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      • Department of Electrical and Electronics Engineering
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      Comparison of the CAF-DF and sage algorithms in multipath channel parameter estimation

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      Author(s)
      Güldoğan, M. Burak
      Arıkan, Orhan
      Date
      2008-07
      Source Title
      SAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
      Publisher
      IEEE
      Pages
      33 - 36
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      266
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      260
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      Abstract
      In this paper, performance of the recently proposed Cross Ambiguity Function - Direction Finding (CAF-DF) technique is compared with the Space Alternating Generalized Expectation Maximization (SAGE) technique. The CAF-DF, iteratively estimates direction of arrival (DOA), time-delay, Doppler shift and amplitude corresponding to each impinging signal onto an antenna array by utilizing the cross ambiguity function. On synthetic signals, based on Monte Carlo trials, performances of the algoritms are tested in terms of root Mean Squared Error (rMSE) at different Signal-to-Noise Ratios (SNR). Cramer-Rao lower bound is included for statistical comparisons. Simulation results indicate the superior performance of the CAF-DF technique over SAGE technique for low and medium SNR values. © 2008 IEEE.
      Keywords
      Acoustic intensity
      Acoustic microscopes
      Amplitude modulation
      Antenna accessories
      Antenna arrays
      Channel estimation
      Chemical sensors
      Control theory
      Cramer-Rao bounds
      Direction of arrival
      Estimation
      Fluorescence
      Missile bases
      Model structures
      Parameter estimation
      Radio direction finding systems
      Room and pillar mining
      Semantics
      Sensor arrays
      Sensors
      Signal filtering and prediction
      Signal processing
      Wireless telecommunication systems
      Cramer-Rao Lower bounds
      Cross ambiguity function
      DF techniques
      Direction-finding
      Doppler shifting
      Monte Carlo trials
      Multi-path channels
      Multichannel signal processing
      Noise ratios
      Root mean squared-error
      SAGE algorithms
      Simulation results
      SNR values
      Space-alternating generalized expectation maximization
      Statistical comparisons
      Superior performance
      Synthetic signals
      Time delaying
      Signal to noise ratio
      Permalink
      http://hdl.handle.net/11693/26856
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/SAM.2008.4606818
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      • Department of Electrical and Electronics Engineering 3868
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