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A Joint SMSE Waveform Design and Blind Cyclostationary Based Sensing for Cognitive Radios

  • Supreet Singh
  • Surbhi Sharma
Research Paper
  • 60 Downloads

Abstract

Cognitive Radio (CR) presents a lot of challenges with regard to developing the techniques and methodologies to dynamically utilize the unused or underused spectrum. The issue of efficient utilization of radio resources can be implemented unitedly through dynamic waveform design and an efficient spectrum sensing. In this paper, waveform design using spectrally modulated spectrally encoded (SMSE) framework is conjoined with the cyclostationary based sensing technique (CSS) for CR. To identify the free spectrum, an analytical expression of waveform design variables in terms of sensing parameters has been derived. Further, to find the channel occupancy/spectrum holes, a joint CSS and SMSE based test stat has been proposed. The joint test stat offers a better and clear decision by providing a large gap between test stat and the required threshold setting. Finally, to evaluate the receiver performance, receiver operating characteristic (ROC) curves have been plotted which show that the proposed joint scheme achieves a significant performance improvement at lower SNR values when compared with traditionally available detectors.

Keywords

SMSE Spectrum sensing Cognitive radio Cyclostationary SDR 

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Copyright information

© Shiraz University 2017

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringBaba Banda Singh Bahadur Engineering CollegeFatehgarh SahibIndia
  2. 2.Department of Electronics and Communication EngineeringThapar UniversityPatialaIndia

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