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基于高阶累积量的多音并行调制信号检测研究

Detection of Multicarrier Modulation Based on Higher-Order Cumulants
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摘要 针对多音并行信号的调制识别问题,提出了一种基于四阶累积量的识别方法,用以识别特定通信协议下子载波调制样式为MPSK的多载波调制信号。该方法利用带通MPSK信号的累计量特征,在不考虑相位影响的情况下提出了该多音并行信号近似模型并通过理论计算和仿真验证此模型的正确性。然后利用此模型通过计算仿真找到子载波数与累计量参数的对应关系。根据这种对应关系提出识别算法并进行识别仿真,仿真结果表明在低信噪比(-5dB)下有很好的识别效果。 To identify modulation of multicarrier modulation(MCM) according to specifical communication protocols whose sub-carrier modualtion is MPSK,a method based on 4th-order cumulants is proposed.Without considering the influence of the phase,this method proposes a model of MCM using character of band-pass MPSK and proves its correctness through deduction and simulation.Then the relationship between number of subcarriers and cumulants is discovered through calculation and simulation.On the basis of the relationship,a recognition algorithm is proposed and simulated.The simulation results show high performance of identification when SNR(-5dB) is very low.
作者 谢奇 崔琛
出处 《计算机仿真》 CSCD 2008年第9期308-311,共4页 Computer Simulation
关键词 多音并行调制 四阶累积量 子载波个数 识别 Multicarrier modulation 4th-order cumulants Number of subcarrier Identification
作者简介 谢奇(1982-),男(汉族),安徽巢湖人,合肥电子工程学院硕士生,研究方向为多载波调制信号识别; 崔琛(1962-),男(汉族),河北人,合肥电子工程学院教授,研究方向为通信系统仿真。
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  • 1吕新正,魏平,肖先赐.利用高阶累积量实现数字调制信号的自动识别[J].电子对抗技术,2004,19(6):3-6. 被引量:42
  • 2Swami A, Sadler B M. Hierarchical digital modulation classification using cumulants [J]. IEEE Trans on communication, 2000,48, (3): 416-429.
  • 3张贤达.现代信号处理(第二版)[M].北京:清华大学出版社,2000..
  • 4Keller T, Hanzo L. Adaptive modulation techniques for duplex OFDM transmission[J]. IEEE Trans. on Veh. Technol. , 2000,49(5) : 1893- 1906.
  • 5Hanzo L, Wang C H, Yee M S. Adaptive wireless transceivers[M]. John Wiley & Sons, Ltd, 2002. 535-587.
  • 6Swami A, Sadler B M. Hierarchical digital modulation classification using cumulants[J ]. IEEE Trans. on Communications, 2000,48(3): 416- 429.
  • 7Nandi A K, Azzouz E E. Algorithms for automatic modulation recognition of communication signals[J ]. IEEE Trans. on Communications, 1998, 46(4) :431 - 436.
  • 8Wong M L D, Nandi A K. Automatic digital modulation recognition using spectral and statistical features with multi-layer perceptrons [C]. Proc. of the Sixth International Symposium on Signal Processing and its Applications, 2001, Ⅱ: 390 - 393.
  • 9Mobasseri B G. Digital modulation classification using constellation shape[J]. Signal Processing, 2000, 80(2) : 251 - 277.
  • 10Walter A. Detection of multi-carrier modulations using 4th-order cumulants[C]. Military Communications Conference Proceedigs ,1999, I: 432-436.

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