Spectral analysis of GFDM modulated signal under nonlinear behavior of power amplifier
作者： Amirhossein Mohammadian , Abbas Mohammadi , Abdolali Abdipour , Mina Baghani
DOI: 10.1007/S11276-020-02403-2
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摘要: Generalized frequency division multiplexing (GFDM) is a flexible non-orthogonal waveform candidate for 5G which can offer some advantages such as low out-of-band emission and high spectral efficiency. This paper investigates the effects of nonlinear behavior practical power amplifier (PA) on GFDM spectrum. A closed form expression density (PSD) signal extracted. Then, PSD at output PA function input coefficients polynomial model derived. In addition, adjacent channel (ACP) ACP ratio, two important performance metrics, are evaluated. The simulation results confirm accuracy derived analytical expressions. Moreover, to validate modulation after PA, it compared with orthogonal modulation.
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