Change search
ReferencesLink to record
Permanent link

Direct link
Design of Multi-Edge-Type Bilayer-Expurgated LDPC Codes for Decode-and-Forward in Relay Channels
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-7182-9543
2011 (English)In: IEEE Transactions on Communications, ISSN 0090-6778, E-ISSN 1558-0857, Vol. 59, no 11, 2993-3006 p.Article in journal (Refereed) Published
Abstract [en]

We consider the design of bilayer-expurgated low-density parity-check (BE-LDPC) codes as part of a decode-and-forward protocol for use over the full-duplex relay channel. A new ensemble of codes, termed multi-edge-type bilayer-expurgated LDPC (MET-BE-LDPC) codes, is introduced where the BE-LDPC code design problem is transformed into the problem of optimizing the multinomials of a multi-edge-type LDPC code. We propose two design strategies for optimizing MET-BE-LDPC codes; the bilayer approach is preferred when the difference in SNR between the source-to-relay and the source-to-destination channels is small, while the bilayer approach with intermediate rates is preferred when this difference is large. In both proposed design strategies multi-edge-type density evolution is used for code optimization. The resulting MET-BE-LDPC codes exhibit improved threshold and bit-error-rate performance as compared to previously reported bilayer LDPC codes.

Place, publisher, year, edition, pages
2011. Vol. 59, no 11, 2993-3006 p.
Keyword [en]
Multi-edge type LDPC codes, bilayer LDPC codes, density evolution, decode-and-forward, relay channel
National Category
URN: urn:nbn:se:kth:diva-55254DOI: 10.1109/TCOMM.2011.100411.100286ISI: 000297589000012ScopusID: 2-s2.0-82455167947OAI: diva2:471511
EU, European Research Council, FP7/2007-2013 228044Swedish Research Council, 621-2009-4666
QC 20120102Available from: 2012-01-02 Created: 2012-01-02 Last updated: 2012-03-29Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Rasmussen, Lars Kildehöj
By organisation
Communication TheoryACCESS Linnaeus Centre
In the same journal
IEEE Transactions on Communications

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 40 hits
ReferencesLink to record
Permanent link

Direct link