Title | A Greedy Topology Design to Accelerate Consensus in Broadcast Wireless Sensor Networks |
Publication Type | Journal Article |
Year of Publication | 2015 |
Authors | Vecchio, M, López-Valcarce, R |
Journal | Information Processing Letters |
Volume | 115 |
Start Page | 408 |
Issue | 3 |
Pages | 408-413 |
Date Published | 03/2015 |
Keywords | compass, wsn |
Abstract | We present techniques to improve convergence speed of distributed average consensus algorithms in wireless sensor networks by means of topology design. A broadcast network is assumed, so that only the transmit power of each node can be independently controlled, rather than each individual link. Starting with a maximally connected configuration in which all nodes transmit at full power, the proposed methods successively reduce the transmit power of a chosen node in order to remove one and only one link; nodes are greedily selected either in order to yield fastest convergence at each step, or if they have the largest degree in the network. These greedy schemes provide a good complexity-performance tradeoff with respect to full-blown global search methods. As a side benefit, improving the convergence speed also results in savings in energy consumption with respect to the maximally connected setting. |
DOI | 10.1016/j.ipl.2014.11.009 |
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