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Rajit Manohar and Anna Scaglione
Reducing power consumption and increasing battery life of
nodes in an ad-hoc network requires an integrated power control
and routing strategy. Power optimal routing selects the multi-hop
links that require the minimum total power cost for data
transmission under a constraint on the link quality. This paper
studies optimal power routing under the constraint of a fixed
end-to-end probability of error and compares the power optimal
routes obtained with this criterion with those from the more
commonly used fixed per hop error rate constraint. The comparison
is carried out by looking at the properties of the power optimal
graph, formed by the union of all the power optimal routes. The
paper also provides algorithms to determine the power optimal
routes.
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