| 单稳态系统应用于加性高斯白噪声信号检测 |
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| 引用本文： | 徐寒松.单稳态系统应用于加性高斯白噪声信号检测[J].吉林大学学报(工学版),2007,37(1):182-187. |
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| 作者姓名： | 徐寒松 |
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| 作者单位： | 浙江大学,机械能源学院,杭州,310027 |
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| 摘 要： | 在加性高斯白噪声信号检测中,在采样周期极小或接近理想的情况下,连有匹配滤波器的检测电路是最佳的。如果匹配滤波器的采样周期没有达到理想情况,则在它之前连一个双稳势的非线性系统,然后选择合适的参数使此系统始终处于单稳态,再对二进制或多进制码元信号进行检测,即使采样周期变化程度较大,检测性能也会得到显著的改善。另外还导出了单稳态系统性能的理论公式。
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| 关 键 词： | 信息处理技术 信号 误比特率 单稳态 匹配滤波器 相关性 |
| 文章编号： | 1671-5497（2007）01-0182-06 |
| 收稿时间： | 2006-04-21 |
| 修稿时间： | 2006年4月21日 |
Signal detection in AGWN by using single stable state system |
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| Xu Han-song.Signal detection in AGWN by using single stable state system[J].Journal of Jilin University:Eng and Technol Ed,2007,37(1):182-187. |
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| Authors: | Xu Han-song |
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| Affiliation: | College of Mechanical and Energy Engineering ,Zhejiang University, Hangzhou 310027 ,China |
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| Abstract: | When sampling period is very low or close to ideal case for signal detection in additive Gaussian white noise(AGWN),the detection circuit with matched filter is optimal.Otherwise,a bi-stable nonlinear system can be connected to the matched filter,and by adjusting the system parameters,the system will keep in single state for the detection of binary or multi-nary code,so that the detection performance can be remarkably improved in a wide range of sampling period.In addition,a theoretical formula of the system performance was derived. |
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| Keywords: | information technology signal bit error rate single stable state matched filter correlation |
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