Power Efficient OFDM System Using PTS and Pre-distorter Method 


Vol. 27,  No. 9, pp. 861-868, Sep.  2002


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  Abstract

Many pre-distortion methods reduced high PAPR in the OFDM(Orthogonal Frequency Division Modulation) to low PAPR. However, OFDM system inefficiency is increased when the size of constellation is large such as 64-QAM. This paper proposes and evaluates LUT based pre-distorter combined with PTS method to reduce OFDM system inefficiency, which was increased by large size of constellation. Threshold calculated from the probability characteristics of the OFDM signal and 2ι partition interpolation reduce computational complexity of the proposed method without performance degradation. As a result, it is shown that the proposed method using LUT size 8 with subblock size 4 reduced nearly 12dB BO in l6-QAM and LUT size 16 with subblock size 4 reduced nearly 14dB BO in 64-QAM.

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  Cite this article

[IEEE Style]

O. Kwon and Y. Ha, "Power Efficient OFDM System Using PTS and Pre-distorter Method," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 861-868, 2002. DOI: .

[ACM Style]

Oh-Ju Kwon and Yeong-Ho Ha. 2002. Power Efficient OFDM System Using PTS and Pre-distorter Method. The Journal of Korean Institute of Communications and Information Sciences, 27, 9, (2002), 861-868. DOI: .

[KICS Style]

Oh-Ju Kwon and Yeong-Ho Ha, "Power Efficient OFDM System Using PTS and Pre-distorter Method," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 861-868, 9. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880