Dual-band predistortion linearization of an envelope modulated power amplifier operated in concurrent multi-standard mode

This paper reports a dual band predistortion linearization technique for an envelope modulator based transmitter operated in concurrent multi-band, multi-standard mode driven by 20 MHz bandwidth LTE and 4 carrier 20 MHz bandwidth WCDMA signals. To reduce the speed of the composite envelope path, a b...

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Bibliographic Details
Main Authors: Kwan, Andrew K., Younes, Mayada, Silong Zhang, Wenhua Chen, Darraji, Ramzi, Helaoui, Mohamed, Ghannouchi, Fadhel M.
Format: Conference Proceeding
Language:English
Subjects:
Baseband
digital predistortion
Dual band
dual-band linearization
envelope tracking power amplifier
MIMO
Multiaccess communication
Radio frequency
Spread spectrum communication
Transmitters
Volterra series
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Summary:This paper reports a dual band predistortion linearization technique for an envelope modulator based transmitter operated in concurrent multi-band, multi-standard mode driven by 20 MHz bandwidth LTE and 4 carrier 20 MHz bandwidth WCDMA signals. To reduce the speed of the composite envelope path, a bandwidth reduced combined envelope signal is used for the dynamic supply of the dual-band PA. Measurement results using the dual-band linearization technique show an increase of over 10 dB in ACPR and 15% in average operating efficiency.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2014.6848536