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Development of VHDL model for fixed-point discrete wavelet transform

Ahsan, Md. Rezwanul and Ibrahimy, Muhammad Ibn and Khalifa, Othman Omran (2012) Development of VHDL model for fixed-point discrete wavelet transform. In: International Conference on Computer and Communication Engineering (ICCCE 2012), 3-5 July 2012, Seri Pacific Hotel Kuala Lumpur.

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The wavelet transform is an efficient technique for multi-resolution analysis of non-stationary and fast transient signals. For this reason, wavelet transform has been widely applied in signal analysis through processing, encoding, denoising and encrypting. The objective of this paper is to represent the development process of VHSIC (Very High Speed Integrated Circuit) Hardware Description Language (VHDL) based wavelet transform model. The VHDL model development is based on fixed-point arithmetic. A fixed-point number represents a number which has fixed number of digits after and before of the radix point and of real data type. Discrete Wavelet Transform (DWT) is a method that uses wavelet analyser in which case the signals composed into small pieces preserving both time and frequency properties. Out of the mother wavelet functions family, 2nd order of Daubechies (4-tap) has been widely used in denoising various types of biomedical signals. This research work involves with the VHDL modeling of Daubechies wavelet which is developed by Ingrid Daubechies. The functionality of VHDL model for DWT structure has been tested successfully and its performance level is in the satisfactory region (up to two decimal points of precision).

Item Type: Conference or Workshop Item (Full Paper)
Additional Information: 4637/25717
Uncontrolled Keywords: discrete wavelet transforms , encoding , fixed point arithmetic , hardware description languages , signal processing
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr Muhammad Ibrahimy
Date Deposited: 18 Sep 2012 14:54
Last Modified: 18 Sep 2012 14:54
URI: http://irep.iium.edu.my/id/eprint/25717

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