| 直扩通信中窄带干扰抑制的边带相关置换算法 |
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| 引用本文： | 张晓林, 郭黎利. 直扩通信中窄带干扰抑制的边带相关置换算法[J]. 电子与信息学报, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805 |
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| 作者姓名： | 张晓林 郭黎利 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001;哈尔滨工程大学信息与通信工程学院,哈尔滨,150001 |
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| 基金项目： | 高等学校博士学科点专项科研项目 , 国家无线电监测中心立项项目 |
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| 摘 要： | 论文提出了一种新的窄带干扰抑制算法，基于信号边带相关性的边带相关置换算法，通过计算接收信号频谱的边带相关函数确定载频和干扰中心频率，然后利用直扩信号频谱的对称性，用相对于窄带干扰的边带对称值代替干扰值达到消除干扰的目的。该算法对频谱具有对称性的调制方式都适用。计算机仿真结果表明边带相关置换算法的性能要优于变换域干扰置零的常规算法。
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| 关 键 词： | 窄带干扰 抑制 边带相关置换 直扩通信 |
| 文章编号： | 1009-5896（2008）01-0086-03 |
| 收稿时间： | 2006-06-12 |
| 修稿时间： | 2006-11-20 |
Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm |
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| Zhang Xiao-lin, Guo Li-li. Narrow-band Interference Suppression in DSSS by Side Correlation Replacement Algorithm[J]. Journal of Electronics & Information Technology, 2008, 30(1): 86-88. doi: 10.3724/SP.J.1146.2006.00805 |
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| Authors: | Zhang Xiao-lin Guo Li-li |
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| Affiliation: | School of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | In direct sequence spread spectrum narrow-band interference suppression is one of the difficult tasks in signal processing. This paper proposes a new narrow-band interference suppression algorithm called side correlation replacement algorithm based on side band correlation of signal. The signal carrier and center frequency of narrow interference are fixed on by calculating the side correlation function. Then narrow-band interference is eliminated when it is replaced by side correlation value. This algorithm is good for all modulation whose spectrum is symmetry. Computer simulation results demonstrate that the algorithm is more effective than transform domain interference returns zero. |
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| Keywords: | NBI Suppression Side correlation replacement (SCR) DS communication |
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