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Blind reconnaissance of the pseudo-random sequence in DS/SS signal with negative SNR

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Abstract

This paper introduces a new theory and algorithm that can be used in blind detection of the carrier wave signal and the pseudo-random sequence of the direct sequence spread spectrum (DS/SS) signal with negative SNR. First, without any a priori knowledge of the DS/SS signal, the carrier wave signal can be detected from DS/SS signal with negative SNR by using stochastic differential equations and energy detection method. Based on this, the pseudo-random sequence can also be blindly detected in DS/SS signal with negative SNR by reducing noise of the nonlinear signal and the algorithm of wavelet multiscale decomposition algorithm. Finally, the computer simulation shows that we can detect the carrier wave signal with SNR=−27 dB and the pseudo-random sequence under error code ratio 10−4 with SNR=−10 dB.

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Authors and Affiliations

  1. School of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu, 6100541, China

    Huang XianGao

  2. Computer Center, Chang’an University, Xi’an, 710064, China

    Huang Wei

  3. Research Institute of Electronic, ZhongXing, Xi’an, 710061, China

    Wang Chao

  4. Southwest China Institute of Electronic Technology, Chengdu, 610036, China

    Lü ZeJun

  5. College of Engineering, Shantou University, Shantou, 515063, China

    Huang XianGao & Hu YanHua

Authors
  1. Huang XianGao
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  2. Huang Wei
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  3. Wang Chao
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  4. Lü ZeJun
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  5. Hu YanHua
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Corresponding author

Correspondence to Huang XianGao.

Additional information

Supported by the National Defence Key Foundation of China (Grant No. 614144)

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Huang, X., Huang, W., Wang, C. et al. Blind reconnaissance of the pseudo-random sequence in DS/SS signal with negative SNR. SCI CHINA SER F 50, 510–520 (2007). https://doi.org/10.1007/s11432-007-0039-0

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  • DOI: https://doi.org/10.1007/s11432-007-0039-0

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