Advanced RF switching and on‐board regeneration technologies for digital satellite communications

Abstract

In this paper, functional blocks of a generic on-board processing payload are identified, and some key technology implementation issues for on-board RF andlor baseband switching, signal regeneration and processing are addressed. The design and performance characteristics of a microwave switch matrix and a 120 Mb/s coherent quadrature phase shift keying demodulator for satellite applications are presented. This hardware is realized with monolithic microwave integration technology. Significant performance improvement and reduction in size and weight, as well as enhanced subsystem reliability, have been demonstrated, making these technologies attractive for flexible communications satellite payload architectures of the future. Transmission analysis is performed to quantify link budget advantages that could be obtained by using on-board regeneration. KEY WORDS On-board regeneration On-board processing Satellite switching SS-TDMA Baseband switching

Síntesis de planes de transmisión estáticos y dinámicos mediante técnicas de cristalización (simulated annealing)

“…La optimización de la capacidad de conexión a bordo en relación a la demanda de tráfico para cada uno de los haces de recepción y transmisión, es un aspecto técnico que está siendo ampliamente estudiado. Su optimización supone la disn-iinución del número de conexiones para ofrecer el mismo tráfico y aumentar el tiempo total de transmisión útil, esto es, aumentar la capacidad y eficiencia ("throughput") de la red [68][69][70][71][72][73][74].…”