This paper presents a CORDIC (coordinate rotation digital computer) algorithm and architecture for the rotation mode in which the directions of all micro-rotations are precomputed while maintaining a constant scale factor. Thus, an examination of the sign of the angle after each iteration is no longer required. The algorithm is capable to perform the CORDIC computation for an operand word-length of 54 bits. Additionally, there is a higher degree of freedom in choosing the pipeline cutsets due to the novel feature of independence of the iterations and in the CORDIC rotation.
This article is part of the series Implementation of DSP and Communication Systems.
P-CORDIC: A Precomputation Based Rotation CORDIC Algorithm
1 Broadcom Corporation, Irvine, CA 92619, USA
2 Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
EURASIP Journal on Advances in Signal Processing 2002, 2002:137251 doi:10.1155/S1110865702205028
The electronic version of this article is the complete one and can be found online at: http://asp.eurasipjournals.com/content/2002/9/137251
|Received:||30 August 2001|
|Revisions received:||14 May 2002|
|Published:||1 September 2002|
© 2002 Kuhlmann and Parhi