| 基于小波包的变换域通信系统窄带干扰抑制技术 |
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| 引用本文： | 赵艳,张兴周,缪善林.基于小波包的变换域通信系统窄带干扰抑制技术[J].应用科技,2007,34(2):13-16. |
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| 作者姓名： | 赵艳 张兴周 缪善林 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 为了使变换域通信系统(TDCS)能够对窄带干扰频率进行精确定位,提高生成的基函数的频带利用率,提出了一种基于小波包变换的基函数生成方法.该方法采用树结构算法对信号进行分解,准确判断出窄带干扰的频率位置,改善了有用频带被过多剔除的情况.仿真结果表明,采用该方法的变换域通信系统比采用其他方法的变换域通信系统具有更强的干扰抑制能力和更好的自适应性.
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| 关 键 词： | 变换域 窄带干扰 小波包变换 基函数 |
| 文章编号： | 1009-671X（2007）02-0013-04 |
| 收稿时间： | 2006-06-12 |
| 修稿时间： | 2006-06-12 |
Technology of narrow-band interference suppression in transform domain communication system based on wavelet packet |
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| ZHAO Yan,ZHANG Xing-zhou,MIAO Shan-lin.Technology of narrow-band interference suppression in transform domain communication system based on wavelet packet[J].Applied Science and Technology,2007,34(2):13-16. |
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| Authors: | ZHAO Yan ZHANG Xing-zhou MIAO Shan-lin |
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| Institution: | College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | In order to accurately determine the narrow width interference freguency and raise the usage rate of generated basis function with transform domain communication system(TDCS),a method for generation of basis function is proposed based on wavelet packet transformation.By using tree structure algorithm(TSA) to decompose signals,this method can accurately determine the position of interference frequency,improving the useful bands from being rejected.Simulation shows that TDCS in this method possesses stronger capability to suppress interference and better adaptability than TDCS in other methods. |
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| Keywords: | transform domain narrow-band interference wavelet packet transformation basis function |
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