Dynamic decode-and-forward relaying with rate-compatible LDPC convolutional codes
2012 (English)In: 5th International Symposium on Communications Control and Signal Processing, ISCCSP 2012, IEEE , 2012, 6217841- p.Conference paper (Refereed)
Dynamic decode-and-forward (DDF) is an improved decode-and-forward (DF) protocol under which the relay decides based on its received channel-state information (CSI) when to switch from listening mode to transmission mode without knowing the CSI of other links. In this paper we propose to apply rate-compatible LDPC convolutional (RC-LDPCC) codes to the DDF relay channel. The RC-LDPCC codes are constructed by successive graph extensions, and they have been proved analytically to be capacity achieving over the binary erasure channel. In this paper we show that the RC-LDPCC codes fit well with the DDF relaying, and the regularity of degree distributions simplifies the code optimization. Numerical results in terms of bit erasure rate and achievable rate are provided to evaluate the performance of the system. The results show that the RC-LDPCC codes are able to provide high achievable rates for the DDF relay channel.
Place, publisher, year, edition, pages
IEEE , 2012. 6217841- p.
Binary erasure channel, Code optimization, Decode-and-forward, Decode-and-forward protocols, Decode-and-forward relaying, Degree distributions, LDPC convolutional codes, Numerical results, Rate-compatible, Relay channels, Transmission mode
IdentifiersURN: urn:nbn:se:kth:diva-72118DOI: 10.1109/ISCCSP.2012.6217841ScopusID: 2-s2.0-84864127255ISBN: 978-146730276-0OAI: oai:DiVA.org:kth-72118DiVA: diva2:487199
5th International Symposium on Communications Control and Signal Processing, ISCCSP 2012; Rome; 2 May 2012 through 4 May 2012
FunderICT - The Next Generation
QC 201208312012-01-312012-01-312013-09-16Bibliographically approved