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International Journal of Reconfigurable Computing
Volume 2014, Article ID 615472, 4 pages
Research Article

Simple Hybrid Scaling-Free CORDIC Solution for FPGAs

1Department of Security Information and Technology, Lviv Polytechnic National University, Lviv 79013, Ukraine
2Department of Computer and Network Engineering, Hiroshima City University, Hiroshima 731-3194, Japan
3Patient Care Solutions Department, Philips Research, High Tech Campus, 5656 AE Eindhoven, The Netherlands

Received 13 October 2013; Revised 10 March 2014; Accepted 20 March 2014; Published 24 April 2014

Academic Editor: Michael Hübner

Copyright © 2014 Leonid Moroz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


COordinate Rotation DIgital Computer (CORDIC) is an effective method that is used in digital signal processing applications for computing various trigonometric, hyperbolic, linear, and transcendental functions. This paper presents the theoretical basis and practical implementation of circular (sine-cosine) CORDIC-based generator. Synthesis results of this generator based on Altera Stratix III FPGA (EP3SL340F1517C2) using Quartus II version 9.0 show that the proposed hybrid FPGA architecture significantly reduces latency (42% reduction) with a small area overhead, compared to the conventional version. The proposed algorithm has been simulated for sine and cosine function evaluation, and it has been verified that the accuracy is comparable with conventional algorithm.