| 一种新的直序列长伪码捕获方案 |
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| 引用本文： | 董渊文,官洪运,胡辉.一种新的直序列长伪码捕获方案[J].江南大学学报(自然科学版),2007,6(2):212-215. |
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| 作者姓名： | 董渊文 官洪运 胡辉 |
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| 作者单位： | 东华大学,信息学院,上海,200233 |
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| 摘 要： | 针对长序列伪码捕获的特点要求,对传统的序列估计伪码捕获方法进行改进,提出了差分序列估计伪码捕获算法和FFT频率校正技术相结合的方法作为长伪码的捕获方案,对其工作原理进行了分析和理论推导.仿真结果表明,在高斯白噪声的情况下,该方法在捕获长序列伪码时的性能与传统的序列估计法相比较,在较低信噪比的情况下有较大提高,并能适应10 kHz范围的多普勒频移环境.
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| 关 键 词： | 码捕获 序列估计法 FFT校频 扩频通信 |
| 文章编号： | 1671-7147（2007）02-0212-04 |
| 收稿时间： | 2005-11-25 |
| 修稿时间： | 2005-11-252006-02-10 |
A New DSSS Long PN Code Acquisition Algorithm |
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| DONG Yuan-wen,GUAN Hong-yun,HU Hui.A New DSSS Long PN Code Acquisition Algorithm[J].Journal of Southern Yangtze University:Natural Science Edition,2007,6(2):212-215. |
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| Authors: | DONG Yuan-wen GUAN Hong-yun HU Hui |
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| Institution: | College of Information, Donghua University, Shanghai 200233, China |
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| Abstract: | Pseudo noise code acquisition algorithms are the core algorithms in spread-spectrum communication.The long PN code acquisition algorithms is the hot research point.We simply introduce their principle and advance a method which combines with differential sequential acquisition algorithm and FFT frequency adjustment algorithm.The simulation result indicates that the method is better than some traditional methods in the field of high dynamic environment and long pseudo noise code sequence in some way. |
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| Keywords: | PN code acquisition sequential acquisition algorithm FFT frequency adjustment spread-spectrum communication |
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