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Peak-to-average power ratio reduction using selective mapping with unequal power distribution

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Abstract

A new approach for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems was proposed. This approach is based on assigning powers to the different subcarriers of OFDM using an unequal power distribution strategy. In addition, a reduced complexity selective mapping (RC-SLM) scheme was proposed. The proposed scheme is based on partitioning the frequency domain symbol sequence into several sub-blocks, and then each sub-block is multiplied by different phase sequences whose length is shorter than that used in the conventional SLM scheme. Then, a kind of low complexity conversions is used to replace the IFFT blocks. The performance of the proposed RC-SLM scheme along with the new approach was studied with computer simulation. The obtained results show that the proposed RC-SLM scheme is able to achieve the lowest computational complexity when compared with other low complexity schemes proposed in the literature while at the same time improves the PAPR reduction performance by about 0.3 dB.

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Authors and Affiliations

  1. Department of Electronics and Electrical Communications, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt

    E. S. Hassan, M. I. Dessouky, S. A. El-Dolil & F. E. Abd El-Samie

  2. Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, UK

    Zhu Xu

  3. Department of Electrical Engineering, Faculty of Engineering, Alexandria University, Alexandria, 21544, Egypt

    S. E. El-Khamy

Authors
  1. E. S. Hassan
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  2. Zhu Xu
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  3. S. E. El-Khamy
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  4. M. I. Dessouky
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  5. S. A. El-Dolil
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  6. F. E. Abd El-Samie
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Correspondence to E. S. Hassan.

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Hassan, E.S., Xu, Z., El-Khamy, S.E. et al. Peak-to-average power ratio reduction using selective mapping with unequal power distribution. J. Cent. South Univ. 19, 1902–1908 (2012). https://doi.org/10.1007/s11771-012-1224-x

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  • DOI: https://doi.org/10.1007/s11771-012-1224-x

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