| 扩频通信系统中一种实现数字下变频器的算法 |
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| 引用本文： | 胡建强,张凤霞,赵杭生. 扩频通信系统中一种实现数字下变频器的算法[J]. 国际商务研究, 2007, 47(1): 97-99 |
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| 作者姓名： | 胡建强 张凤霞 赵杭生 |
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| 作者单位： | [1]总参第六十三研究所,南京210007 [2]解放军73686部队,南京210014 |
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| 摘 要： | 介绍了在扩频通信系统中一种产生数字下变频器(DDC)正交本振信号的方法--CORDIC算法,它在产生正弦值和余弦值时不需要太多的ROM资源,只需要简单的移位和加法等迭代操作,很容易在VLSI芯片上实现;文中也给出了用该算法实现DDC的VLSI结构.
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| 关 键 词： | 扩频通信 数字下变频 CORDIC算法 |
| 收稿时间： | 2006-06-09 |
| 修稿时间： | 2006-09-20 |
An Algorithm for Realizing DDC in Spread-Spectrum Communication System |
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| HU Jian-qiang,ZHANG Feng-xi,ZHAO Hang-sheng. An Algorithm for Realizing DDC in Spread-Spectrum Communication System[J]. International Business Research, 2007, 47(1): 97-99 |
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| Authors: | HU Jian-qiang ZHANG Feng-xi ZHAO Hang-sheng |
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| Affiliation: | 1. The 63rd Institute of PLA General Staff, Nanjing 210007,China; 2. Unit 73686 of PLA,Nanjing 210014 ,China |
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| Abstract: | Using CORDIC algorithm to generate orthogonal local oscillator signal for digital down converter(DDC) in spread-spectrum communication system is introduced.With this algorithm,no much ROM resource is needed when producing cosine and sine values,and only iterative operation of shifting-bit and ADD is required.It can be realized easily on VLSI chip.A VLSI structure for realizing DDC is also given. |
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| Keywords: | spread - spectrum communication DDC CORDIC algorithm |
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