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Blind estimation of block interleaver length and encoder parameters

Roland Gautier 1, * Gilles Burel 1 Mélanie Marazin 1 Crépin Nsiala-Nzéza 2
* Corresponding author
1 Lab-STICC_UBO_CACS_COM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
2 INRETS - Institut National de Recherche sur les Transports et leur Sécurité
Abstract : Interleavers are key devices in most digital transmission systems. An approach for blind estimation of the interleaver length, as well as the encoder rate and constraint length, is proposed in this paper. The approach is based on linear algebra. We show that the rank of a matrix built from the intercepted interleaved stream falls when the number of rows of this matrix is a multiple of the interleaver length. Furthermore, the values of the ranks allow to estimate the encoder rate and constraint length. Typical applications are transmission surveillance and self-recovering receivers.
Keywords : interception cognitive-radio applications convolutional encoder interleaver blind estimation non-cooperative communications interception.
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Journal articles
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https://hal.univ-brest.fr/hal-00666168
Contributor : Roland Gautier <>
Submitted on : Friday, February 3, 2012 - 3:56:20 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:23 PM

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  • HAL Id : hal-00666168, version 1

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INSTITUT-TELECOM | LAB-STICC_UBO | CNRS | UNIV-BREST | IFSTTAR | ENIB | LAB-STICC_ENIB | LAB-STICC | IBNM

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Roland Gautier, Gilles Burel, Mélanie Marazin, Crépin Nsiala-Nzéza. Blind estimation of block interleaver length and encoder parameters. Military Technical Academy Review, 2011, XXI (1), pp.31-43. ⟨hal-00666168⟩

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