| 宽带HFC中16QAM窄带噪声抑制的研究 |
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| 引用本文： | 景新幸,金奕丹,刘贤德.宽带HFC中16QAM窄带噪声抑制的研究[J].华中科技大学学报(自然科学版),2004,32(4):99-101. |
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| 作者姓名： | 景新幸 金奕丹 刘贤德 |
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| 作者单位： | 华中科技大学光电子工程系,湖北,武汉,430074;桂林电子工业学院通信与信息工程系,广西桂林,541004;桂林电子工业学院通信与信息工程系,广西桂林,541004;华中科技大学光电子工程系,湖北,武汉,430074 |
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| 基金项目： | 广西壮族自治区自然科学基金资助项目 (桂科自 0 2 2 90 5 3) |
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| 摘 要： | 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，并把非线性的CDLMS，CDRLS和归一化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。
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| 关 键 词： | HFC回传系统 窄带噪声 非线性 16QAM FTF算法 |
| 文章编号： | 1671-4512(2004)04-0099-03 |
| 修稿时间： | 2002年11月27 |
Study of suppressing noise on upstream channel in HFC network |
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| Jing Xinxing Jin Yindan Liu Xiande Doctoral Candidate., Dept. of Optoelectronic Engineering,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..Study of suppressing noise on upstream channel in HFC network[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2004,32(4):99-101. |
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| Authors: | Jing Xinxing Jin Yindan Liu Xiande Doctoral Candidate Dept of Optoelectronic Engineering Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Jing Xinxing Jin Yindan Liu Xiande Doctoral Candidate., Dept. of Optoelectronic Engineering,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | A model of narrowband interference was abstracted from the ingress noise and a nonlinear suppression measurement was taken from the point of signal processing. Nonlinear CDLMS (complex decision-directed LMS),CDRLS (complex decision-directed RLS) and FTF algorithm were applied to the interference suppresser. They can improve the real-time property of signal processing. Simulative results showed that it improved SNR and code error probability in 16QAM modem system. |
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| Keywords: | HFC upstream channel narrowband interference nonlinear 16QAM FTF algorithm |
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