Power and Bandwidth Minimization for Demand-Aware GEO Satellite Systems

Smart radio resource allocation combined with the
recent advances of digital payloads will allow to control the
transmit power and bandwidth of the satellites depending on
the demand and the channel conditions of users. The system
flexibility is important not only to handle divergent demand requirements but also to efficiently utilize the limited and expensive
satellite resources. In this paper, we propose a demand-aware
smart radio resource allocation technique, where the transmit
power and the bandwidth of the GEO satellite are minimized
while satisfying the user demand. The formulated optimization
problem is non-convex mixed-integer nonlinear program which is
difficult to solve. Hence, we apply a quadratic transform to solve
the problem iteratively. The numerical results showed that the
proposed scheme outperforms the benchmark schemes in terms
of bandwidth utilization while accurately providing capacity-ondemand.