On distributed codes with noisy relays

In this paper, we address the design of distributed coding schemes for the 3-node relay channel with half-duplex constraint. We first discuss the general problem of optimally re-encoding noisy data at the relay and summarize recently proposed approximations. Based on an analysis of the extrinsic inf...

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Bibliographic Details
Published in:2008 42nd Asilomar Conference on Signals, Systems and Computers pp. 1010 - 1014
Main Author: Thobaben, R.
Format: Conference Proceeding
Language:English
Published: IEEE 01.10.2008
Series:Conference record of the Asilomar conference on signals, systems and computers
Subjects:
BEHAVIOR
Broadcasting
CHANNELS
Computer science
Convolutional codes
COOPERATION
Datavetenskap
Decoding
DIVERSITY
Fading
Frame relay
Information analysis
Information technology
Informationsteknik
Mobile antennas
NETWORKS
PARITY-CHECK CODES
Protocols
TECHNOLOGY
TEKNIKVETENSKAP
Turbo codes
ISBN:9781424429400, 1424429404
ISSN:1058-6393
Online Access:Get full text
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Summary:In this paper, we address the design of distributed coding schemes for the 3-node relay channel with half-duplex constraint. We first discuss the general problem of optimally re-encoding noisy data at the relay and summarize recently proposed approximations. Based on an analysis of the extrinsic information transfer characteristics of the component codes we investigate the potential of ldquoweakrdquo turbo or LDPC codes which are employed by the source node in order to increase the reliability of the relay when decoding is not possible. The results show that we can indeed gain from the proposed code design.
ISBN:9781424429400
1424429404
ISSN:1058-6393
DOI:10.1109/ACSSC.2008.5074564