通信信号数字调制方式自动识别算法研究
Automatic Digital Modulation Recognition Algorithm of Communication Signals
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摘要: 自动调制识别是非协调通信系统接收机设计中的重要研究课题,该文针对工程中的应用提出了一种调制识别算法。与已有的算法相比,该算法结构简单,计算量小,适合实时计算,而且在低信噪比环境下有较高的识别准确度;同时考虑了符号成形对参数提取的影响,更能满足工程上的需要。
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关键词:
- 符号成形; 瞬时参数提取; 调制方式识别
Abstract: Automatic modulation recognition is an important research area for the receiver design in the non-cooperative communication system. A digital modulation recognition algorithm is proposed in this paper for the engineering application. Contrast to other algorithm, this one is very simple to be calculated on-line and it also has a good recognition rate in the low SNR environment, furthermore the effect of symbol shape to the parameter extraction has been considered, which can satisfy the need of engineering. -
Yang Y, Soliman S S. Statistical moments based classifier for MPSK signal[J].Proc. GLOBECOM91, Phoenix, December.1991,vol. 1:72-[2]Antti-Veikko Rosti. Statistic methods in modulation classification.[Master of Science Thesis], Tampere University of Technology Department of Information Technology, 1998:39 - 46.[3]Liang Hong, Ho K C. Identification of digital modulation types using the wavelet transform. Proc. IEEE Military Commun. Conf.MILCOM99, New Jersey, October 1999:427 - 431.Mobasseri B G. Constellation shape as a robust signature for digital modulation recognition. Proc. IEEE Military Commun.Conf. MILCOM99, New Jersey, October 1999:442 - 446.[4]Ketterer H, Jondral F, Costa A H. Classification of modulation modes using tme-frequency methods. Proc. IEEE ICASSP-99,Phoenix, March 1999, vol.5:2471 - 2474.[5]Garder W A. Exploitation of spectral redundancy in cyclostationary signals. IEEE Signal Processing Magazine, 1991,8(2): 14 - 36.[6]Azzouz E E, Nandi A K. Automatic modulation recognition of communication signals. The Netherlands: Kluwer Academic Publishers, 1996:77 - 94.[7]胡广书.数字信号处理--理论、算法与实现.北京:清华大学出版社,2000:126-127. -
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