| 未知调制阶数的MPSK信号信噪比估计算法 |
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| 引用本文： | 陈卫东,杨绍全,周希元.未知调制阶数的MPSK信号信噪比估计算法[J].系统工程与电子技术,2002,24(9):97-99. |
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| 作者姓名： | 陈卫东 杨绍全 周希元 |
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| 作者单位： | 1. 西安电子科技大学电子工程学院,陕西,西安,710071
2. 信息产业部电子第504所,河北,石家庄,050081 |
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| 摘 要： | 在未知MPSK信号调制阶数 ,未知接收码元序列条件下 ,提出一种基于高阶累量的可同时实现MPSK信号调制类型的初步分类和比较的精确的信噪比估计算法。计算机仿真结果表明 ,给定适当长度的观测数据 ,在很大的信噪比范围内 ,该算法可达到很高的估计精度。最后讨论了进一步提高信噪比估计精度的方法。
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| 关 键 词： | 信噪比估计 高阶累量 信号处理 |
| 文章编号： | 1001-506X(2002)09-0097-03 |
| 修稿时间： | 2001年6月1日 |
SNR Estimation Algorithm for MPSK Signals With Unknown Modulation Orders |
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| CHEN Wei-dong,YANG Shao-quan,ZHOU Xi-yuan.SNR Estimation Algorithm for MPSK Signals With Unknown Modulation Orders[J].System Engineering and Electronics,2002,24(9):97-99. |
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| Authors: | CHEN Wei-dong YANG Shao-quan ZHOU Xi-yuan |
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| Institution: | CHEN Wei-dong1,YANG Shao-quan1,ZHOU Xi-yuan2 |
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| Abstract: | A cumulants-based algorithm for estimating the signal-to-noise ratio (SNR) of MPSK signals is proposed on the assumption of unknown phase level orders and unknown symbol sequence of the MPSK signals in the received data. Computer simulation results show that, with adequately long received data, the proposed algorithm gives an accurate estimation in a rather wide input SNR range from 0dB to 25dB. Furthermore, the method to improve the estimation precision of the proposed algorithm is discussed. |
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| Keywords: | SNR estimation Higher order cumulants Signal processing |
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