分析了CORDIC算法的基本原理和MVR-CODIC算法的特點。在此基礎上，提出了一種改進型MVR-CODIC算法，利用查ROM表代替原算法中比例因子的計算方法，討論了改進后算法的所需ROM表的容量，給出了實現框圖。實驗證明，改進型MVR-CODIC算法更適合于用大規模集成電路實現。
關 鍵 詞 MVR-CORDIC算法; 微旋轉; 超大規模集成電路; 現場可編程邏輯器件

Abstract This article introduces the basic principle of the Coordinate Rotation Digital Compute (CORDIC) algorithm and key feature of modified Vector Rotational CORDIC (MVR-CORIDC) algorithm. A new algorithm is presented which is base on MVR-CORDIC algorithm. The modified MVR-CORDIC algorithm makes use of the searching ROM table to calculate scaling factor instead of original method in MVR-CORDIC algorithm. This paper analyses capacity of ROM table of modified MVR-CORIDC algorithm, further more a detail implementation frame is given. The experiment result shows that the modified MVR-CORDIC algorithm is more suitable than original algorithm in realization with very large scale integration.
Key words MVR-CORDICA algorithm; micro-rotation; very large scale integration; field programmable gate array