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Electrical and Computer Engineering Commons™

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Electrical Engineering and Computer Science Faculty Publications

Series

2009

Articles 1 - 2 of 2

Full-Text Articles in Electrical and Computer Engineering

Cad Model For Co-Propagating Spatially Multiplexed Channels Of Same Wavelength Over Standard Multimode Fibers, Syed H. Murshid, Raka Biswas, Abhijit Chakravarty Apr 2009

Cad Model For Co-Propagating Spatially Multiplexed Channels Of Same Wavelength Over Standard Multimode Fibers, Syed H. Murshid, Raka Biswas, Abhijit Chakravarty

Electrical Engineering and Computer Science Faculty Publications

Spatial Domain Multiplexing (SDM) is a novel technique that allows co-propagation of two or more optical communication channels of the same wavelengths over a single strand of optical fiber cable by maintaining spatial separation between the channels. Spatial multiplexer known as the beam combiner module (BCM) supports helical propagation of light to ensure spatial separation between the channels. It is inserted at the input end of the system. Spatial de-multiplexing is achieved by a unit named beam separator module (BSM). This unit is inserted at the receiving end of the system and it routes the optical energy from individual channels …

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Denoising Using Adaptive Thresholding And Higher Order Statistics, Samuel Peter Kozaitis, Tim Young Mar 2009

Denoising Using Adaptive Thresholding And Higher Order Statistics, Samuel Peter Kozaitis, Tim Young

Electrical Engineering and Computer Science Faculty Publications

We showed that a hard threshold for wavelet denoising based on higher order statistics is comparable to a second order soft threshold. The hard threshold can be made adaptive by using a third order statistic as an estimate of the noise. In addition, the relationship between an adaptive hard threshold and retaining a fraction of wavelet coefficients is shown. Qualitative and quantitative metrics based on the mean-squared error are used to compare the hard thresholding and a soft-thresholding technique, BayesShrink.

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