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Redundant CORDIC methods with a constant scale factor for sine and cosine computation

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3 Author(s)
Takagi, N. ; Dept. of Inf. Sci., Kyoto Univ., Japan ; Asada, T. ; Yajima, S.

Proposes two redundant CORDIC (coordinate rotation digital computer) methods with a constant scale factor for sine and cosine computation, called the double rotation method and the correcting rotation method. In both methods, the CORDIC is accelerated by the use of a redundant binary number representation, as in the previously proposed redundant CORDIC. In the proposed methods, since the number of rotation-extensions performed for each angle is a constant, the scale factor is a constant independent of the operand. Hence, one does not need to calculate the scale factor during the computation, and can make a more efficient sine and cosine generator than that based on the previous redundant CORDIC

Published in:

Computers, IEEE Transactions on  (Volume:40 ,  Issue: 9 )

Date of Publication:

Sep 1991

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