摘要
对传统的CORDIC算法进行改进,采用角度二进制低位转换成两极的模式和基本角度线性编码方式,更易于确定旋转方向,加快迭代速度。迭代过程中低位采用最高非零位最大逼近角的算法,高位采用基于4∶2压缩器的高速进位加法器的结构,在精度提高时其速度优势更加明显。实现结构采用流水线方式,不需要ROM存储空间,节省逻辑资源,满足高速高精度领域的运算要求。
The article makes the improvement to the traditional CORDIC algorithm, using binary to bipolar recoding and micro-rotation angle recoding for low binary of the angle, easier to determine the direction of rotation and accelerate the speed of iteration, In the iterative process, using the algorithm of maximum approximation angle of highest non zero binary for low binary, using fast carry-propagate adder based on d： 2 compressor for high binary, improvement of iteration speed, especially in the precision is improved. To realize the structure using pipelining, do not need ROM storage, saves logic resources, to satisfy high speed and high precision field.
出处
《电视技术》
北大核心
2012年第17期76-78,91,共4页
Video Engineering
基金
安徽高校省级自然科学研究项目(KJ2011Z091)
