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Optimizing the coexistence performance of a cognitive radio (CR) greatly depends on the extent of its awareness of the radio environment. The more knowledge a CR can acquire about primary user (PU) systems, the better it can plan its radio activities. Ideally, it would like to classify the PU systems with respect to `known standards' so that the documented knowledge of PU systems can be usefully utilized...
This paper presents the investigation on a system model for the stabilisation of a Magnetic Levitation System (Maglev's). Furthermore, the investigation on Proportional Integrated Derivative Controller (PID) also reported here. In this paper shows to design both PID and Fuzzy Logic Control (FLC) based on the system model. Maglev's give the contribution in industry and this system has reduce the power...
Cognitive radio (CR) is being considered as a promising technology to improve the spectral usage and coexistence behavior of radio systems. The CR can work as a secondary user (SU) in coexistence with primary user (PU) systems without generating harmful interference for them. However, the performance of a SU greatly depends on its abilities to become aware of its radio environment. The more knowledge...
Forecast performance on time serial data by soft computing models like fuzzy systems depends critically, in some cases, on the preprocessing methods used. Time series that exhibit changes in variance require preprocessing, and wavelet-based preprocessing provides a 'natural', parameter-free method for decomposing such time series. However, there are cases where the variance structure of a time series...
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