CORDIC算法及其展开结构的FPGA实现  

CORDIC algorithm andits FPGA implementation of the deployable structure

作　　者：高兵益 徐磊[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电子测量技术》2017年第11期85-88,共4页Electronic Measurement Technology

摘　　要：针对FPGA系统中涉及三角函数等数学运算,而传统的查找表方法占用资源较多,计算精度不足等问题,提出了基于CORDIC算法的三角函数计算的实现方法。首先给出了CORDIC算法的硬件结构,然后使用Verilog HDL硬件描述语言,在Quartus II 13.1中对算法进行编译和仿真,并对仿真结果和实际结果进行误差分析,最后选择Altera公司的Cyclone IV E系列中EP4CE30F23C6器件,完成了CORDIC算法的FPGA实现。实验结果表明,该算法能够利用较少的硬件资源,实现较高的计算精度,并且运算速度较快,可以满足实际应用中的计算需求。The FPGA system involves the trigonometric function as the mathematical operation, but the traditional look-up table method takes up more resources, the calculation problem of the lack o：[ precision, is proposed in this paper calculation method of trigonometric function based on CORDIC algorithm. Firstly, the hardware structure of the CORDIC algorithm, and then use the Verilog HDL hardware description language in Quartus II 13.1 in the algorithm is compiled and simulated, and the simulation results and actual results of error analysis, the final choice of EP4CE30F23C6 Altera devices Cyclone E series IV, implements FPGA CORDIC algorithm. The experimental results show that the algorithm can use less hardware resources to achieve high computational accuracy, and the computing speed is fasterand can meet the practical needs of computing.

关 键 词：坐标旋转数字计算机算法 现场可编程门阵列器件 展开结构 三角函数 

分 类 号：TN791[电子电信—电路与系统]