A practical joint network-channel coding scheme for reliable communication in wireless networks

Authors:
Zheng Guo;Jie Huang;Bing Wang;Jun-Hong Cui;Shengli Zhou;Peter Willett
Affiliations:
University of Connecticut, Storrs, CT, USA;University of Connecticut, Storrs, CT, USA;University of Connecticut, Storrs, CT, USA;University of Connecticut, Storrs, CT, USA;University of Connecticut, Storrs, CT, USA;University of Connecticut, Storrs, CT, USA
Venue:
Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing
Year:
2009

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Abstract

In this paper, we propose a practical scheme, called Non-Binary Joint Network-Channel Decoding (NB-JNCD) for reliable communication in wireless networks. It seamlessly couples channel coding and network coding, and can effectively combat the detrimental effect of fading of wireless channels, especially in large networks. On a high order Galois field, NB-JNCD combines non-binary LDPC channel coding and random linear network coding through iterative joint decoding, which helps fully exploit the spatial diversity and redundancy residing in both codes. Furthermore, the scheme can unify non-binary source coding and high order modulation without the need of any bit-to-symbol conversion and its inverse. Through analysis and simulation, we demonstrate the significant performance improvement of NB-JNCD against other schemes.