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Blind Recovery of the Second Convolutional Encoder of a Turbo-Code when Its Systematic Outputs Are Punctured

Mélanie Marazin 1 Roland Gautier 1 Gilles Burel 1
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
Abstract : Turbo-codes are error-correcting codes used in power­ful digital transmission systems to ensure a low binary error rate. This paper presents different approaches aimed at recovering a convolutional encoder in a non-cooperative context like in military interception or cognitive-radio applications. In this context, the intercepted data are the only known information. It also explains the residual inde­termination due to “equivalent” coders and it gives the link between an NRNSC encoder and its RSC equivalent form. Furthermore, it reports on a new approach developed to recover the interleaved version of the second encoder of a Turbo-code when its systematic outputs are punctured.
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https://hal.univ-brest.fr/hal-00395172
Contributor : Stéphane Azou <>
Submitted on : Monday, June 15, 2009 - 10:46:19 AM
Last modification on : Wednesday, June 24, 2020 - 4:19:23 PM

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  • HAL Id : hal-00395172, version 1

Citation

Mélanie Marazin, Roland Gautier, Gilles Burel. Blind Recovery of the Second Convolutional Encoder of a Turbo-Code when Its Systematic Outputs Are Punctured. Military Technical Academy Review, 2009, XIX (2), pp.213-232. ⟨hal-00395172⟩

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