Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform

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Abstract

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) causing a reduction in power efficiency. Nonlinear companding techniques are widely used to reduce the peak-to-average-power ratio (PAPR). In this paper, we have evaluated the performance of different non-linear companding techniques to reduce the PAPR in FBMC/OQAM system while achieving good Bit Error rate. We assessed the hyperbolic tangent, the error function, the logarithmic function, the A-law, and Mu-law companding techniques. It is found that the best companding function is the Mu-law.

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Shaheen, I. A., Zekry, A., Newagy, F., & Ibrahim, R. (2019). Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform. ICT Express, 5(1), 41–46. https://doi.org/10.1016/j.icte.2018.01.017

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