News Updates Thursday 25th Apr 2019 :
  • Welcome to INPRESSCO, world's leading publishers, We have served more than 10000+ authors
  • Articles are invited in engineering, science, technology, management, industrial engg, biotechnology etc.
  • Paper submission last date of March/April 2019 is 24 April 2019, Submit online or at
  • Our journals are indexed in NAAS, University of Regensburg Germany, Google Scholar, Cross Ref etc.
  • DOI is given to all articles

Performance study of Spectrum Estimation and sensing Methods in Cognitive Radios

Author : R.Nithya Kumari, M.N.Suma and B Kanmani

Pages : 312-317
Download PDF

Spectrum estimation and spectrum sensing are primarychore of cognitive radio (CR), where in dynamically it explores the radio spectrum and reliably determine portion of the frequency bands that has been used and unused by the primary users. In this paper we propose spectrum estimation using Discrete Fourier transform (DFT) which has Non parametric estimators like Periodogram, Welch and Multitaper methods. Next Discrete cosine transform (DCT) whose performance is compared with respect to fast Fourier transform (FFT) using variance as the parameter. Further spectral sensing using wavelet packet transform for various decomposition level and different types of wavelets is being compared based on its performance parameter Receiver operating characteristics (ROC).In addition this paper also discuss about spectrum sensing using orthogonal frequency division multiplexing (OFDM).Simulation results show DCT provides better spectral estimation than DFT and has less variance. Further for wavelets Daubechies wavelet has better performance in ROC with increase in depth andorder of 10.

Keywords: Cognitive radio, Spectrum Estimation, Spectrum Sensing, WPT, ROC, OFDM.

Article published in the Proceedings of National Conference on ‘Women in Science & Engineering’ (NCWSE 2013), SDMCET Dharwad




Call for Papers
  1. IJCET- March/April 2019 Issue

    Submission Last Date
    24 April
  2. DOI is given to all articles
  3. Current Issue
  4. IJTT-June-2019
  5. IJAIE-June-2019
  6. IJCSB-June-2019
  • Inpressco Google Scholar
  • Inpressco Science Central
  • Inpressco Global impact factor
  • Inpressco aap

International Press corporation is licensed under a Creative Commons Attribution-Non Commercial NoDerivs 3.0 Unported License
©2010-2018 INPRESSCO® All Rights Reserved