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The advanced multibeam satellite equipped with phased array antenna and solid state power amplifiers can generate flexible beams, by managing interbeam interference to serve a very large number of users effectively over its coverage area. Onboard processing (OBP) functionality can enhance the flexibility of a large-scale antenna by speeding up computational processes and saving precious radio link...
We study a random access scheme for satellite packet communication with intentional interference. A modified Slotted ALOHA protocol is used with interferer power sensing to achieve maximum user throughput. For a malicious interferer who ignores the control parameters broadcast by the satellite (such as the back-off parameter), we show that the degradation of channel throughput is inversely proportional...
TCP does not perform well in networks with stochastic channels, with links that randomly drop packets or have long outages. Diversity routing has been proposed to improve TCP's performance in these networks. In diversity routing, a sublayer between TCP and the network replicates each transmitted packet and sends the multiple copies along parallel paths. As long as at least one of the copies reaches...
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