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      Performance limits on ranging with cognitive radio

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      Author
      Dardari, D.
      Karisan, Yasir
      Gezici, Sinan
      D'Amico, A. A.
      Mengali, U.
      Date
      2009-06
      Source Title
      Proceedings - 2009 IEEE International Conference on Communications Workshops, ICC 2009
      Publisher
      IEEE
      Pages
      [1] - [5]
      Language
      English
      Type
      Conference Paper
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      Abstract
      Cognitive radio is a promising paradigm for efficient utilization of the radio spectrum due to its capability to sense environmental conditions and adapt its communication and localization features. In this paper, the theoretical limits on time-of-arrival estimation for cognitive radio localization systems are derived in the presence of interference. In addition, an optimal spectrum allocation strategy which provides the best ranging accuracy limits is proposed. The strategy accounts for the constraints from the sensed interference level as well as from the regulatory emission mask. Numerical results are presented to illustrate the improvements that can be achieved by the proposed approach. © 2009 IEEE.
      Keywords
      Cognitive radio
      Interference
      Orthogonal frequency division multiplexing (OFDM)
      Ranging
      Time-of-arrival (TOA) estimation
      Ultra-wideband (UWB)
      Cognitive systems
      Estimation
      Evolutionary algorithms
      Frequency allocation
      Frequency division multiple access
      Frequency estimation
      Multiplexing
      Radio
      Radio systems
      Technical presentations
      Wireless telecommunication systems
      Permalink
      http://hdl.handle.net/11693/28684
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/ICCW.2009.5207990
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      • Department of Electrical and Electronics Engineering 3524
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