| 直接序列扩频通信中基于干扰循环平稳模型的抗单音干扰算法 |
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| 引用本文： | 龚向阳,胡光锐.直接序列扩频通信中基于干扰循环平稳模型的抗单音干扰算法[J].上海交通大学学报,2002,36(6):803-806. |
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| 作者姓名： | 龚向阳 胡光锐 |
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| 作者单位： | 上海交通大学,电子工程系,上海,200030 |
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| 基金项目： | 国防重点实验室基金资助项目 (99JS 63 .3 .1.JW0 3 0 1) |
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| 摘 要： | 单音干扰是扩频通信系统中的一种常见干扰，系统解扩前引入抗单音干扰算法能够有效抑制单音干扰，提高系统性能，由于扩频序列的周期性，使得扩频信号表现出循环平衡特性，同时单音干扰模型中正弦函的周期性，使得单音干扰也是循环平衡信号，文中基于扩频信号及干扰循环平衡特性，提出了一种新的抗干扰算法，实验证明，该算法能有效地提高扩频通信系统抗单音干扰性能。
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| 关 键 词： | 直接序列扩频通信 抗单音干扰算法 循环平衡信号 干扰抑制 干扰循环平衡模型 伪随机序列 |
| 文章编号： | 1006-2467(2002)06-0803-04 |
| 修稿时间： | 2001年6月22日 |
Interference Rejection Based on Cyclostationary Model of Single-Tone Interference in DSSS Communication Systems |
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| GONG Xiang yang,HU Guang rui.Interference Rejection Based on Cyclostationary Model of Single-Tone Interference in DSSS Communication Systems[J].Journal of Shanghai Jiaotong University,2002,36(6):803-806. |
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| Authors: | GONG Xiang yang HU Guang rui |
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| Abstract: | A system with a certain processing gain has a certain interference allowance. When the interference intensity exceeds the allowance, the system performance degrades rapidly. The narrowband interference rejection capability of a DSSS system can be enhanced considerably by an interference rejection algorithm prior to correlating it with the Pseudo Noise (PN) sequence. The periodicity of PN sequence and the sine function in the single tone interference model make them cyclostationary respectively. In this article, the SS signal and interference were modeled as cyclostationary. Compared with the stationary model, it can preserve more information. Based on cyclostationary model, a new interference rejection approach was introduced. The simulation shows that this algorithm can improve the system performance considerablely. |
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| Keywords: | spread spectrum cyclostationarity interference rejection |
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