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Digital baseband predistortion of wideband power amplifiers with improved memory effects

Bondar, Dmytro and Budimir, Djuradj (2009) Digital baseband predistortion of wideband power amplifiers with improved memory effects. In: IEEE Radio and Wireless Symposium 2009 (RWS'2009), 19 - 22 Jan 2009, San Diego, California.

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Abstract

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.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Digital baseband predistortion, iterative injection, memory effects, equalization, linearization
Research Community:University of Westminster > Electronics and Computer Science, School of
ID Code:6806
Deposited On:07 May 2009 10:51
Last Modified:07 May 2009 10:51

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