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| 基于DDS的NCO设计 | |
| 引用本文： | 李星沛,何方白. 基于DDS的NCO设计[J]. 西南科技大学学报, 2006, 21(1): 64-66,79 |
| 作者姓名： | 李星沛 何方白 |
| 作者单位： | 重庆邮电学院,重庆,400065 |
| 摘 要： | 数字下变频器(DDC)是数字接收机的重要部件,而数字振荡器(NCO)又是影响数字下变频性能的关健器件。 NCO的设计采用直接数字频率合成(DDS)技术,并对DDS的相位舍位误差产生的原因进行了浅析。最后生成累加器模块和正(余)弦幅度存储器模块,实现了系统级综合和仿真。 |
| 关 键 词： | 软件无线电 DDS NCO Maxplus Ⅱ |
| 文章编号： | 1671-8755（2006）01-0064-03 |
| 收稿时间： | 2005-11-25 |
| 修稿时间： | 2005-11-25 |
Design of NCO Based on DDS |
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| Li Xingpei,He Fangbai. Design of NCO Based on DDS[J]. Journal of Southwest University of Science and Technology, 2006, 21(1): 64-66,79 | |
| Authors: | Li Xingpei He Fangbai |
| Affiliation: | Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
| Abstract: | Digital Down Conerter (DDC) is a vital device of digital receiver and Numerically Controlled Osillator( NCO) also is a key device that influences the DDC' s function. The design NCO adopts Direct Digital Frequency Synthesis (DDS) technology ,and makes a simple analysis about deserted phase error. Finally, a mould of accumulation addition device and a mould of sin or cos range ROM are created. System synthesis and simulation are implemented. |
| Keywords: | DDS NCO |
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