A Novel Wavelet-Based Approach to Enhance the Performance of Mobile-Business Systems
MetadataShow full item record
We propose a novel wavelet-based approach (WBA) that accurately decides if the Internet traffic is currently SRD (short-range dependence) or LRD (long-range dependence) on the fly. As a result, it helps a real-time dynamic cache size tuner such as the MACSC (Model for Adaptive Cache Size Control) maintain the given cache hit ratio under all Internet traffic conditions. The WBA mechanism utilizes the following unique characteristics of wavelet coefficients (WC) for stationary signals f(x) : i) WC values by discrete wavelet transform (DWT), irrespective to if f(x) is SRD or LRD, are always SRD; ii) if f(x) is LRD then the WC variances scale divergently with the dilation factor; and iii) WC variances of SRD signals, however, converge to a constant. The DWT process is Dj,k = (f(x) , (J)j,k) or += Tji2 f f(x)w(Tj X - k)dx formally, where Dj,k arethe WC values, (J)j.k the mother wavelet, j the dilation factor/scale, and k the translation factor.
Copyright © 2010 IEEE This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Showing items related by title, author, creator and subject.
E-MACSC: A novel dynamic cache tuning technique to reduce information retrieval roundtrip time over the InternetWu, R.; Wong, A.; Dillon, Tharam S. (2006)The novel technique proposed in this paper for dynamic cache size tuning is an enhancement of the previous MACSC (Model for Adaptive Cache Size Control) approach. Similar to its MACSC predecessor the Enhanced MACSC (E-MACSC) ...
Kirby, Jonathan (2005)The article compares the radially averaged Fourier power spectrum against the global wavelet power spectrum ('global scalogram') for seven continuous, two-dimensional wavelets: Derivative of Gaussian, Halo, Morlet, Paul, ...
Reducing the dimensionality of hyperspectral remotely sensed data with applications for maximum likelihood image classificationSantich, Norman Ty (2007)As well as the many benefits associated with the evolution of multispectral sensors into hyperspectral sensors there is also a considerable increase in storage space and the computational load to process the data. ...