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A low complexity high efficiency hybrid multiplicative-additive crest factor reduction for OFDM systems

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Abstract

In this paper, we propose a novel technique to reduce the crest factor (CF) in orthogonal frequency division multiplexing systems. It consists of two inverse fast Fourier transform (IFFT) blocks, the input symbols of the first IFFT are the mapped symbols, whereas the input symbols of the second IFFT are the summations of the absolute value of the real part of the outer signal constellation points and zero symbols. First, the output of the two IFFT blocks is partitioned into four subblocks, which are subsequently used to rearrange the subblocks with padding zeros in a specific manner. Then, a new optimization scheme is introduced, in which only a single two-phase sequence and four iterations need to be applied. Numerical analysis shows that the proposed hybrid technique achieves better CF reduction performance with significantly lower complexity and better bit error rate performance than the existing scrambling (multiplicative) and additive CF techniques.

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Acknowledgments

This work was supported by Universiti Putra Malaysia under the Prototype Development Research Grant Scheme (PRGS) of the Ministry of Higher Education, Malaysia. (No. 5528700).

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Authors and Affiliations

  1. Department of Computer and Communications Systems Engineering, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia

    Khalid Al-Hussaini & Shaiful Jahari Hashim

  2. Department of Computer and Communications Systems Engineering,Research Centre of Excellence for Wireless and Photonic Networks (WiPNET), Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia

    Borhanuddin M. Ali

  3. CTVR - The Telecommunication Research Centre,Callan Institute, Department of Electronic Engineering, National University of Ireland, Kildare, Ireland

    Pooria Varahram & Ronan Farrell

Authors
  1. Khalid Al-Hussaini
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  2. Borhanuddin M. Ali
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  3. Pooria Varahram
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  4. Shaiful Jahari Hashim
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  5. Ronan Farrell
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Corresponding author

Correspondence to Khalid Al-Hussaini.

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Al-Hussaini, K., Ali, B.M., Varahram, P. et al. A low complexity high efficiency hybrid multiplicative-additive crest factor reduction for OFDM systems. Telecommun Syst 65, 297–307 (2017). https://doi.org/10.1007/s11235-016-0231-x

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