基于改进的CORDIC算法的FFT复乘及其FPGA实现  

Improved cordic-based FFT plural-multiplication and its FPGA implementation

作　　者：张伟[1] 张安堂[1] 肖宇[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《电子技术应用》2011年第4期51-54,共4页Application of Electronic Technique

摘　　要：根据定点FFT中旋转因子所对应的CORDIC旋转方向可预先求解的特点,改进了CORDIC算法中旋转方向的计算方法,在节约乘法器资源的同时兼顾了速度与精度的要求,并基于改进的CORDIC算法,利用FPGA实现了这种FFT复乘模块。仿真结果表明该设计可行,具有一定的实际意义和应用前景。This paper improved the algorithm of rotate direction in CORDIC according to the characteristic of CORDIC rotation direction of rotation factor can be solved in advance in fixed point FFT, meeting the requirements of high-speed and precision as well as resources-saving. And realized this FFF plural-multiplication module based on improved CORDIC algorithm by using FPGA, and the simulation result shows that it is feasible and has some practical meaning and applied foreground.

关 键 词：坐标旋转数字计算方法 复数乘法 模校正因子 现场可编程门阵列 

分 类 号：TN713[电子电信—电路与系统]