A fast adaptive polynomial predistorter for power amplifiers

被引：26

作者：

Besbes, H ^{[1
]}

Le-Ngoc, T ^{[1
]}

Lin, H ^{[1
]}

机构：

[1] Legerity Inc, Austin, TX 78744 USA

来源：

GLOBECOM '01: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-6 | 2001年

关键词：

predistorter; adaptive; polynomial; MQAM; quantization noise;

D O I：

10.1109/GLOCOM.2001.965198

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, an adaptive polynomial predistortion technique is introduced to counter-balance the AM/AM and AM/PM nonlinear effects of the transmit power amplifier. Based on polar coordinates representation, the proposed adaptation method has low complexity and guarantees a fast rate of convergence. Simulation results on spectra, bit error rates, and intermodulation distortion show that with the polynomial predistorter, M-QAM can be used with a transmit power amplifier operating near saturation to achieve a highest power efficiency, while its transmitted spectrum and performance are kept close to those in a linear channel. The effects of the quantization are also presented.

引用

页码：659 / 663

页数：5

共 12 条

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