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MILA - A noise mitigation technique for RF power amplifier linearization

Per N. Landin (Institutionen för signaler och system, Kommunikationssystem) ; Annika Mayer ; Thomas Eriksson (Institutionen för signaler och system, Kommunikationssystem)
2014 IEEE 11th International Multi-Conference on Systems, Signals and Devices, SSD 2014 (2014)
[Konferensbidrag, refereegranskat]

Standard indirect learning architecture (ILA) based methods for estimating the parameters in digital pre-distortion produce biased estimates of the parameters due to noise. This paper proposes using a direct model of the power amplifier to generate a noise-free estimate of the output signal and subsequently use this estimated signal to extract the parameters of the pre-distorter using the ILA. Measurement results shows that this technique improves the performance of the pre-distorter for all signal-to-noise ratios, but especially in the range of 20-30 dB signal-to-noise ratio.

Nyckelord: noise , nonlinear distortion , Power amplifier , predistortion



Denna post skapades 2014-07-01. Senast ändrad 2016-02-01.
CPL Pubid: 199957

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur