Title :
Digital predistortion of concurrent dual-band power amplifier based on two-dimensional multi-branch DPD
Author :
Younes, M. ; Kwan, Andrew ; Ghannouchi, Fadhel M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada
Abstract :
This paper presents a novel two-dimensional multi-branch model for the dynamic behavioral modeling and digital predistortion of dual-band power amplifiers (PAs) operated in concurrent multi-band, multi-standard mode. The model performance was validated by linearizing a dual-band class AB PA, driven by different bandwidth LTE and WCDMA signals. The measurement results showed the suppression of the spectral regrowth due to the intermodulation and cross modulation effects in concurrent dual-band PAs, and also showed significant improvement in terms of accuracy and complexity when compared to state-of-the-art models.
Keywords :
Long Term Evolution; UHF power amplifiers; code division multiple access; intermodulation distortion; linearisation techniques; LTE signal; WCDMA signal; class AB power amplifier; concurrent dual band power amplifier; cross modulation effect; digital predistortion; dynamic behavioral modeling; intermodulation effect; power amplifier linearization; spectral regrowth; twodimensional multibranch DPD; Computational modeling; Dual band; Mathematical model; Multiaccess communication; Predistortion; Radio frequency; Transmitters;
Conference_Titel :
Electrical and Computer Engineering (CCECE), 2014 IEEE 27th Canadian Conference on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4799-3099-9
DOI :
10.1109/CCECE.2014.6900997
