Efficient Resource Management strategies for MF-TDMA satellite reverse links with Fade Mitigation Techniques

Abstract

This paper addresses the design and evaluation of an efficient resource management strategy with dynamic bandwidth allocation for transmission in the return link of a GEO satellite system with Adaptive Coding and Modulation (ACM) as fade mitigation technique. One possibility for an application in a system similar to DVB-RCS is to assign the Modulation and Coding used for different time-slots in the superframe once at the beginning of transmission and to hold it constant for all subsequent superframes (SF). Dependent on whether all possible ModCods are represented in a SF or only a fraction, policies are defined about which assignment is best in terms of bandwidth efficiency and throughput. Moreover the task of resolving a conflict (in case the capacity within a specific ModCod is insufficient to serve all the requests) has to be investigated. The final paper proposes an architecture which has a very low computational complexity to perform all these tasks. Moreover comparative simulation results on the performance differences of two different conflict resolving strategies are presented.