Distributed Power and Carrier Allocation in Multibeam Satellite Uplink with Individual SINR Constraints

Abstract--Current multibeam satellite systems perform centralized power and carrier allocation assuming a Multi-Frequency Time Division Multiple Access (MF-TDMA) scheme with fixed regular frequency reuse. This approach is not optimal when individual SINR constraints are to be met. In this paper, we formulate the problem of joint power and carrier allocation allowing non-regular frequency reuse. Actually, in order to increase the overall efficiency, we focus on a distributed formulation of the problem and compare it with the conventional power balancing solution. We solve the problem by dividing it in two coupled problems and find an analytical iterative solution. Furthermore, we compare the distributed power and carrier solution with a centralized conventional power balancing. Numerical results illustrates how the performance for both approaches is dependant on the individual SINR requests. We quantify the efficiency in the management of the SINR requirements per user in terms of throu...

• Type: Conference
• Year: 2009
• Where: GLOBECOM
• Authors: J. E. Barcelo-Llado, Maria Angeles Vázquez-Castro, Lei Jiang, Are Hjørungnes
• Keywords: Carrier Allocation, Communications, Conventional Power Balancing, Frequency Reuse, GLOBECOM 2009