Digitally controlled RF predistortion with digital predictor for feedforward delay compensation

In this paper the adverse effect of lookup table indexing delay on the correction ability of a RF-predistorter is discussed and different digital methods to alleviate this are presented. For what we know the first implementation of a FIR predictor based feedforward delay compensated digital predisto...

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Hauptverfasser:	Teikari, I., Vankka, J., Halonen, K.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Baseband Delay effects Digital control Distortion Power amplifiers Predistortion Radio frequency RF signals Table lookup Voltage control
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creator	Teikari, I. Vankka, J. Halonen, K.
description	In this paper the adverse effect of lookup table indexing delay on the correction ability of a RF-predistorter is discussed and different digital methods to alleviate this are presented. For what we know the first implementation of a FIR predictor based feedforward delay compensated digital predistorter is presented and measured. The measurements show that the prediction improved the ACP by nearly 10 dB.
doi_str_mv	10.1109/MWSYM.2005.1517147
format	Conference Proceeding
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source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Baseband Delay effects Digital control Distortion Power amplifiers Predistortion Radio frequency RF signals Table lookup Voltage control
title	Digitally controlled RF predistortion with digital predictor for feedforward delay compensation
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