分析了CORDIC算法的基本原理和MVR-CODIC算法的特點(diǎn)。在此基礎(chǔ)上，提出了一種改進(jìn)型MVR-CODIC算法，利用查ROM表代替原算法中比例因子的計(jì)算方法，討論了改進(jìn)后算法的所需ROM表的容量，給出了實(shí)現(xiàn)框圖。實(shí)驗(yàn)證明，改進(jìn)型MVR-CODIC算法更適合于用大規(guī)模集成電路實(shí)現(xiàn)。
關(guān) 鍵 詞 MVR-CORDIC算法; 微旋轉(zhuǎn); 超大規(guī)模集成電路; 現(xiàn)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