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Out-of-Band Radiation Reduction in Cognitive Radio OFDM Systems Hybridizing Firefly Algorithm with Generalized Sidelobe Canceller

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Abstract

Orthogonal frequency division multiplexing is the most popular method for dynamic spectrum access because of its ability in changing the spectrum shapes. However, it produces a substantial out-of-band (OOB) radiation due to the high sidelobes of the modulated subcarriers which results in considerable interference to the neighboring users. This challenge becomes even more critical in cognitive radio networks, which gives the secondary system the right to use the available spectrum holes. In this paper, a joint technique for the reduction of OOB radiation is developed by adding the advantages of the cancellation carriers, based on firefly algorithm and of the generalized sidelobe canceller. Simulation results show that by using the proposed technique substantial reduction in OOB radiation is achieved.

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Acknowledgements

The authors thank Mr. Fazal Elahi (Late) for his continuous support and assistance during this research.

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Authors and Affiliations

  1. Department of Electrical Engineering, Faculty of Engineering and Technology, International Islamic University, Islamabad, 44000, Pakistan

    Atif Elahi & Noor Gul

  2. Department of Electrical Engineering, Air University, Islamabad, 44000, Pakistan

    Ijaz Mansoor Qureshi

  3. Department of Electrical Engineering, COMSATS Institute of Information Technology, Attock Campus, 43600, Attock, Pakistan

    Fawad Zaman

  4. Department of Statistics, Islamia College University, Peshawar, 49000, Pakistan

    Mehreen Atif

Authors
  1. Atif Elahi
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  2. Ijaz Mansoor Qureshi
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  3. Fawad Zaman
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Correspondence to Atif Elahi.

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Elahi, A., Qureshi, I.M., Zaman, F. et al. Out-of-Band Radiation Reduction in Cognitive Radio OFDM Systems Hybridizing Firefly Algorithm with Generalized Sidelobe Canceller. Wireless Pers Commun 100, 941–956 (2018). https://doi.org/10.1007/s11277-018-5359-4

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