Joint detection and decoding for physical-layer network coding in power line channel

In this study, a joint detection and generalised sum-product decoding algorithm for a two-way relay physical-layer network coding (PLNC) system in power line communication is proposed. Distinct from the existing works which mainly focused on separate or iterative PLNC detection and decoding, the pro...

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Bibliographic Details
Published in:IET communications Vol. 11; no. 18; pp. 2735 - 2742
Main Authors: Hu, Xiaoyu, Chen, Zhe, Yin, Fuliang
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 21.12.2017
Subjects:
belief propagation
carrier transmission on power lines
channel decoder
computational complexity
demodulation
factor graph
generalised sum‐product decoding
graph theory
iterative decoding
iterative PLNC detection
joint detection‐decoding
majority‐logic algorithm
network coding
PLNC decoding
PLNC demodulation
power line channel
power line communication
Research Article
separate PLNC detection
symbol detector
two‐way relay physical‐layer network coding
factor graph
network coding
joint detection-decoding
belief propagation
graph theory
channel decoder
generalised sum-product decoding
demodulation
power line communication
iterative PLNC detection
carrier transmission on power lines
PLNC demodulation
power line channel
symbol detector
iterative decoding
PLNC decoding
separate PLNC detection
majority-logic algorithm
two-way relay physical-layer network coding
computational complexity
ISSN:1751-8628, 1751-8636
Online Access:Get full text
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Description
Summary:In this study, a joint detection and generalised sum-product decoding algorithm for a two-way relay physical-layer network coding (PLNC) system in power line communication is proposed. Distinct from the existing works which mainly focused on separate or iterative PLNC detection and decoding, the proposed algorithm is a belief propagation-based joint PLNC detection and decoding algorithm, which integrates the PLNC, symbol detector and channel decoder together. The proposed algorithm is described by a joint factor graph, in which the detection nodes are connected to the factor graph of a generalised sum-product decoder. The PLNC demodulation is redesigned to make sure that the degree of each detection node in the joint factor graph is more than one. A low computational complexity solution of the proposed joint decoding algorithm based on the majority-logic algorithm is also proposed. The simulation results reveal the validity of the proposed algorithms.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2017.0382