With the development of the communication technology, the most important communicating resource, spectrum resource has been very scarce. In order to resolve the spectrum ratio and the quality of service (QoS) problems, A lot of methods has been found to release this situation of resource shortage. The OFDM technique has been the key technique in
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With the rapid growing of wireless applications, the conflict between the limited wireless resource and the increasing Quality of Service (QoS) requirement of multimedia traffics becomes more and more urgent. It involves various technologies from different layers of wireless systems to reconcile the conflict. At the physical layer, Orthogonal Frequency Division Multiplexing (OFDM) is an
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Wireless resource management is one of the key techniques in cognitive radio networks, which attracts great research attention. This dissertation is supported by the National Natural Science Foundation of China, international cooperation project and other fundings. The dissertation contains valuable work on both theories and applications.Based on the deeply researching on the principles of cognitive
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