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| 一种CORDIC算法的FPGA实现 | |
| 引用本文： | 骆艳卜,张会生,张斌,吴俊宏.一种CORDIC算法的FPGA实现[J].计算机仿真,2009,26(9):305-307,354. |
| 作者姓名： | 骆艳卜 张会生 张斌 吴俊宏 |
| 作者单位： | 1. 西北工业大学电子信息学院,陕西,西安,710072;空军工程大学电讯工程学院,陕西,西安,710077 2. 西北工业大学电子信息学院,陕西,西安,710072 3. 空军工程大学电讯工程学院,陕西,西安,710077 |
| 摘 要： | 在数字化中频接收机中,为了实现相干解调,接收端的数控振荡器需要产生一个本地相干载波,其频率和相位必须与发送端载波的频率和相位严格保持一致,因此需要用到arctan函数计算相位差。研究了一种基于CORDIC算法计算arctan函数的方法,提出了基于CORDIC算法实现arctan函数运算的硬件流水线实现结构,并在芯片上进行仿真实现,仿真结果表明,其输出误差较小,与理论值基本一致,利用其可实现数字载波同步中鉴相、鉴频功能。 |
| 关 键 词： | 载波同步 坐标旋转数字计算方法 反正切函数 现场可编程芯片实现 |
FPGA Implementation of a CORDIC Algorithm |
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| LUO Yan-bu,ZHANG Hui-sheng,ZHANG Bin,WU Jun-hong.FPGA Implementation of a CORDIC Algorithm[J].Computer Simulation,2009,26(9):305-307,354. | |
| Authors: | LUO Yan-bu ZHANG Hui-sheng ZHANG Bin WU Jun-hong |
| Affiliation: | 1. College of Electronic Information Engineering;Northwestern Poly-technica1 University;Xi'an Shanxi 710072;China;2. The Telecommunication Engineering Institute;Air Force Engineering University;China |
| Abstract: | In order to achieve coherent demodulation in digital IF receiver,numerical control oscillator in the receiver has to generate a local coherent carrier,whose frequency and phase should be accurately in accordance with that of the transmitter. Hence,arctan function should be required to compute the phase error. This paper studies a method of calculating arctan function based on CORDIC algorithm,and puts forwards hardware architecture of implementing arctan function. In the end,an EP2C8Q208C8N chip belonging t... |
| Keywords: | Carrier synchronization Coordinate rotation digital computer algorithm Arctan function FPGA implementation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
