NDLI: Low complexity coded cooperation scheme using non binary LDPC codes

Content Provider	IEEE Xplore Digital Library
Author	Ganepola, V.S. Carrasco, R.A. Wassell, I.J.
Copyright Year	2009
Description	Author affiliation: Computer Laboratory, University of Cambridge, UK (Wassell, I.J.) \|\| School of Electrical, Electronic and Computer Engineering, Newcastle University, Newcastle Upon Tyne, UK (Ganepola, V.S.; Carrasco, R.A.)
Abstract	In this paper we present a coded cooperation scheme using non binary LDPC codes and show how it can be used in a multi-user environment to achieve full transmit diversity. It is well known that non-binary LDPC codes over GF(q) outperform binary LDPC codes, but at a cost of increased decoding complexity. To ensure that this scheme can be practically implemented, we demonstrate how the Belief Propagation (BP) algorithm can be simplified, with a complexity dependent only on the row weight of the parity check matrix and independent of the finite field size. We show that this decoding algorithm has only a small degradation in performance compared with BP decoding on quasi-static fading channels and present the performance of a coded cooperation scheme using non-binary LDPC codes defined in GF(4) and GF(16).
Starting Page	742
Ending Page	746
File Size	222472
Page Count	5
File Format	PDF
ISBN	9781424440665
DOI	10.1109/WIRELESSVITAE.2009.5172541
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-17
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Protocols Costs AWGN Coded cooperation Cooperative communication LDPC Decoding Relays Galois fields Quasi-static fading Degradation Reduced complexity Sub-optimal decoding Decode-and-forward Parity check codes Non-binary Belief propagation
Content Type	Text
Resource Type	Article

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