5th International ICST Conference on Wireless Internet

Research Article

Distribution of peak-to-average power ratio and its applications in OFDM systems with unequal power allocation

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  • @INPROCEEDINGS{10.4108/ICST.WICON2010.8618,
        author={Tao Jiang and Daiming Qu and Peng Gao},
        title={Distribution of peak-to-average power ratio and its applications in OFDM systems with unequal power allocation},
        proceedings={5th International ICST Conference on Wireless Internet},
        publisher={IEEE},
        proceedings_a={WICON},
        year={2010},
        month={4},
        keywords={Bit error rate Design engineering Fading Genetic expression High power amplifiers Intermodulation distortion OFDM Partial transmit sequences Peak to average power ratio Power engineering and energy},
        doi={10.4108/ICST.WICON2010.8618}
    }
    
  • Tao Jiang
    Daiming Qu
    Peng Gao
    Year: 2010
    Distribution of peak-to-average power ratio and its applications in OFDM systems with unequal power allocation
    WICON
    IEEE
    DOI: 10.4108/ICST.WICON2010.8618
Tao Jiang1,*, Daiming Qu1, Peng Gao2,*
  • 1: Department of Electronics and Information Engineering, Huazhong University of Science and Technology, China
  • 2: Division of Research, China Mobile Group Design Institute Co., Ltd, China
*Contact email: Tao.Jiang@ieee.org, gaopeng@cmdi.chinamobile.com

Abstract

In this paper, we propose a general expression of the peak-to-average power ratio (PAPR) distribution in orthogonal frequency division multiplexing (OFDM) systems with unequal power allocation strategy, which is based on the extreme value theory for Chi-squared-2 process. The proposed general distribution of the PAPR depends on the number of the subcarriers, distribution of the power allocation and the amount of the total transmission power. To validate the analytical results, we conduct extensive experiments and the numerical results also show that the proposed distribution of the PAPR has a good agreement with that of OFDM systems with unequal power allocation strategy. Finally, we show an example of that the proposed distribution of the PAPR could be directly applied to design the OFDM systems with selective mapping technique to reduce the PAPR.