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Generalized Joint Channel-Network Coding in Asymmetric Two-Way Relay Channels

  • Shen, Shengqiang (School of Information and Control Engineering, China University of Mining and Technology) ;
  • Li, Shiyin (School of Information and Control Engineering, China University of Mining and Technology) ;
  • Li, Zongyan (School of Information and Control Engineering, China University of Mining and Technology)
  • Received : 2015.10.18
  • Accepted : 2016.11.15
  • Published : 2016.12.31

Abstract

Combining channel coding and network coding in a physical layer in a fading channel, generalized joint channel-network coding (G-JCNC) is proved to highly perform in a two-way relay channel (TWRC). However, most relevant discussions are restricted to symmetric networks. This paper investigates the G-JCNC protocols in an asymmetric TWRC (A-TWRC). A newly designed encoder used by source nodes that is dedicated to correlate codewords with different orders is presented. Moreover, the capability of a simple common non-binary decoder at a relay node is verified. The effects of a power match under various numbers of iteration and code lengths are also analyzed. The simulation results give the optimum power match ratio and demonstrate that the designed scheme based on G-JCNC in an A-TWRC has excellent bit error rate performance under an appropriate power match ratio.

Keywords

References

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