| 有限字长对自适应噪声对消器输出信噪比的限制 |
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| 引用本文： | 赵淑清. 有限字长对自适应噪声对消器输出信噪比的限制[J]. 电子与信息学报, 1992, 14(2): 203-207. |
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| 作者姓名： | 赵淑清 |
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| 作者单位： | 哈尔滨工业大学无线电工程系 哈尔滨 |
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| 摘 要： | 本文讨论了LMS自适应噪声对消器的有限字长效应。推导了包括量化噪声和截断噪声的输出信噪比的理论公式。如果某个量化字长能反映出输出弱信号的变化,输出信噪比主要取决于自适应运算的字长。
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| 关 键 词： | 自适应滤波器 自适应噪声对消器 量化噪声 |
| 收稿时间： | 1990-04-27 |
| 修稿时间： | 1991-09-26 |
THE RESTRICTION ON OUTPUT SNR BY FINITE WORD LENGTH IN ADAPTIVE NOISE CANCELLER |
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| Zhao Shuqing. THE RESTRICTION ON OUTPUT SNR BY FINITE WORD LENGTH IN ADAPTIVE NOISE CANCELLER[J]. Journal of Electronics & Information Technology, 1992, 14(2): 203-207. |
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| Authors: | Zhao Shuqing |
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| Affiliation: | Harbin Institute of Technology Harbin 170006 |
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| Abstract: | The effects of finite word length in LMS adaptive noise canceller are discussed. The theoretical formula of output signal-to-noise ratio involving quantization noise and round-off noise are derived. If the variation of input weak signal can be reflected by certain word length, the output SNR mainly depends on the word length of adaptive operations. |
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| Keywords: | Adaptive filter Adaptive noise canceller Quantization noise |
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