| 半带脉冲成形滤波器设计及性能分析 |
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| 引用本文： | 郄志鹏,翟海涛,付永明,朱江.半带脉冲成形滤波器设计及性能分析[J].国防科技大学学报,2015,37(4):106-110. |
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| 作者姓名： | 郄志鹏 翟海涛 付永明 朱江 |
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| 作者单位： | 国防科技大学 电子科学与工程学院， 湖南 长沙 410073,国防科技大学 电子科学与工程学院， 湖南 长沙 410073,国防科技大学 电子科学与工程学院， 湖南 长沙 410073,国防科技大学 电子科学与工程学院， 湖南 长沙 410073 |
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| 基金项目： | 国家杰出青年科学基金;国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 为了减少调制带宽、抑制带外杂散,通信系统中通常在发射端设置脉冲成形滤波器,而为了获得最大信噪比,在接收端通常使用匹配滤波器。以半带滤波器为基础,利用多级级联方法,设计了一种新型的脉冲成形滤波器,通过最小、最大相位分解方法,使得滤波器便于在实际通信系统中的使用。仿真结果表明,设计的成形滤波器与升余弦滚降滤波器相比,通带起伏小,硬件资源耗费少,在低信噪比时对不同调制方式均有额外的功率增益。
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| 关 键 词： | 脉冲成形 匹配滤波 半带滤波器 最小相位 |
| 收稿时间： | 2014/9/30 0:00:00 |
Design and performance analysis of half-band pulse shaping filter |
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| XI Zhipeng,ZHAI Haitao,FU Yongming and ZHU Jiang.Design and performance analysis of half-band pulse shaping filter[J].Journal of National University of Defense Technology,2015,37(4):106-110. |
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| Authors: | XI Zhipeng ZHAI Haitao FU Yongming and ZHU Jiang |
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| Institution: | College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China and College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | People always set up a pulse shaping filter at the transmitter to reduce the modulation bandwidth and inhibit the out-of-band spurious, and make use of a matched filter at the receiver to obtain the maximum signal noise ratio. We design a cascaded multistage half-band shaping filter and use the minimum phase and maximum phase decomposition method, which facilitate the filter available in the practical communication system. The simulation result indicates that distinguished from the Raised Cosine FIR filter, the designed filter has many advantages: the pass-band with lower ups and downs, less cost on the hardware resource, and extra power gain at low SNR for different modulation. |
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| Keywords: | pulse shaping matched filtering half-band filter minimum phase |
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