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EXIT functions for randomly punctured systematic codes
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9307-484X
2007 (English)In: 2007 IEEE INFORMATION THEORY WORKSHOP, NEW YORK: IEEE , 2007, 24-29 p.Conference paper (Refereed)
Abstract [en]

In this paper, the extrinsic information transfer (EXIT) functions of randomly punctured systematic codes (RP-SCs) are analyzed. We consider the systematic encoder to consist of a non-systematic code (NC) and a parallel path for the systematic bits; puncturing of the systematic and the parity bits is then carried out separately. We show that the decoding model for measuring the EXIT characteristics of a RP-SC can be transformed into a decoding model of the underlying NC. For the special case where the a priori/communication channels are modeled by binary erasure channels, it becomes obvious that the EXIT functions of any RP-SC can be analytically derived from the EXIT functions of the underlying NC. This theoretical result is verified by a comparison to simulated EXIT functions.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2007. 24-29 p.
National Category
Computer Engineering
URN: urn:nbn:se:kth:diva-28979DOI: 10.1109/ITW.2007.4313044ISI: 000253441300005ScopusID: 2-s2.0-46749117261OAI: diva2:396550
IEEE Information Theory Workshop, Tahoe City, CA, SEP 02-06, 2007

QC 20110210

Available from: 2011-02-10 Created: 2011-01-25 Last updated: 2016-05-12Bibliographically approved

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Thobaben, Ragnar
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