Ceylan, N. ; Mueller, J.E. ; Pittorino, T. ; Weigel, R. (2003) Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion. In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
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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 o 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.
| Document type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Area 09 - Ingegneria industriale e dell'informazione > ING-INF/01 Elettronica |
| Depositato da: | CIB Staff |
| Depositato il: | 17 Jun 2004 |
| Last modified: | 16 May 2011 13:31 |
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