基于FPGA的反余弦函数的实现

Implementation of Arccosine Function Based on FPGA

快速精确的反余弦函数的运算在现在工程中有着广泛的应用。为了提高反余弦函数的精度和计算能力,提出了基于CORDIC算法的反余弦函数的实现方法。采用流水线的硬件结构实现了该算法,提高了运算速度和精度,并通过预处理将所求的角度延伸到整个坐标。在Xilinx公司spartan6系列芯片xc6slx16上予以验证,结果表明该算法的数据处理速度快,精度较高,适用于大数据量高速的数字信号处理领域。

Fast and accurate computation of arccosine function has been used widely in modem engineering. In order to improve the precision and calculating capacity of arccosine function, a implementation method for arccosine function based on CORDIC algorithm is presented. The CORDIC algorithm is implemented using the hardware structure of pipeline processing, which improves the processing speed and precision, and through pretreatment, the Angle required is extended to the whole coordinate. The experimental results which are verified on the spartan6 xc6slxl6 chip from Xilinx show that this algorithm is faster in data processing and has higher precision, and is suitable for signal processing field of large amount of high speed data speed.