Gabor Analysis and Algorithms

Name: Gabor Analysis and Algorithms
Brand: Birkhauser Boston Inc
SKU: 9780817639594
Price: 167.83 EUR
Availability: InStock

Theory and Applications

Автор: Hans G. Feichtinger, Thomas Strohmer

Език:

Корици: С твърди корици

Издател: Birkhauser Boston Inc

Наличност: Външен склад

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167.83 € 328.24 лв

In his paper Theory of Communication [Gab46], D. Gabor proposed the use of a family of functions obt...

Информация за книгата

Автор

Hans G. Feichtinger, Thomas Strohmer

Език

Английски език

Корици

Книга - С твърди корици

Издадена

1997

страници

496

EAN

9780817639594

ISBN

0817639594

Enbook ID

01399163

Издател

Birkhauser Boston Inc

Теглоt

1980

Размери

155 x 235 x 34

Пълно описание

In his paper Theory of Communication [Gab46], D. Gabor proposed the use of a family of functions obtained from one Gaussian by time-and frequency shifts. Each of these is well concentrated in time and frequency; together they are meant to constitute a complete collection of building blocks into which more complicated time-depending functions can be decomposed. The application to communication proposed by Gabor was to send the coeffi cients of the decomposition into this family of a signal, rather than the signal itself. This remained a proposal-as far as I know there were no seri ous attempts to implement it for communication purposes in practice, and in fact, at the critical time-frequency density proposed originally, there is a mathematical obstruction; as was understood later, the family of shifted and modulated Gaussians spans the space of square integrable functions [BBGK71, Per71] (it even has one function to spare [BGZ75] . . . ) but it does not constitute what we now call a frame, leading to numerical insta bilities. The Balian-Low theorem (about which the reader can find more in some of the contributions in this book) and its extensions showed that a similar mishap occurs if the Gaussian is replaced by any other function that is "reasonably" smooth and localized. One is thus led naturally to considering a higher time-frequency density.

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Gabor Analysis and Algorithms

Theory and Applications

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