Cordic method and architecture applied in vector rotation

Details Cordic method and architecture applied in vector rotation Cordic method and architecture applied in vector rotation

2006-05-16

2006-05-16

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07047269

ABSTRACT:
A CORDIC method and a CORDIC architecture applied in vector rotation are disclosed. An elementary angles set is extended by representing the elementary angles as the arctangent of the sum of two single signed-power-of-two terms to an extended elementary angles set. A combination of elementary angles is found from the extended elementary angles set such that the residue angle error can be minimized. A quantized scaling factor is used to scale the combination of elementary angles after being micro-rotated.

REFERENCES:
patent: 2003/0050949 (2003-03-01), Van Wechel et al.
patent: 2003/0206600 (2003-11-01), Vankka
patent: 2004/0039761 (2004-02-01), Wechel et al.
Cheng-Shing Wu and An-Yeu Wu, “A Novel Trellis-Based Searching Scheme for Eeas-Based Cordic Algorithm”, ICASSP 2001.

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