Title :
MP/LUT baseband digital predistorter for wideband linearisation
Author :
Li, Fan ; Feuvrie, B. ; Wang, Yannan ; Chen, Weijie
Author_Institution :
Ecole Polytech., LUNAM Univ., Nantes, France
Abstract :
A new memory polynomial/look-up table (MP/LUT) baseband digital predistorter (DPD) based on direct learning architecture is proposed for power amplifier (PA) linearisation in wideband applications. The main advantages of this DPD are high simplicity and the robust modellisation of the PA´s behaviour provided by the MP model. Measurements are realised on a test bench using the PA ZFL-2500 driven by a 16QAM modulated signal with 3.84´MHz bandwidth at the carrier´s centre frequency of 1.8´GHz.
Keywords :
UHF amplifiers; linearisation techniques; microwave power amplifiers; polynomials; quadrature amplitude modulation; table lookup; wideband amplifiers; 16QAM modulated signal; MP-LUT baseband DPD; PA ZFL-2500 test bench; PA linearisation; bandwidth 3.84 MHz; direct learning architecture; frequency 1.8 GHz; memory polynomial-look-up table baseband digital predistorter; power amplifier linearisation; robust modellisation; wideband linearisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2254
