基于FPGA的CORDIC算法的改进及实现  

The improvement and implementation of CORDIC algorithm based on FPGA

作　　者：刁玉[1] 宋泽琳[2] 马令坤[2] 

机构地区：[1]中国人民解放军第四三二八工厂,山西长治046011 [2]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《微型机与应用》2011年第16期78-81,共4页Microcomputer & Its Applications

摘　　要：介绍了CORDIC算法的基本原理,分析了其具体计算方法。针对利用CORDIC流水线实现FFT蝶形运算耗费资源多的问题,依据CORDIC计算迭代系数的方法改进了CORDIC流水线的结构形式,使其适应FFT算法。选用ALTERA公司CycloneII系列的EP2C35F672C6来实现整个FFT处理器,并对设计进行了时序仿真和硬件仿真。通过比较,计算结果与设计基本一致。Introduce the basic principle of CORDIC algorithm, and analyse the calculation method of CORDIC algorithm. For use of CORDIC streamline realize FFT wing operation cost more resources, according to CORDIC itcrative method of calculating coefficient to improve CORDIC pipeline structure form, in order to accommodate FFT algorithm. Choose ALTERA company CycloneⅡ series of EP2C35F672C6 to realize the whole FFT processor. And timing simulation and hardware emulation are designed. Through comparing the both,the calculation results are basically the same.

关 键 词：CORDIC FFT CYCLONE Ⅱ 流水线 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]