[1]张端金,吕书允..OFDM信道下数字调相信号的调制识别[J].郑州大学学报(工学版),2013,34(02):60-63.[doi:10.3969/j. issn.1671 -6833.2013.00.016]
ZHANG Duan-jin,LV Shu-yun.Modulation Classification of MPSK Based on OFDM Channel System[J].Journal of Zhengzhou University (Engineering Science),2013,34(02):60-63.[doi:10.3969/j. issn.1671 -6833.2013.00.016]
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OFDM信道下数字调相信号的调制识别(
)
《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]
- 卷:
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34
- 期数:
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2013年02期
- 页码:
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60-63
- 栏目:
-
- 出版日期:
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2013-03-28
文章信息/Info
- Title:
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Modulation Classification of MPSK Based on OFDM Channel System
- 作者:
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张端金; 吕书允.
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郑州大学信息工程学院,河南郑州,450001, 郑州大学信息工程学院,河南郑州,450001
- Author(s):
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ZHANG Duan-jin; LV Shu-yun
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School of Information Engineering,Zhengzhou University ,Zhengzhou 450001 , China
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- 关键词:
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OFDM信道; 调制识别; 高阶累量; MPSK信号
- Keywords:
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OFDM system ; modulation classification; high-order cumulant; MPSK signal
- 分类号:
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TN911.23
- DOI:
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10.3969/j. issn.1671 -6833.2013.00.016
- 文献标志码:
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A
- 摘要:
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研究OFDM信道系统下的MPSK调制方式,对其二阶累量和四阶累量进行推导和分析,给出一种针对MPSK调制阶数进行识别的新特征构造方法,新特征提取方法简单,而且容易实现,能够有效实现调制识别目的.笔者分别对OFDM系统传输系统性能和识别率进行了计算机仿真,把基于高阶累量的调制识别算法的识别率与基于谱线特征算法的调制算法识别率做了仿真对比.仿真结果表明,在相同信噪比的情况下,基于高阶累量的调制识别算法要远远优于基于谱线特征的算法,当信噪比高于3 dB时,识别率可以达到100％.
- Abstract:
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This paper studies the modulation of MPSK based on OFDM channel system. by deduction and a-nalysis of the second-order cumulants and the fourth-order cumulants of MPSK signal An innovative feature todistinguish the modulation order of the MPSK is presented. This feature,due to its simple extracted approachand easy realization, can efficiently achieve the goal of modulation classification. The paper gives transmissionbit error rate and the modulation recognition rate of OFDM system,and gives a comparison simulation of theMPSK recognition rate between the modulation algorithm based on high-order cumulants and spectrum line fea-ture. The result shows that the advantage of high-order cumulants analysis.
更新日期/Last Update:
1900-01-01