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A low complexity peak-to-average power ratio reduction scheme based on selected mapping and radix-II IFFT in OFDM systems

Author

Listed:
  • Mohsen Kazemian

    (Universiti Putra Malaysia)

  • Pooria Varahram

    (National University of Ireland)

  • S. J. Hashim

    (Universiti Putra Malaysia)

  • Borhanuddin M. Ali

    (Universiti Putra Malaysia
    Universiti Putra Malaysia)

  • Ronan Farrell

    (National University of Ireland)

Abstract

Because of its lack of feedback process and the simplicity of its searching algorithm, conventional selected mapping (CSLM) is an efficient peak-to-average power ratio (PAPR) reduction technique in orthogonal frequency division multiplexing systems compared to the present techniques such as partial transmit sequence and active constellation extension. The requirement for large numbers of inverse fast Fourier transform (IFFT) blocks to provide desired PAPR reduction performance is introduced as the most significant drawback of the CSLM. This paper uses the special structure of an N-point radix-II IFFT in the CSLM and proposes a low complexity method to reduce the redundant calculations with almost the same PAPR reduction, bit-error rate, and power spectral density performances as those of the CSLM. The simulation results show that the computational complexity is reduced by at least 46.8% compared to that of the CSLM with approximately the same PAPR performance.

Suggested Citation

  • Mohsen Kazemian & Pooria Varahram & S. J. Hashim & Borhanuddin M. Ali & Ronan Farrell, 2018. "A low complexity peak-to-average power ratio reduction scheme based on selected mapping and radix-II IFFT in OFDM systems," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 67(1), pages 21-30, January.
    • Handle: RePEc:spr:telsys:v:67:y:2018:i:1:d:10.1007_s11235-017-0312-5
    DOI: 10.1007/s11235-017-0312-5
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    Keywords

    OFDM; IFFT; PAPR; RADIX-II; CSLM;
    All these keywords.

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