基于CORDIC的反双曲正切函数的FPGA实现  

The FPGA Implementation of Hyperbolic Arctangent Function

作　　者：陈石平[1] 李全[1] 莫丽兰[1] 段吉海[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《计算机工程与科学》2009年第5期150-152,共3页Computer Engineering & Science

基　　金：广西研究生教育创新项目(2007105950810m15)

摘　　要：双曲函数的应用领域十分广泛。本文首先介绍CORDIC算法双曲系统的基本原理及其计算模式,对CORDIC内核及其处理单元做了详细分析。在迭代算法的基础之上,采用流水线技术,以面积换速度,给出了一种基于流水线的CORDIC来实现反双曲正切函数,具有很高的精度和很快的速度,使设计出的软核能够在精度要求很高的场合中运行。用Verilog HDL对其编程设计和进行功能仿真、时序仿真及下载测试的结果表明,该函数具有很好的实用性。Hyperbolic functions are widely applied in many areas. This paper first introduces the principle of the CORDIC algorithm hyperbolic system and its computation model, and then gives a detailed analysis of pipelining the CORDIC kernel and its processor unit for the design. Based on the iterative algorithm, a new way of implementing hyper- bolic functions based on pipelining CORDIC is proposed. It improves the calculation precision and speed at the cost of FPGA resources, making the soft core adapted to higher-precision-required occasions. Finally the results of programming the CORDIC, performing the functional simulation and timing simulation, and downloading it to the FPGA show that it features great practicability.

关 键 词：坐标旋转数字计算算法 反双曲正切函数 流水线 

分 类 号：TP322.2[自动化与计算机技术—计算机系统结构]