| 一种改进的载波同步Costas环路设计及实现 |
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| 引用本文： | 张安安,张长隆,韩方景,韩方剑.一种改进的载波同步Costas环路设计及实现[J].微处理机,2007,28(3):108-110,113. |
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| 作者姓名： | 张安安 张长隆 韩方景 韩方剑 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院,长沙,410073 |
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| 摘 要： | 提出了一种基于Cosms环（科思塔斯环）载波同步的改进环路，它具有可变环路增益和可变环路带宽。与传统的Cosms环相比，改进环路增加了频差估计、增益控制和环路锁定检测三个辅助电路。该方法能较好地处理环路带宽、稳态相位误差与环路增益之间的关系，在FPGA上已成功实现。
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| 关 键 词： | Costas环 改进环路 载波同步 FPGA实现 |
| 文章编号： | 1002-2279（2007）03-0108-03 |
| 修稿时间： | 2005-04-22 |
Improvement on Carrier Synchronizer Loop Based on Costas Loop and Its Implementation |
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| ZHANG An-an,ZHANG Chang-long,HAN Fang-jing,HAN Fang-jan.Improvement on Carrier Synchronizer Loop Based on Costas Loop and Its Implementation[J].Microprocessors,2007,28(3):108-110,113. |
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| Authors: | ZHANG An-an ZHANG Chang-long HAN Fang-jing HAN Fang-jan |
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| Affiliation: | College of Electronic Science and Engineering ,National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | In this paper,a new carrier synchronizer loop with variable loop gain and loop bandwidth has been discussed.Compared with the traditional loop,three accessional circuits are employed:frequency offset estimate circuit,gain control circuit and loop status detector circuit.The relationship among loop bandwidth,steady-state jitter and loop gain can be well-handed.The new loop has been implemented on FPGA. |
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| Keywords: | Costas loop Improvement Carrier Synchronizer FPGA Implementation |
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