DocumentCode
2213649
Title
Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion
Author
Ceylan, N. ; Mueller, J.E. ; Pittorino, T. ; Weigel, R.
Author_Institution
Infineon Technologies, Secure Mobile Solutions, Kastenbauerstr. 2, 81677 Munich, Germany, Phone:+498923420839
fYear
2003
fDate
Oct. 2003
Firstpage
269
Lastpage
272
Abstract
The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK, 8PSK, QAM) need linear power amplifiers in the transmission path to have good ACPR and EVM values. Linearization methods can be used to increase the linearity of the power amplifiers (PA). However, it is not reasonable to use complicated, power consuming and high cost systems. This paper presents a digital predistortion implementation for WCDMA signals using an FPGA (Field Programmable Gate Array) as DSP and investigates the application of this system in handsets. The method applied requires minimum change in the conventional transmitter path configuration but considerable PAE improvement can be achieved.
Keywords
Costs; Field programmable gate arrays; Linearity; Mobile communication; Mobile handsets; Power amplifiers; Power generation; Predistortion; Quadrature amplitude modulation; Quadrature phase shift keying;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2003 33rd European
Conference_Location
Munich, Germany
Print_ISBN
1-58053-834-7
Type
conf
DOI
10.1109/EUMA.2003.340942
Filename
4143006
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