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      Time-delay estimation in multiple-input single-output systems

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      Author
      Koçak, Fatih
      Gezici, Sinan
      Date
      2010
      Source Title
      IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
      Publisher
      IEEE
      Pages
      200 - 205
      Language
      English
      Type
      Conference Paper
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      Abstract
      In this paper, the time-delay estimation problem is studied for multiple-input single-output (MISO) systems. First, a theoretical analysis is carried out by deriving the Cramer-Rao lower bound (CRLB) for time-delay estimation in a MISO system. Then, the maximum likelihood (ML) estimator for the time-delay parameter is obtained, which results in a complex optimization problem in general. In order to provide a solution of the ML estimator with low computational complexity, ML estimation based on a genetic global optimization algorithm, namely, differential evolution (DE), is proposed. Simulation studies for various fading scenarios are performed to investigate the performance of the proposed algorithm. ©2010 IEEE.
      Keywords
      Cramer-Rao lower bound (CRLB)
      Differential evolution (DE)
      Maximum likelihood (ML) estimator
      Multiple-input single-output (MISO)
      Time-delay estimation
      Cramer-rao lower bound
      Differential evolution
      Maximum likelihood (ML) estimator
      Multiple input single outputs
      Time delay estimation
      Biology
      Computational complexity
      Cramer-Rao bounds
      Estimation
      Evolutionary algorithms
      Fading (radio)
      Global optimization
      Maximum likelihood estimation
      Optimization
      Radio communication
      Time delay
      Permalink
      http://hdl.handle.net/11693/28465
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/PIMRC.2010.5671587
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      • Department of Electrical and Electronics Engineering 3601
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