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Modelling and identification of a nonlinear power-amplifier with memory for nonlinear digital adaptive pre-distortion

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2 Author(s)
Aschbacher, E. ; Inst. of Commun. & Radio-Frequency Eng., Vienna Univ. of Technol., VA, USA ; Rupp, M.

In this paper a comparison between a memoryless nonlinear power amplifier model and a special nonlinear model with memory (Wiener-model) based on measurements on a power amplifier is presented. With moderate signal bandwidths of only 2 MHz the nonlinear model with memory outperforms the memoryless model. The amplifier model is intended to be used for pre-distortion purposes. Furthermore, an adaptive algorithm for finding the model parameters is presented.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003