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Performance Analysis of Distributed Raptor Codes in Wireless Sensor Networks

J. Yue ; Z. H. Lin ; B. Vucetic ; G. Q. Mao ; Tor Aulin (Institutionen för data- och informationsteknik, Datorteknik (Chalmers))
Ieee Transactions on Communications (0090-6778). Vol. 61 (2013), 10, p. 4357-4368.
[Artikel, refereegranskad vetenskaplig]

In this paper, we propose a distributed network coding (DNC) scheme based on the Raptor codes for wireless sensor networks (WSNs), where a group of sensor nodes, acting as source nodes, communicate with a single sink through some other sensor nodes, serving as relay nodes, in a multi-hop fashion. At the sink, a graph-based Raptor code is formed on the fly. After receiving a sufficient number of encoded packets, the sink begins to decode. The main contributions of this paper are the derivation of a bit error rate (BER) lower bound for the LT-based DNC scheme over Rayleigh fading channels under maximum-likelihood (ML) decoding, and the derivations of upper and lower BER bounds for the proposed Raptor-based DNC scheme on the basis of the derived BER bound of LT codes.

Nyckelord: Distributed network coding, wireless sensor networks, Raptor codes, Quasi-static Rayleigh fading channel, upper and lower bounds, PARITY-CHECK CODES, RATELESS, STORAGE, GRAPH

Denna post skapades 2014-01-16.
CPL Pubid: 192631


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Institutioner (Chalmers)

Institutionen för data- och informationsteknik, Datorteknik (Chalmers)


Elektroteknik och elektronik

Chalmers infrastruktur