NDLI: Extended Hammerstein model for RF power amplifier behavior modeling

Content Provider	IEEE Xplore Digital Library
Author	Mkadem, F. Boumaiza, S.
Copyright Year	2009
Description	Author affiliation: EmRG Research Group, Dep. Of Electrical and Computer Engineering, University of Waterloo, ON, 200 University Ave W., Waterloo, ON N2L-3G1, Canada (Mkadem, F.; Boumaiza, S.)
Abstract	this paper presents a novel Extended Hammerstein model for predicting the dynamic nonlinearity of wideband Radio Frequency Power Amplifier (RFPA). This new model tackles the inaccuracy of Conventional Hammerstein scheme in accounting for the short term memory effects of the RFPA by adding an extra branch. For that, an error signal between the output and the input signal of the memoryless submodel is first computed and processed by an additional filter. The filtered error signal is then post-injected at the output of the model. This extra modeling mechanism leads to remarkable accuracy when modeling two different RFPAs operating at different biasing points and driven with 4 Carrier (4C) WCDMA signals. Despite its simple structure and identification algorithm, the Extended Hammerstein model demonstrated excellent capacity in mimicking the dynamic characteristics (AM/AM & AM/AM) and the output signal spectrum of the RFPA under test.
Starting Page	1066
Ending Page	1069
File Size	453654
Page Count	4
File Format	PDF
ISBN	9781424447480
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-29
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	EUMA
Subject Keyword	Radio frequency Power amplifiers Radiofrequency amplifiers Signal processing Filters OFDM modulation Nonlinear distortion Polynomials Broadband amplifiers Multiaccess communication
Content Type	Text
Resource Type	Article

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