Issue No. 09 - September (1991 vol. 40)

ISSN: 0018-9340

pp: 989-995

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/12.83660

ABSTRACT

<p>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.</p>

INDEX TERMS

sine computation; CORDIC methods; constant scale factor; coordinate rotation digital computer; cosine computation; redundant binary number representation; digital arithmetic; redundancy.

CITATION

S. Yajima, T. Asada, N. Takagi, "Redundant CORDIC Methods with a Constant Scale Factor for Sine and Cosine Computation",

*IEEE Transactions on Computers*, vol. 40, no. , pp. 989-995, September 1991, doi:10.1109/12.83660