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Next generation wireless communication systems are expected to relay on integrated networks consisting of multiple wireless technologies. Heterogeneous wireless networks based, for instance, on systems such as WiMAX and TD-SCDMA can combine their respective advantages, offering a high Quality of Service (QoS) to mobile users. The vertical handoff decision is crucial to the integration of heterogeneous...
Cognitive radio is a new technology which can sense the availability of local spare spectrum and be used to communicate with each other. In a multi-hop network consisted of cognitive radio nodes, the spectrum sharing for each cognitive radio node is very important. In real condition, as the number of users in different fixed regions is diverse, the dynamic spectrum sharing strategy should be dissimilar...
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