DocumentCode
698430
Title
A robust non-uniform LUT indexing method in digital predistortion linearization of RF power amplifiers
Author
Saied-Bouajina, Sonia ; Jaidane-Saidane, Meriem ; Boumaiza, Slim ; Ghannouchi, Fadhel
Author_Institution
Unite Signaux et Syst., Ecole Nat. d´Ing. de Tunis, Tunis, Tunisia
fYear
2005
fDate
4-8 Sept. 2005
Firstpage
1
Lastpage
4
Abstract
A new monotonic companding function is proposed for non-uniform lookup table (LUT) indexation used in digital predistortion (PD) of Radio Frequency (RF) power amplifiers (PA) under wideband signals. This function, designed to be robust to the input signal statistics variations, overcomes the disadvantages of optimal indexation which depends on the input back-off (IBO) operation point of the PA. Simulations results show the robustness of the proposed companding function to IBO variations, comparing with conventional LUT indexing techniques, namely power, amplitude and optimal.
Keywords
radiofrequency power amplifiers; table lookup; RF power amplifiers; digital predistortion linearization; input back-off operation; nonuniform lookup table indexation; robust nonuniform LUT indexing method; Gain; Indexing; Predistortion; Radio frequency; Robustness; Sensitivity; Table lookup;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Conference, 2005 13th European
Conference_Location
Antalya
Print_ISBN
978-160-4238-21-1
Type
conf
Filename
7078015
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