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Distributed Projection-Based Algorithms for Source Localization in Wireless Sensor Networks
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DOI：10.1109/TWC.2015.2402672.png)
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摘要
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In this paper, we investigate source localization for wireless sensor networks based on received signal strength. We first formulate the localization problem as the intersection computation of a group of sensing rings, and then convert this non-convex problem into two weighted convex optimization problems. We next propose a unified distributed alternating projection algorithm to solve the resulting weighted optimization problems, where sensor nodes can communicate only locally with their neighbors over a time-varying jointly-connected topology. We also show that sensor nodes' estimates can achieve consensus on a possible minimizer. Both theoretical analysis and some comparative simulations reveal that the proposed approach has good estimation performance in both the consistent and inconsistent cases.
Keyword:
Source localization
wireless sensor networks
distributed algorithms
intersection computation
constrained convex optimization
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期刊
IF:
10.7
论文数:
1.3W
被引数:
5.3W
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