Title :
FPGA-based CRAIMOT basis function generator
Author :
Misans, Peteris ; Terauds, Maris ; Valters, Gatis ; Derums, Uldis ; Vasilevskis, Nauris
Author_Institution :
Riga Tech. Univ., Riga
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;
Conference_Titel :
Norchip, 2007
Conference_Location :
Aalborg
Print_ISBN :
978-1-4244-1516-8
Electronic_ISBN :
978-1-4244-1517-5
DOI :
10.1109/NORCHP.2007.4481076
