| 基于锁相环法的载波提取 |
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| 引用本文： | 王智文,蔡启先,刘美珍.基于锁相环法的载波提取[J].广西工学院学报,2008,19(4):22-24. |
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| 作者姓名： | 王智文 蔡启先 刘美珍 |
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| 作者单位： | 广西工学院,计算机工程系,广西,柳州,545006 |
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| 基金项目： | 广西工学院自然科学基金项目
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| 摘 要： | 介绍了平方变换法相干解调原理，提出用平方锁相环法来实现从2DPSK信号中提取相干载波，解决了提取的载波信号存在180度的相位含糊问题，为通信系统提高抗噪性能提供了可靠的条件保证，并进行相应的仿真实验。
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| 关 键 词： | 锁相环 相位变化 相干解调 载波提取 |
Carrier synchronization based on PLL |
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| WANG Zhi-wen,CAI Qi-xian,LIU Mei-zhen.Carrier synchronization based on PLL[J].Journal of Guangxi University of Technology,2008,19(4):22-24. |
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| Authors: | WANG Zhi-wen CAI Qi-xian LIU Mei-zhen |
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| Affiliation: | WANG Zhi-wen,CAI Qi-xian,LIU Mei-zhen(Department of Computer Engineering,Guangxi University of Technology,Liuzhou 545006,China) |
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| Abstract: | Theory of coherent demodulation based on method of square counterchange is introduced. Square PLL is lodged to achieve coherent carrier from 2DPSK signal. The 180° phase＇ s implicit problem which exists in cartier recovery is resolved. It improves the resisting noise property of communication system. And the corresponding emulational experiment has been conducted. |
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| Keywords: | PLL phase variation coherent demodulation carrier recovery |
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