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Proceedings Paper

Matrix triangularization by fixed-point redundant CORDIC with constant scale factor
Author(s): Jeong-A Lee; Tomas Lang
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Paper Abstract

We develop a redundani CORDIC scheme where the scale factor is forced to be constant while computing angles for 2 x 1 plane rotations. Based on the scheme we present a fixed-point implementation of matrix triangularization by Luk''s parallel algorithm with the following additional features: (1) the final scaling operation is done by shifting (2) the number of iterations in CORDIC rotation unit is reduced by about 25 by expressing the direction of the rotation in radix-2 and radix-4 and (3) the conventional number representation of rotated output is obtained on-thefly not from a carry-propagate adder. The number of hardware modules and the speed are evaluated and compared with the previous CORDIC schemes.

Paper Details

Date Published: 1 November 1990
PDF: 18 pages
Proc. SPIE 1348, Advanced Signal Processing Algorithms, Architectures, and Implementations, (1 November 1990); doi: 10.1117/12.23507
Show Author Affiliations
Jeong-A Lee, Univ. of California/Los Angeles (United States)
Tomas Lang, Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 1348:
Advanced Signal Processing Algorithms, Architectures, and Implementations
Franklin T. Luk, Editor(s)

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