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Detection of Spread Spectrum Transmissions using fluctuations of correlation estimators

Abstract : A method for detection of a Direct-Sequence Spread Spectrum (DS-SS) communication hidden in the noise is pro-posed. Indeed, DS-SS signals are well-known for their low probability of interception: their statistics are similar to the statistics of a noise, and, furthermore, they are usually transmitted below the noise level. The proposed method is based on the fluctuations of autocorrelation estimators. We show that, when a DS-SS signal is hidden in the noise, these fluctuations increase. A theoretical analysis shows that detection is possible, even with very low signal to noise ratio at the detector input. Experimental results are provided to illustrate the approach. The method is also able to estimate the symbol period of the DS-SS signal.
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https://hal.univ-brest.fr/hal-03224069
Contributor : Gilles Burel Connect in order to contact the contributor
Submitted on : Tuesday, May 11, 2021 - 1:36:24 PM
Last modification on : Monday, October 11, 2021 - 2:22:09 PM

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  • HAL Id : hal-03224069, version 1

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Gilles Burel. Detection of Spread Spectrum Transmissions using fluctuations of correlation estimators. IEEE Int. Symp. on Intelligent Signal Processing and Communication Systems (ISPACS 2000), Nov 2000, Honolulu, Hawaï, United States. ⟨hal-03224069⟩

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