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http://dx.doi.org/10.3837/tiis.2016.12.013

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)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.10, no.12, 2016 , pp. 5361-5374 More about this Journal
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
Asymmetric two-way relay; G-JCNC; virtual encoder; power matching; iteration numbers;
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