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Properly addressing the performance issues presented in database systems is and has been a significant technological challenge, this due to the uncontrolled fluctuation of user requests. Being able to predict the behaviour of such systems can greatly improve their performance. Several prediction methods, such as linear regression and autoregressive moving average, among others, have extensively been...
Cognitive radio systems aim to take advantage of the spatiotemporal empty spectrum without causing harmful interference towards the primary network by utilizing knowledge of the prevailing radio environment. The radio environment is typically modeled with propagation models or by interpolating spatially distributed field measurement data. This paper presents a practical online data assimilation method...
By combining Fractional Spectral Subtraction (FSS) with Perceptual Linear Predictive (PLP), a hybrid method of noise robustness speech recognition isinvestigated in this paper. This method uses FSS for noisy speech to reduce noise components in the fractional Fourier domain. According to the results ofcomputing Itakura distance and Mean Square Error (MSE), an approximate optimal fractional order is...
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