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Energy-efficient cooperative routing in BER constrained multihop networks |
Behrouz MAHAM1,2( ), Mérouane DEBBAH3( ), Are HJ?RUNGNES1( ) |
1. UNIK–University Graduate Center, University of Oslo, Instituttveien-25, No-2027, Kjeller, Norway; 2. Department of Electrical Engineering, Stanford University, CA 94305, USA; 3. Alcatel-Lucent Chair on Flexible Radio, SUPéLEC, Gif-sur-Yvette 91192, France |
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Abstract Due to the limited energy supplies of nodes, in many applications like wireless sensor networks energyefficiency is crucial for extending the lifetime of these networks. We study the routing problem for multihop wireless ad hoc networks based on cooperative transmission. The source node wants to transmit messages to a single destination. Other nodes in the network may operate as relay nodes. In this paper, we propose a cooperative multihop routing for the purpose of power savings, constrained on a required bit error rate (BER) at the destination. We derive analytical results for line and grid network topologies. It is shown that energy savings of 100% are achievable in line and grid networks with a large number of nodes for BER= 10-4 constraint at the destination.
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Keywords
cooperative transmission
energy efficiency
outage probability
routing
multihop networks
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Corresponding Author(s):
MAHAM Behrouz,Email:behrouz@unik.no; DEBBAH Mérouane,Email:merouane.debbah@supelec.fr; HJ?RUNGNES Are,Email:arehj@unik.no
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Issue Date: 05 June 2009
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