Sequential Uniformly Reweighted Sum-Product Algorithm for Cooperative Localization in Wireless Networks

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Provided by: Hindawi Publishing
Topic: Networking
Format: PDF
Graphical models have been widely applied in solving distributed inference problems in wireless networks. In this paper, the authors formulate the cooperative localization problem in a mobile network as an inference problem on a factor graph. Using a sequential schedule of message updates, a Sequential Uniformly ReWeighted Sum-Product Algorithm (SURW-SPA) is developed for mobile localization problems. The proposed algorithm combines the distributed nature of Belief Propagation (BP) with the improved performance of sequential Tree-ReWeighted message passing (TRW) algorithm.
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