Initial Implementation of Generalized Haar Like Orthonormal Transforms into FPGA-Based Devices - Part II: Parametrical Decomposition Reconstruction Filters

2008
Peteris Misāns, Gatis Valters, Māris Tērauds

This paper deals with the aspects of practical implementation of parametrical decomposition reconstruction filter(s) (DeReFs) based on generalized parametrical Haar transform (RA HT) introduced before by the authors. The presented CORDIC based RA HT device is implemented as Altera’s Cyclone II FPGA. A simplified block diagram and parameters of the filter module are provided. Two versions of the module are reviewed and the version comparison is provided. The developed real time filter for selected Altera's chip can run at sampling frequencies up to 12.5 MHz. The filters can be successfully used for both extraction and rejection of pulse like signals with an infinite diversity of shapes. Two examples of separation of single pulse-like signal by the filter are provided. Obtained results show a noticeable improvement of extraction/rejection in comparison to the classical Haar DeReF.

Atslēgas vārdi
CORDIC algorithm, FPGA, Generalization of Haar functions, Orthogonal filters

Misāns, P., Valters, G., Tērauds, M. Initial Implementation of Generalized Haar Like Orthonormal Transforms into FPGA-Based Devices - Part II: Parametrical Decomposition Reconstruction Filters. Telekomunikācijas un elektronika. Nr.8, 2008, 22.-26.lpp. ISSN 1407-8880.

Publikācijas valoda
English (en)