Title :
Baseband derived RF digital predistortion
Author :
Kim, W.J. ; Cho, K.J. ; Stapleton, S.P. ; Kim, J.H.
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada
fDate :
4/13/2006 12:00:00 AM
Abstract :
A unique baseband derived RF predistortion system which uses lookup table coefficients extracted at baseband that directly RF envelope modulate a quadrature vector modulator is presented. The primary advantages of this architecture are that it combines the narrowband advantage of envelope predistortion with the accuracy of baseband predistortion.
Keywords :
distortion; modulators; power amplifiers; radiofrequency amplifiers; Doherty power amplifier; baseband derived RF digital predistortion; envelope predistortion; lookup table; quadrature vector modulator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060606
