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ZHANG Hai-ying, YUAN Chao-wei. Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(6): 820-825. doi: 10.3969/j.issn.1001-0548.2010.06.004
Citation: ZHANG Hai-ying, YUAN Chao-wei. Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(6): 820-825. doi: 10.3969/j.issn.1001-0548.2010.06.004
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Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing

doi: 10.3969/j.issn.1001-0548.2010.06.004
  • 1.

    China Electronics Technology Group Corporation No.54th Research Institute Shijiazhuang 050081;

  • 2.

    Institute of Information and Communication,Beijing University of Posts and Telecommunications Haidian Beijing 100876

  • Received Date: 2009-06-10
  • Rev Recd Date: 2009-11-20
  • Publish Date: 2010-12-15
  • A blind method for symbol rate estimation of MPSK/MQAM signals by using the nonlinear process is presented. Utilizing the phase changing between inter-symbols and through the nonlinear transforming of zero IF signals, the spectral lines corresponding to the symbol rate can be extracted. The fourth-order cumulant is used for suppressing the strong background noise of symbol rate spectral lines in this paper. This method is robust to Gaussian noise and can achieve good estimation results with lower SNR. At the same time, it has lower computational complexity and is applicable to different shaping filters and different modulation orders of MPSK/MQAM signals.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing

doi: 10.3969/j.issn.1001-0548.2010.06.004
  • 1. China Electronics Technology Group Corporation No.54th Research Institute Shijiazhuang 050081;
  • 2. Institute of Information and Communication,Beijing University of Posts and Telecommunications Haidian Beijing 100876
  • Received Date: 2009-06-10
  • Rev Recd Date: 2009-11-20
  • Publish Date: 2010-12-15

Abstract: A blind method for symbol rate estimation of MPSK/MQAM signals by using the nonlinear process is presented. Utilizing the phase changing between inter-symbols and through the nonlinear transforming of zero IF signals, the spectral lines corresponding to the symbol rate can be extracted. The fourth-order cumulant is used for suppressing the strong background noise of symbol rate spectral lines in this paper. This method is robust to Gaussian noise and can achieve good estimation results with lower SNR. At the same time, it has lower computational complexity and is applicable to different shaping filters and different modulation orders of MPSK/MQAM signals.

ZHANG Hai-ying, YUAN Chao-wei. Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(6): 820-825. doi: 10.3969/j.issn.1001-0548.2010.06.004
Citation: ZHANG Hai-ying, YUAN Chao-wei. Blind Estimation of MPSK/MQAM Symbol Rate with Nonlinear Processing[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(6): 820-825. doi: 10.3969/j.issn.1001-0548.2010.06.004
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