Finite Block-Length Analog Fountain Codes for Ultra-Reliable Low Latency Communications

In this paper, a theoretical framework for the design and evaluation of finite block-length analog fountain codes (AFC) towards ultra-reliable low latency communications (URLLC) is proposed. First, based on the achievable rate analysis and extrinsic information transfer (EXIT) analysis for AFC, we p...

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Bibliographic Details
Published in:IEEE transactions on communications Vol. 68; no. 3; pp. 1391 - 1404
Main Authors: Zhang, Ke, Jiao, Jian, Huang, Zixuan, Wu, Shaohua, Zhang, Qinyu
Format: Journal Article
Language:English
Published: New York IEEE 01.03.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
analog fountain codes
Codes
Complexity theory
Decoding
Dispersion
dispersion perspective
Encoding
finite block-length
Information transfer
Iterative decoding
Signal to noise ratio
Ultra reliable low latency communication
URLLC
Weight
weight adaptive
ISSN:0090-6778, 1558-0857
Online Access:Get full text
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Summary:In this paper, a theoretical framework for the design and evaluation of finite block-length analog fountain codes (AFC) towards ultra-reliable low latency communications (URLLC) is proposed. First, based on the achievable rate analysis and extrinsic information transfer (EXIT) analysis for AFC, we propose a weight adaptive (WA) AFC transmission scheme by introducing a limited feedback link, which can realize the lowest complexity AFC over a wide range SNRs. Further, by combining the conventional EXIT analysis and the dispersion perspective of mutual information, we propose a modified weight selection scheme for short block length WA-AFC (SWA-AFC) scheme. Simulation results show that our SWA-AFC scheme can achieve a superior performance than the existing AFC schemes, and approaching to the Polyansky-Poor-Verdu (PPV) bound.
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2020.2965118