| 一种QPSK突发信号的信噪比估计方法 |
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| 引用本文： | 李辉,吴争.一种QPSK突发信号的信噪比估计方法[J].无线电工程,2007,37(9):26-27,50. |
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| 作者姓名： | 李辉 吴争 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 介绍了几种信噪比的估计方法,对这些估计方法的性能做了比较,得到了一种适合于QPSK突发信号信噪比估计的方法,并介绍了其FPGA实现。所采用的信噪比估计方法利用训练序列的相关峰值和能量值进行运算,从而得到估计的信噪比。通过MATLAB仿真和硬件实现表明,利用较短的训练序列就可以得到范围较宽、准确度较高的信噪比估计值,其应用可扩展到其他类似突发通信系统中。
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| 关 键 词： | 信噪比估计 数据辅助 FPGA TDMA |
| 文章编号： | 1003-3106（2007）09-0026-02 |
| 修稿时间： | 2007-03-21 |
A SNR Estimation Method for QPSK Burst Signals |
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| LI Hui,WU Zheng.A SNR Estimation Method for QPSK Burst Signals[J].Radio Engineering of China,2007,37(9):26-27,50. |
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| Authors: | LI Hui WU Zheng |
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| Affiliation: | The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China |
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| Abstract: | Several methods for SNR estimation are introduced, and an appropriate method suitable for SNR estimation of QPSK burst signal is obtained by a comparison of the performances of these methods. The FPGA implementation of the method is also introduced~ This method uses the correlative peak and energy value of training sequence for calculation, and gets the estimated SNR. The simulation with MATLAB and the hardware implementation show that the estimated SNR has a wide range and the accuracy is acceptable~ Its application can be expanded to other similar burst communication systems. |
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| Keywords: | FPGA TDMA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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