# Tightening the upper bound for the minimum energy broadcasting

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## Abstract

In this paper we present a new upper bound on the approximation ratio of the Minimum Spanning Tree heuristic for the basic problem on *Ad-Hoc Networks* given by the *Minimum Energy Broadcast Routing* (MEBR). We introduce a new analysis allowing to establish a 6.33-approximation ratio in the 2-dimensional case, thus decreasing the previously known 7.6 upper bound [4], almost closing the gap with the lower bound of 6 [12].

## Keywords

Minimums panning tree Approximation factor Multi-hop Ad hoc networks## Preview

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## References

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