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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


    Kazemian, Mohsen and Varahram, Pooria and Hashim, Shaiful Jahari and Borhanuddin, M. Ali and Farrell, Ronan (2018) A low complexity peak-to-average power ratio reduction scheme based on selected mapping and radix-II IFFT in OFDM systems. Telecommunication Systems, 67. pp. 21-30. ISSN 1018-4864

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    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 draw back of the CSLM. This paper uses the special structure of anN-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.

    Item Type: Article
    Keywords: OFDM; IFFT; PAPR; RADIX-II; CSLM;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 12687
    Identification Number: https://doi.org/10.1007/s11235-017-0312-5
    Depositing User: Ronan Farrell
    Date Deposited: 02 Apr 2020 10:45
    Journal or Publication Title: Telecommunication Systems
    Publisher: Springer
    Refereed: Yes
    URI:

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