Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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High Speed CORDIC Architecture with Pre-computed the Direction of Micro-rotation and Table-Lookup

미세회전 예측 및 Table-Lookup을 이용한 CORDIC 방식 고속 삼각함수 연산기

  • Cho, Yong-Kwon (VLSI & CAD Laboratory Department of Electrics and Electronics Yonsei University) ;
  • Lee, Moon-Key (VLSI & CAD Laboratory Department of Electrics and Electronics Yonsei University)
  • 조용권 (연세대학교 전기전자공학 VLSI & CAD 연구실) ;
  • 이문기 (연세대학교 전기전자공학 VLSI & CAD 연구실)
  • Published : 2004.06.01
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Abstract

The CORDIC algorithm can be implemented very simple H/W, but needs a lot of latency to compute trigonometric function. The RA(Redundant Arithmetic) resolves this problem, but also has difficulty to determine the directions of micro-rotations. The pre-computed direction of micro-rotation algorithm relieves the RA of this matter. In this paper, we proposed the modified the pre-computed algorithm adopted with a table-lookup. Instead of reducing H/W complexity, its performance and calculation errors are improved.

Keywords