| QPSK载波同步算法研究及FPGA实现 |
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| 引用本文： | 赵秋明,孙志磊,欧阳宁.QPSK载波同步算法研究及FPGA实现[J].电视技术,2012,36(11):100-103. |
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| 作者姓名： | 赵秋明 孙志磊 欧阳宁 |
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| 作者单位： | 桂林电子科技大学认知无线电与信息处理实验室,广西桂林,541000 |
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| 基金项目： | 广西无线宽带通信与信号处理重点实验室主任基金 |
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| 摘 要： | 研究了基于工程应用的四相松尾环实现QPSK载波恢复算法、并分析了噪声对该算法的影响及该算法在FPGA上的实现。通过对锁相环分析,详细介绍了松尾环和环路滤波器的工作原理,并分别给出了System Generator的实现方法。实验结果表明使用松尾环能够在小信噪比情况下很好的实现载波同步,并且该种算法还能很容易的推广到MPSK载波恢复环路中。
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| 关 键 词： | 正交相移键控 环路滤波器 载波同步 System Generator FPGA |
Research and Implementation of QPSK Carrier Synchronization Algorithm Based on FPGA |
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| ZHAO Qiuming
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SUN Zhilei
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OUYANG Ning.Research and Implementation of QPSK Carrier Synchronization Algorithm Based on FPGA[J].Tv Engineering,2012,36(11):100-103. |
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| Authors: | ZHAO Qiuming SUN Zhilei OUYANG Ning |
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| Institution: | (Key Laboratory on Cognitive Radio and Information Processing,Gunlin University of Electronic Technology,Guangxi Guilin 541000,China) |
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| Abstract: | A QPSK carrier recovery loop algorithm based on the engineering application of four-phase Matsuo loop is researched in this paper.This algorithm which influenced by noise is analyzed and implemented on FPGA.The working principle of Matsuo loop and loop filter is described by the analysis of PLL in detail,and the System Generator implementation methods are given in this paper.Experimental results show that this loop can be implemented well the carrier synchronization in low SNR,and the algorithms can be easily used carrier synchronization loop in MPSK. |
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| Keywords: | QPSK loop filter carrier synchronization System Generator FPGA |
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