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Cognitive radio, as a prominent technology to solve frequency scarcity by dynamical spectrum access, attract many research interests. In order to fill voids in the wireless spectrum while cleverly avoid interference to the existing communication system, real-time spectrum sensing is quite necessary for a cognitive radio system. Through study about performance of energy detection, it finds that the...
Hysteresis is a specific character of a wide range of physical systems and devices, such as electromagnetic fields, mechanical stress-strain elements, and electronic relay circuits. The extended Bouc-Wen model is one of the most widely accepted phenomenological models of hysteresis in mechanics. However the multi parameters have plagued its further application because the capability of computer and...
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