| 混沌时间序列降噪在数字通信中的一个应用 |
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| 引用本文： | 刘雄英,丘水生.混沌时间序列降噪在数字通信中的一个应用[J].电路与系统学报,2006,11(2):38-41,37. |
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| 作者姓名： | 刘雄英 丘水生 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640 |
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| 基金项目： | 广东省博士启动基金，华南理工大学校科研和教改项目，中国科学院资助项目 |
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| 摘 要： | 根据对非线性时间序列降噪的理论,本文采用Gradient Descent方法在CSK(Chaos shift Keying)系统的接收端对混沌时间序列进行降噪,获得一条比原来时间序列噪声更小的时间序列轨道,然后采用非相干检测技术对发射端传输的符号进行判断,理论分析和计算机仿真结果基本一致.
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| 关 键 词： | 梯度下降 降噪 非相干检测 非线性时间序列 |
| 文章编号： | 1007-0249（2006）02-0038-04 |
| 收稿时间： | 2003-12-04 |
| 修稿时间： | 2004-05-26 |
Application of chaotic time series noise reduction in chaos-based digital communication |
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| LIU Xiong-ying,QIU Shui-sheng.Application of chaotic time series noise reduction in chaos-based digital communication[J].Journal of Circuits and Systems,2006,11(2):38-41,37. |
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| Authors: | LIU Xiong-ying QIU Shui-sheng |
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| Abstract: | Chaotic signal is always contaminated by additive white gauss noise in the channel of digital communication. To enhance the performance of SNR, it is necessary to reduce noise in chaotic time series at the receiver. Based on the theories of nonlinear time series noise reduction, we apply a kind of noise reduction method based on gradient descent to CSK system, and get a less noised chaotic time series trajectory. Then we use noncoherent detection to determine the symbol that is sent by the transmitter, Computer simulation results agree with the analysis very well. |
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| Keywords: | gradient descent noise reduction noncoherent detection nonlinear time series |
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