dc.contributor.authorXiang, Liu
dc.contributor.authorLuo, Jun
dc.contributor.authorDeng, Chenwei
dc.contributor.authorVasilakos, Athanasios V.
dc.contributor.authorLin, Weisi
dc.date.accessioned2013-07-30T06:01:32Z
dc.date.available2013-07-30T06:01:32Z
dc.date.copyright2012en_US
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/10220/12512
dc.description.abstractAlthough wireless sensor networks (WSNs) are powerful in monitoring physical events, the data collected from a WSN are almost always incomplete if the surveyed physical event spreads over a wide area. The reason for this incompleteness is twofold: i) insufficient network coverage and ii) data aggregation for energy saving. Whereas the existing recovery schemes only tackle the second aspect, we develop Dual-lEvel Compressed Aggregation (DECA) as a novel framework to address both aspects. Specifically, DECA allows a high fidelity recovery of a widespread event, under the situations that the WSN only sparsely covers the event area and that an in-network data aggregation is applied for traffic reduction. Exploiting both the low-rank nature of real-world events and the redundancy in sensory data, DECA combines matrix completion with a fine-tuned compressed sensing technique to conduct a dual-level reconstruction process. We demonstrate that DECA can recover a widespread event with less than 5% of the data (with respect to the dimension of the event) being collected. Performance evaluation based on both synthetic and real data sets confirms the recovery fidelity and energy efficiency of our DECA framework.en_US
dc.language.isoenen_US
dc.subjectDRNTU::Engineering::Computer science and engineering
dc.titleDECA : recovering fields of physical quantities from incomplete sensory dataen_US
dc.typeConference Paper
dc.contributor.conferenceAnnual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (9th : 2012 : Seoul, Korea)en_US
dc.contributor.schoolSchool of Computer Engineeringen_US
dc.identifier.doihttp://dx.doi.org/10.1109/SECON.2012.6275775


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