| 基于脉宽调制技术的位同步 |
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| 引用本文： | 陈启兴,任国强,吴钦章. 基于脉宽调制技术的位同步[J]. 通信技术, 2008, 41(9) |
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| 作者姓名： | 陈启兴 任国强 吴钦章 |
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| 作者单位： | 1. 中国科学院光电技术研究所,四川,成都,610209;中国科学院研究生院,北京,1000391
2. 中国科学院光电技术研究所,四川,成都,610209 |
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| 摘 要： | 提出了一种用于数字通信的位同步方法,它是基于脉宽调制技术的间接插入导频法.推导了脉宽调制处理后信号的功率谱密度.试验结果表明,脉宽调制处理后的信号的功率谱密度中含有码元同步信号,基于脉宽调制技术的位同步方法不仅适合于双极性信号传输,还适合于单极性信号传输.该技术具有简洁、可靠的特点.
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| 关 键 词： | 脉宽调制 位同步 导频 功率谱密度 |
Symbol Synchronization Based on Pulse Width Modulation |
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| CHEN Qi-xing,REN Guo-qiang,WU Qin-zhang. Symbol Synchronization Based on Pulse Width Modulation[J]. Communications Technology, 2008, 41(9) |
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| Authors: | CHEN Qi-xing REN Guo-qiang WU Qin-zhang |
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| Affiliation: | CHEN Qi-xing,REN Guo-qiang,WU Qin-zhang(Institute of Optics , Electronics,China Academy of Sciences,Chengdu Sichuan 610209,China,Graduate School of China Academy of Sciences,Beijing 100039,China) |
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| Abstract: | A symbol synchronization method for digital communication is proposed, and it is a indirectly inserted pilot frequency based on pulse width modulation (PWM). The power spectrum density (PSD) of the signal processed by PWM technology is deduced. The experiment results show that the PSD contains symbol synchronization signal, the digital symbol synchronization based on PWM technology is acceptable for digital communication system, and its principle and realization is rather pithy. |
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| Keywords: | pulse width modulation (PWM) symbol synchronization pilot frequency power spectrum density (PSD) |
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