A Robust Companding Scheme against Nonlinear Distortion of High Power Amplifiers 


Vol. 32,  No. 11, pp. 1079-1086, Nov.  2007


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  Abstract

In this paper, we propose a CCP (Companding Combined with Predistorter) scheme that maintains BER (Bit Error Rate) performance of systems, while effectively reducing PAPR (Peak-to-Average Power Ratio) of OFDM (Orthogonal Frequency Division Multiplexing) signals, independent of nonlinear property of HPAs (High Power Amplifiers). The proposed CCP scheme combines the conventional companding scheme proposed by the authors with the predistorter, in order to prevent degradation of BER performance caused by signal distortion from nonlinear property of the HPA and the compression property of the companding scheme. Hence, the proposed scheme effectively reduces the PAPR and simultaneously maintains the BER performance, independent of nonlinear property of the HPA. Simulation results showed that the proposed CCP scheme provides the lowest total degradation for all the modulations, when comparing with the companding scheme proposed by Wang and the clipping scheme.

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  Cite this article

[IEEE Style]

J. Kim, S. Han, Y. Shin, "A Robust Companding Scheme against Nonlinear Distortion of High Power Amplifiers," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 11, pp. 1079-1086, 2007. DOI: .

[ACM Style]

Jaewoon Kim, Seungwoo Han, and Yoan Shin. 2007. A Robust Companding Scheme against Nonlinear Distortion of High Power Amplifiers. The Journal of Korean Institute of Communications and Information Sciences, 32, 11, (2007), 1079-1086. DOI: .

[KICS Style]

Jaewoon Kim, Seungwoo Han, Yoan Shin, "A Robust Companding Scheme against Nonlinear Distortion of High Power Amplifiers," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 11, pp. 1079-1086, 11. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880