A BCD-based architecture for fast coordinate rotation

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Title: A BCD-based architecture for fast coordinate rotation
Authors: Jimeno-Morenilla, Antonio | Mora, Higinio | Sanchez-Romero, Jose-Luis | Pujol, Francisco A.
Research Group/s: UniCAD: Grupo de Investigación en CAD/CAM/CAE de la Universidad de Alicante
Center, Department or Service: Universidad de Alicante. Departamento de Tecnología Informática y Computación
Keywords: Binary coded decimals | Computer performance | CORDIC | Digital arithmetic
Knowledge Area: Arquitectura y Tecnología de Computadores
Date Created: 6-Jul-2007
Issue Date: 26-Feb-2008
Publisher: Elsevier
Citation: JIMENO MORENILLA, Antonio, et al. "A BCD-based architecture for fast coordinate rotation". Journal of Systems Architecture. Vol. 54, No. 8 (Aug. 2008). ISSN 1383-7621, pp. 829-840
Abstract: Although radix 10 based arithmetic has been gaining renewed importance over the last few years, decimal systems are not efficient enough and techniques are still under development. In this paper, an improvement of the CORDIC (coordinate rotation digital computer) method for decimal representation is proposed and applied to produce fast rotations. The algorithm uses BCD operands as inputs, combining the advantages of both decimal and binary systems. The result is a reduction of 50% in the number of iterations if compared with the original Decimal CORDIC method. Finally, we present a hardware architecture useful to produce BCD coordinates rotations accurately and fast, and different experiments demonstrating the advantages of the new method are shown. A reduction of 75% in a single stage delay is obtained, whereas the circuit area just increases in about 5%.
URI: http://hdl.handle.net/10045/12558
ISSN: 1383-7621 (Print) | 1873-6165 (Online)
DOI: 10.1016/j.sysarc.2008.02.001
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.sysarc.2008.02.001
Appears in Collections:INV - UNICAD - Artículos de Revistas
INV - AIA - Artículos de Revistas

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