Performance Analysis of Distributed Raptor Codes in Wireless Sensor Networks
Artikel i vetenskaplig tidskrift, 2013

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.

wireless sensor networks

GRAPH

Raptor codes

PARITY-CHECK CODES

RATELESS

Quasi-static Rayleigh fading channel

upper and lower bounds

STORAGE

Distributed network coding

Författare

J. Yue

Xidian University

Zihuai Lin

The University of Sydney

B. Vucetic

The University of Sydney

G. Q. Mao

The University of Sydney

Tor Aulin

Chalmers, Data- och informationsteknik, Datorteknik

IEEE Transactions on Communications

0090-6778 (ISSN)

Vol. 61 4357-4368

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/tcomm.2013.090513.120913