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A Practical Scheme for Relaying in Sensor Networks Using Repeat-Accumulate Codes
 

Summary: A Practical Scheme for Relaying in Sensor
Networks Using Repeat-Accumulate Codes
Andrew W. Eckford and Raviraj S. Adve
Dept. of Electrical and Computer Engineering, University of Toronto
10 King's College Road, Toronto, Ontario, Canada M5S 3G4
E-mail: andrew.eckford@utoronto.ca, rsadve@comm.utoronto.ca
Submitted as a regular paper for CISS 2006
Abstract-- Given limitations with current technology, nodes
in a sensor network have stringent energy and complexity
constraints. This paper presents a scheme for cooperation via
relaying and error-control coding in sensor networks, using punc-
tured systematic repeat-accumulate codes. Assuming knowledge
of the source-relay channel quality, we use density evolution to
show that the proposed scheme achieves good performance and
a good energy tradeoff despite low computational complexity. An
interesting additional benefit of such a scheme is the notion of
fractional cooperation by a relay node. As a motivating example,
we analyze networks of up to ten cooperating nodes in Rayleigh
fading, which communicate with a more sophisticated receiver.
I. INTRODUCTION

  

Source: Adve, Raviraj - Department of Electrical and Computer Engineering, University of Toronto

 

Collections: Engineering