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Distributed Network Coding for Wireless Sensor Networks Based on Rateless LT Codes

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4 Author(s)
Kun Pang ; Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW, Australia ; Zihuai Lin ; Uchoa-Filho, B.F. ; Vucetic, B.

In this paper, we propose a distributed network coding (DNC) scheme based on digital fountain rateless LT codes for wireless sensor networks (WSNs), where a group of source nodes communicate with a single destination node through a group of relay nodes in a two-hop fashion. The aim of the proposed scheme is to achieve network coding gains. The relay nodes perform linear combinations by using network coding to form network-coded symbols and send them to the destination node. At the destination, a graph-based, rateless code is formed on the fly. The main contribution of this paper is the derivation of an analytical symbol error rate (SER) bound for the proposed coding scheme.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 6 )