geostationary (GEO) networks. Although signomial programming, non-convex standard form, solution can be lower bounded by geometric program hidden convex structure. A local joint problem consequently obtained successive approach. Numerical results demonstrate effectiveness our algorithms GEO networks better satisfaction combined outstanding overall throughput.