The Scaling-Free CORDIC Using Generalized Micro-Rotation Selection
Shruthi Shree1, Sudha H2
1Shruthi Shree, Department of Electronics & Communication, Bangalore Institute of Technology, Bangalore, India.
2Sudha H, Department of Electronics & Communication, Bangalore Institute of Technology, Bangalore, India.
Manuscript received on March 12, 2013. | Revised Manuscript received on April 13, 2013. | Manuscript published on April 30, 2013. | PP: 905-909 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1610042413/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper presents an CORDIC algorithm that completely eliminates the scale-factor. By suitable selection of the order of approximation of Taylor series the proposed CORDIC circuit meets the accuracy requirement, and attains the desired range of convergence. Besides we have proposed an algorithm to redefine the elementary angles for reducing the number of CORDIC iterations. A generalized micro-rotation selection technique based on high speed most-significant-1-detection obviates the complex search algorithms for identifying the microrotations. The proposed CORDIC processor provides the flexibility to manipulate the number of iterations depending on the accuracy, area and latency requirements.