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Journal of Applied Sciences >

2014 , Vol. 32 >Issue 3: 251 - 256

DOI: https://doi.org/10.3969/j.issn.0255-8297.2014.03.005

Communication Engineering

Network Coding Based LDPC-Coded Cooperation

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  • College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics,
    Nanjing 210016, China  

Received date: 2012-06-13

  Revised date: 2013-01-03

  Online published: 2013-01-03

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Abstract

This paper proposes a cooperation scheme for network coding based on irregular binary systematic LDPC codes. The relay cooperates with two users via network coding simultaneously to improve average throughput. Outage probability of the proposed scheme is analyzed for the case that the relay just forwards parity-check bits. To efficiently decode three signals from the two users and the relay, a joint iterative decoding algorithm is used at the destination based on the joint Tanner graph. Simulation results show that the proposed network coding based LDPC-coded cooperation scheme significantly lowers outage probability compared with noncooperation schemes. In case of high SNR, the scheme can achieve obvious bit-error-ratio (BER) performance gain.

Key words： coded cooperation; network coding; irregular binary systematic LDPC codes; outage probability; joint Tanner graph

Cite this article

ZHANG Shun-wai, YANG Feng-fan, TANG Lei . Network Coding Based LDPC-Coded Cooperation[J]. Journal of Applied Sciences, 2014 , 32(3) : 251 -256 . DOI: 10.3969/j.issn.0255-8297.2014.03.005

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