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Digital Predistortion Parameter Identification for RF Power Amplifiers Using Real-Valued Output Data

Jessica Chani Cahuana (Institutionen för signaler och system, Kommunikationssystem ; GigaHertz Centrum) ; Thomas Eriksson (Institutionen för signaler och system, Kommunikationssystem ; GigaHertz Centrum ; Institutionen för elektroteknik, Kommunikationssystem) ; Christian Fager (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum) ; Mustafa Özen (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum)
IEEE Transactions on Circuits and Systems - II - Express Briefs (1549-7747). Vol. 64 (2017), 10, p. 1227-1231.
[Artikel, refereegranskad vetenskaplig]

This brief presents a novel digital predistortion (DPD) parameter identification technique that requires only the acquisition of either the in-phase (I) or the quadrature (Q) component of the power amplifier (PA) output signal. To this end, an approach that allows us to estimate the parameters of a model using only one of the IQ components of the model output is presented. Based on experimental results, it is shown that the proposed real-valued measurements based technique can offer similar linearization capabilities as its complex-valued counterparts. The experimental results also indicate that the proposed technique can be used in combination with other techniques that focus on reducing the speed of analog-to-digital converters (ADCs)

Nyckelord: Predistortion, Bandwidth, Receivers, Semiconductor device measurement, Parameter estimation, Circuits and systems, Iterative learning control, Analog-to-digital converter, digital predistortion, iterative learning control, least squares approximation, nonlinear distortion, power amplifier

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Denna post skapades 2017-08-07. Senast ändrad 2017-12-05.
CPL Pubid: 250941


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