Quantifying the Memory Effects of Power Amplifiers: EVM Closed-Form Derivations of Multicarrier Signals

Quantifying the Memory Effects of Power Amplifiers: EVM Closed-Form Derivations of Multicarrier Signals

This letter deals with the analysis of the memory effects of the power amplifier (PA) on multicarrier signals. We analytically derive the expressions of the error vector magnitude (EVM) of amplified signals jointly considering a memory polynomial PA model and clipping effects. We provide analytical...

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Veröffentlicht in:IEEE wireless communications letters 2017-02, Vol.6 (1), p.34-37
Hauptverfasser: Cheaito, Ali, Crussiere, Matthieu, Helard, Jean-Francois, Louet, Yves
Format: Artikel
Sprache:eng
Schlagworte:
Analytical models
Baseband
Computational modeling
Distortion
Engineering Sciences
EVM
Memory effects
multicarrier signals
Signal and Image processing
Transmitters
Wireless communication
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Zusammenfassung:This letter deals with the analysis of the memory effects of the power amplifier (PA) on multicarrier signals. We analytically derive the expressions of the error vector magnitude (EVM) of amplified signals jointly considering a memory polynomial PA model and clipping effects. We provide analytical EVM expressions that depend on the PA coefficients, PA order, and memory depth as well as the clipping threshold of the input signal. These analytical expressions are new general formulas which allow to predict in-band distortions at the PA output.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2016.2627037