| 宽带HFC网络回传通路输入噪声抑制的研究 |
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| 引用本文： | 景新幸,阎瑛,周萍. 宽带HFC网络回传通路输入噪声抑制的研究[J]. 信号处理, 2001, 17(3): 218-221 |
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| 作者姓名： | 景新幸 阎瑛 周萍 |
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| 作者单位： | 华中科技大学桂林电子工业学院 |
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| 摘 要： | 在HFC网络回传通路各类噪声中,输入噪声占有相当大的比重.本文将输入噪声抽象为一种窄带干扰,从数字信号处理的角度对其采取非线性抑制措施,并把归一化FTF算法运用到了该干扰抑制器中,提高了信号处理的实时性.在QPSK调制系统下仿真看到其信噪比和误码率改善都很可观.
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| 关 键 词： | HFC回传系统 输入噪声 非线性 FTF算法 |
Study on Suppressing Noise on Upstream Channel in HFC Network |
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| Jing Xinxing Yan Ying Zhou Ping. Study on Suppressing Noise on Upstream Channel in HFC Network[J]. Signal Processing(China), 2001, 17(3): 218-221 |
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| Authors: | Jing Xinxing Yan Ying Zhou Ping |
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| Affiliation: | Huazhong University of Science and Technology Guilin University of Electronic Technology |
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| Abstract: | Ingress noise has great proportion in sorts of noise on upstream channel in HFC. This paper abstracts the ingress noise into a narrowband interference and takes a nonlinear suppression measure from the point of signal processing. Gained normal FTF algorithm is applied to the narrowband interference suppresser, which improves the real-time ability of system. The SNR improvement and code error probability reduce are considerable in QPSK modem system. |
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| Keywords: | HFC upstream channel ingress noise nonlinear FTF algorithm |
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