| QPSK基带数字相干解调的载波提取 |
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| 引用本文： | 陈教芳.QPSK基带数字相干解调的载波提取[J].电子与信息学报,1991,13(5):544-547. |
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| 作者姓名： | 陈教芳 |
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| 作者单位： | 中国科学院电子学研究所 北京 |
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| 摘 要： | 本文介绍了基带数字相干解调的载波恢复锁相环的结构原理,并对其进行了性能分析。与四倍频方法比较,在相同条件下,前者比后者环路信噪比高5--10dB。实验结果表明,恢复的载波稳定性良好。
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| 关 键 词： | 数字通信 相干解调 锁相环 |
| 收稿时间： | 1990-4-9 |
| 修稿时间： | 1990-9-17 |
CARRIER EXTRACTION OF QPSK BASEBAND DIGITAL DEMODULATION |
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| Chen Jiaofang.CARRIER EXTRACTION OF QPSK BASEBAND DIGITAL DEMODULATION[J].Journal of Electronics & Information Technology,1991,13(5):544-547. |
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| Authors: | Chen Jiaofang |
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| Institution: | Institute of Electronics Academia Sinica Beijing |
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| Abstract: | The principle and structure of the carrier recovery PLL of baseband digl-tal coherent demodulation are presented, and the performance of this PLL is analysed. Comparing with the "four times frequency" method under the same conditions, the signal to noise ratio of this PLL is 5-10dB higher. The experimenta! results show that the recovered carrier is stable. |
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| Keywords: | Digital communication Coherent demodulation Phase-lock loop |
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