Wednesday, March 31, 2010

Communication System

As an important part of a global seamless personal communication, the Low-Earth Orbit(LEO) constellation communication system is developing in many aspects of correlative technique. Wireless resource management is an important researching 12hot cheap prom dresses field, of which a main technique channel assignment is.The moving character of the constellation satellite decides that the users handoff frequently among the spot beams of the satellites. So it’s necessary to find a more adaptable channel assignment scheme than the one used in terrestrial cellular networks to sell discount wedding dresses decrease the handoff failure probability and the new calling blocking probability, in order to improve Quality of Service. The proposed schemes just consider either the less wedding gowns dresses aspects of Quality of Service or only real-time traffic. Therefore, it’s significant to research the channel assignment scheme which is trade-off between the new calling and the handoff custom made prom dresses calling performance and adaptable in Multi-carrier LEO Constellation Communication System.Firstly, we described the concept of resource management and channel assignment in LEO Constellation chi flat iron Communication System, summarized totally the classical algorithms to solve the problem of the channel assignment. After analyzing the mobile model and the correlative parameters, QoS performance evaluation of the these schemes had been carried out by simulations.
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