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Dynamic spectrum access becomes a promising approach to increase the efficiency of spectrum usage. Several game theoretic model based dynamic spectrum sharing scheme were proposed to harmonize the system global utility and individual payoffs. Since DSAN users with limited rationality and selfishness adapt their behaviors to environmental dynamics gradually rather than quickly response to the change...
Recently, cognitive radio is becoming a popular research field and is considered to be a revolutionary technology for the next generation wireless systems (4G). However, the introduction of cognitive radio has great influences on network architecture of 4G systems. Therefore, a framework of logical architecture for 4G composite radio environments is proposed on the basis of cognitive radio. The proposed...
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