Theoretical limits for estimation of periodic movements in pulse-based UWB systems

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buir.contributor.authorGezici, Sinan
dc.citation.epage417en_US
dc.citation.issueNumber3en_US
dc.citation.spage405en_US
dc.citation.volumeNumber1en_US
dc.contributor.authorGezici, Sinanen_US
dc.date.accessioned2016-02-08T10:12:50Z
dc.date.available2016-02-08T10:12:50Z
dc.date.issued2007en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractIn this paper, Cramer-Rao lower bounds (CRLBs) for estimation of signal parameters related to periodically moving objects in pulse-based ultra-wideband (UWB) systems are presented. The results also apply to estimation of vital parameters, such as respiration rate, using UWB signals. In addition to obtaining the CRLBs, suboptimal estimation algorithms are also presented. First, a single-path channel with additive white Gaussian noise is considered, and closed-form CRLB expressions are obtained for sinusoidal object movements. Also, a two-step suboptimal algorithm is proposed, which is based on time delay estimation via matched filtering followed by least-squares estimation, and its asymptotic optimality property is shown in the limit of certain system parameters. Then, a multipath environment is considered, and exact and approximate CRLB expressions are derived. Moreover, suboptimal schemes for parameter estimation are studied. Simulation studies are performed for the estimation of respiration rates in order to evaluate the lower bounds and performance of the suboptimal algorithms for realistic system parameters.en_US
dc.identifier.doi10.1109/JSTSP.2007.906645en_US
dc.identifier.eissn1941-0484
dc.identifier.issn1932-4553
dc.identifier.urihttp://hdl.handle.net/11693/23363
dc.language.isoEnglishen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.relation.isversionofhttp://doi.org/10.1109/JSTSP.2007.906645en_US
dc.source.titleIEEE Journal on Selected Topics in Signal Processingen_US
dc.subjectCramer-Rao lower bound (CRLB)en_US
dc.subjectEstimation theoryen_US
dc.subjectImpulse radio (IR)en_US
dc.subjectLeast-squares (LS) estimationen_US
dc.subjectMatched filteringen_US
dc.subjectUltra-wideband (UWB)en_US
dc.titleTheoretical limits for estimation of periodic movements in pulse-based UWB systemsen_US
dc.typeArticleen_US
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