FPGA-based CRAIMOT basis function generator

Author

Misans, Peteris ; Terauds, Maris ; Valters, Gatis ; Derums, Uldis ; Vasilevskis, Nauris

Author_Institution

Riga Tech. Univ., Riga

fYear

2007

fDate

19-20 Nov. 2007

Firstpage

1

Lastpage

6

Abstract

This paper deals with the aspects of practical generation of basis function(s) (BF(s)) and the basic notions for orthonormal parametrical transform called as "constant rotation angle in matrix orthonormal transform" (CRAIMOT). The presented CRAIMOT BF generator is implemented as Altera\´s Cyclone II FPGA. A simplified block diagram and parameters of the generator are provided. The generator has a parallel structure and 5 times shorter sample time in opposite to the previous implementation. The sine/cosine former of BF generator has 3 different versions - CORDIC based, the linear interpolation based, and RAM table based. The comparison of the mentioned versions is provided.

Keywords

field programmable gate arrays; interpolation; random-access storage; Altera´s Cyclone II FPGA; CORDIC; CRAIMOT basis function generator; RAM table; constant rotation angle; linear interpolation; matrix orthonormal transform; orthonormal parametrical transform; simplified block diagram; Cyclones; Discrete transforms; Field programmable gate arrays; Filtering; Interpolation; Shape; Signal analysis; Signal generators; Signal synthesis; Sparse matrices; FPGA; Fixed Point Arithmetic; Generation of Basis Functions; Parameterization of Orthogonal Transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Norchip, 2007

Conference_Location

Aalborg

Print_ISBN

978-1-4244-1516-8

Electronic_ISBN

978-1-4244-1517-5

Type

conf

DOI

10.1109/NORCHP.2007.4481076

Filename

4481076