Spectrum sensing in cognitive radio using multitaper method based on MIMO-OFDM techniques

  • Ahmed O. Abdul SalamEmail author
  • Ray E. Sheriff
  • Saleh R. Al-Araji
  • Kahtan Mezher
  • Qassim Nasir


The current inefficient utilization of frequency spectrum has alerted regulatory bodies to streamline improvements. Cognitive radio (CR) has recently received considerable attention and is widely perceived as a promising improvement tool in estimating, or equivalently sensing, the frequency spectrum for wireless communication systems. The cognitive cycle in CR systems is capable of recognizing and processing better spectrum estimation (SE) and hence promotes the efficiency of spectrum utilization. Among different SE methods, the multi-taper method (MTM) shows encouraging results. Further performance improvement in the SE for CR can be achieved by applying multiple antennas and combining techniques. This paper proposes a constructive development of SE using MTM, abbreviated as MTSE, and by employing multiple-input multiple-output (MIMO), parsed into separate parallel channels using singular value decomposition (SVD), and maximum ratio combining (MRC) configurations. Deviating from these improvements, however, multicarrier systems such as orthogonal frequency division multiplexing (OFDM) show inferior sensing performances due to the noise multiplicity generated and combined from all subcarrier channels. By means of the quadrature matrix form, the probabilities for such integrated settings of SE have been derived to reach at their approximate asymptotes. Numerical simulations revealed specific better performances stemmed from coupling the fashionable MTSE and MIMO technologies.


Cognitive radio Spectrum estimation Multi-taper Multiple-input multiple-output Orthogonal frequency division multiplexing Singular value decomposition 



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Copyright information

© Institut Mines-Télécom and Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Engineering and InformaticsUniversity of BradfordBradfordUK
  2. 2.School of EngineeringUniversity of BoltonBoltonUK
  3. 3.(formerly) College of EngineeringKhalifa University for Science and TechnologyAbu DhabiUnited Arab Emirates
  4. 4.College of EngineeringUniversity of SharjahSharjahUnited Arab Emirates

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