湖南大学学报（自然科学版）2023，Vol.50Issue(12)：69-75,7.DOI:10.16339/j.cnki.hdxbzkb.2023299
高精度低消耗CORDIC算法设计
Design of CORDIC Algorithm with High Accuracy and Low Consumption
摘要
Abstract
Aiming at the problems of high hardware resource consumption and low output accuracy in CORDIC algorithms,this design proposes an improved Coordinate Rotation Digital Computer(CORDIC)algorithm based on interval merging iteration.Based on the two-stage CORDIC algorithm,the algorithm uses interval merging iteration to complete the merging iteration operation in the second stage.For the truncation error caused by shift operation in merge iteration,interval merge iteration reduces the data error and resource consumption generated during the merge iteration process by reducing the size and number of data shifts.The simulation results show that the improved CORDIC algorithm not only retains the good characteristics of the two-stage algorithm in low latency but also reduces register consumption by 36.8％compared with the basic algorithm,14.8％and 9.5％compared with the three-segment and two-stage algorithms,respectively.When a 16 bit output bit-width is given,the average error of the improved algorithm is reduced by 37.0％compared with the basic algorithm,19.4％and 24.5％respectively compared with the three segment and two segment algorithms.Therefore,it is more suitable for modern digital communication with high speed,high accuracy,and low consumption.关键词
坐标旋转计算机/角度二极化重编码/区间合并迭代/数字信号处理Key words
coordinate rotation digital computer(CORDIC)/angle bipolar recoding/interval merging iteration/digital signal processing分类
电子信息工程引用本文复制引用
姚亚峰,杨金岷,周群群,付东兵..高精度低消耗CORDIC算法设计[J].湖南大学学报（自然科学版）,2023,50(12):69-75,7.基金项目
模拟集成电路国家重点实验室稳定支持项目(JCKY2019210C058),Stability Support Project of State Key Laboratory of Analog(JCKY2019210C058) （JCKY2019210C058）
