Improved dynamic channel allocation for satellite systems

The frequency spectrum allocated to today´s cellular communications systems is limited and has to be used wisely. Dynamic channel allocation algorithms have been proposed in order to increase the frequency reuse over what is achievable with fixed channel allocation techniques. This paper addresses the problem of distributing the available channels amongst mobile satellite users, by introducing algorithms that depend on the exact location of the mobile in the satellite footprint. Moreover, simulated annealing is added to our algorithms, where the optimisation proceeds in parallel with the system evolution in time. The results produced are compared to established methods and they indicate the power of the techniques described here