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Digital baseband predistortion of wideband power amplifiers with improved memory effects

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2 Author(s)
Bondar, D. ; Wireless Commun. Res. Group, Univ. of Westminster, London ; Budimir, D.

A new digital baseband predistortion of wideband power amplifiers with improved memory effects is presented and investigated. Distortion compensation is increased by implementing proposed iterative digital baseband injection technique. Frequency-domain equalization in baseband is developed to minimize memory effects. The non-linear and memory parts of the proposed linearizer are implemented in baseband without additional feedback loop. The spectral regrowth improvement of 20 dB for a 5-MHz 16-QAM signal and a 10 dB reduction of 8 MHz offset adjacent channel power ratio (ACPR) are achieved. Experimental results are presented to validate the argument.

Published in:
Radio and Wireless Symposium, 2009. RWS '09. IEEE

Date of Conference: 18-22 Jan. 2009

Page(s):
284 - 287
E-ISBN :
978-1-4244-2699-7
Print ISBN:
978-1-4244-2698-0
INSPEC Accession Number:
10660966
Conference Location :
San Diego, CA
Digital Object Identifier :
10.1109/RWS.2009.4957334
Product Type:
Conference Publications

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