说明：  就目前的趋势来看，对硬件复杂信号处理的了解主要是缺少对硬件信号处理结构的了解。虽然有许多硬件高效算法的存在，但是由于在过去得25年里软件的优势明显，人们对这些法则并不了解。CORDIC法则就是其中的一个，它是运用平移-相加完成某些三角函数，双曲线，线性，对数的运算功能。虽然有很多的文章已经介绍了CORDIC 运算法则的各种不同的方面 ，却很少有针对CORDIC在FPGA上执行的研究。这篇论文就是研究在一个CORDIC体系下，以往的那些功能是如何完成的，以及解释运算法则如何工作,而且探究针对FPGA的执行情况。
(The current trend back toward hardware intensive signal processing has uncovered a relative lack of understanding of hardware signal processing architectures.Many hardware efficient algorithms exist,but these are generally not well known due to the dominance of software systems over the past quarter century.Among these algorithms is a set of shift-add algorithms collectively known as CORDIC for computing a wide range of functions including certain trigonometric, hyperbolic,linear and logarithmic functions. While there are numerous articles covering various aspects of CORDIC algorithms,very few survey more than one or two,and even fewer concentrate on implementation in FPGAs.This paper attempts to survey commonly used functions that may be accomplished using a CORDIC architecture, explain how the algorithms work,and explore implementation specific to FPGAs.)