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FPGA Discrete Wavelet Transform Encoder/Decoder Implementation

  • Pedro Henrique Cox
  • Aparecido Augusto de Carvalho
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4234)

Abstract

In a multi-input an multi-output feedforward wavelet neural network, orthogonal wavelet basis functions are used as activate function instead of sigmoid function of feedforward network. This paper adresses the solution on processing biological data such as cardiac beats, audio and ultrasonic range, calculating wavelet coefficients in real time, with processor clock running at frequency of present ASIC’s and FPGA. The Paralell Filter Architecture for DWT has been improved, calculating wavelet coefficients in real time with hardware reduced up to 60%. The new architecture, which also processes IDWT, is implemented with the Radix-2 or the Booth-Wallace Constant multipliers. One integrated circuit Encoder/Decoder, ultrasonic range, is presented.

Keywords

Discrete Wavelet Transform Wavelet Coefficient Filter Coefficient Inverse Filter Discrete Wavelet Transform Coefficient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Pedro Henrique Cox
    • 1
  • Aparecido Augusto de Carvalho
    • 2
  1. 1.Fundacão Universidade Federal de Mato Grosso do SulCidade UniversitáriaBrazil
  2. 2.Faculdade de Engenharia de Ilha SolteiraUniversidade do Estado de São PauloIlha SolteiraBrazil

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