A new adaptive baseband pre-distortion algorithm for linearization of power amplifiers, application to EDGE-GSM transmitters

被引：0

作者：

Baudoin, G. ^{[1
]}

Jardin, P. ^{[1
]}

机构：

[1] Signal Processing Department, ESIEE, Pole E.H.F.P. Marne La Vallee, BP 99, 93162, Noisy Le Grand Cedex, France

来源：

System and Control: Theory and Applications | 2000年

关键词：

Adaptive predistortion - Baseband signals - Pre-distortion techniques;

D O I：

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中图分类号：

学科分类号：

摘要：

This paper presents a new adaptive pre-distortion algorithm for linearization of Power Amplifiers and its application to EDGE-GSM transmitters. The pre-distortion system is polynomial. The criterion is minimisation of EVM (Error Vector Magnitude) evaluated on equalised signal. The analytic expression of the gradient of the criterion has been calculated. A stochastic gradient algorithm is applied using this analytic expression. The method has been tested on a class AB power amplifier with a baseband signal corresponding to EDGE-GSM Standard with 3π/8 8-PSK modulation. A special equaliser has been designed for EDGE signals.

引用

页码：235 / 238