Title :
Adaptive predistorter for power amplifier based on real-time estimation of envelope transfer characteristics
Author :
Han, Jae-Hee ; Chung, Tasik ; Nam, Sangwook
Author_Institution :
Appl. Electromagn. Lab., Seoul Nat. Univ., South Korea
fDate :
12/9/1999 12:00:00 AM
Abstract :
A new adaptation technique for digital predistortion is presented. The proposed method employs the real-time input and output signals of a high power amplifier (HPA) to estimate the complex envelope transfer characteristics. Therefore, a look-up table update can be performed without Interrupting the normal transmission of messages through an HPA
Keywords :
adaptive signal processing; electric distortion; power amplifiers; table lookup; transfer functions; adaptive predistorter; digital predistortion; envelope transfer characteristics; high power amplifier; look-up table update; real-time estimation; real-time input signals; real-time output signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991483
