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Efficient utilization of the satellite radio resource is of paramount importance to a satellite system's performance and economic competitiveness. The likely use of Ka band and above frequencies for future satellite systems and the need for a better quality of service (QoS) complicate the radio resource management process especially in the return link of a satellite system, one that connects the user to the Gateway or Hub. This paper discusses the research themes that are part of the PhD research, carried out at SUPAERO, aimed at developing radio resource management algorithms that will ultimately improve the resource utilization and the QoS for the return link of interactive broadband satellite systems employing fade mitigation techniques at Ka/Q/V band frequencies. The inputs and optimization criteria for the resource management process are identified. Various physical layer issues that confront the process are also identified. The duration of the research is about 3 years from March 2007 to end of 2009.