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In GEO satellite communication with multi-beam antenna coverage, the decline of uplink performance will appear when the earth terminal near to the junction area of beams coverage. A method to solve the problem by beam diversity technique is studied in this paper. After presenting a new generation method of Nakagami-m fading channel simulation model, we build up a system model for the analysis of multi-beam...
Two contradictory requirements of the on-board switch scheme are the Quality of Service (QoS) performance and the complexity limitation. Therefore, in order to achieve a better trade-off between the performance and the resource utilization, a new onboard switch scheme based on Differentiated Service (DiffServ) is proposed. Under the scheme, a QoS mapping module adopting the concept of the (m,k) model,...
According to the standard data mining process, CRISP-DM, the procedure of a customer chum prediction model is discussed thoroughly from the six phases of business understanding, data understanding, data preparation, modeling , evaluation and deployment. In view of the traditional ID3 algorithm insufficiency, one kind of weighting entropy thought is proposed, the ID3 algorithm is improved, then, a...
Based on the concept of DiffServ (Differentiated Service), an on-board switch framework is proposed, which satisfies QoS performance requirements and maintains a fairly low complexity. It applies the (m, k) model to the mapping between the terrestrial and satellite network traffic and uses the double-LB (Leak Bucket) model to control the traffic efficiently. Simulation results show that the scheme...
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