New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

doi:10.1016/S1005-8885(11)60244-6

中国邮电高校学报(英文) ›› 2012, Vol. 19 ›› Issue (2): 43-47.doi: 10.1016/S1005-8885(11)60244-6

New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

于翠屏,刘元安,都天骄,Li Shu-lan

北京邮电大学

收稿日期:2011-06-20 修回日期:2011-12-20 出版日期:2012-04-30 发布日期:2012-04-17
通讯作者: 于翠屏 E-mail:yucuiping@bupt.edu.cn
基金资助:
This work was supported by the National Science and Technology Major Project (2010ZX03007-003-04).

New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2011-06-20 Revised:2011-12-20 Online:2012-04-30 Published:2012-04-17
Contact: Cui-ping Yu E-mail:yucuiping@bupt.edu.cn
Supported by:
This work was supported by the National Science and Technology Major Project (2010ZX03007-003-04).

摘要/Abstract

摘要：

A triangular memory polynomial (TMP) predistorter is presented in this paper to linearize a power amplifier’s nonlinear with memory effects. Compared with the traditional memory polynomial (MP) predistorter, the coefficients of TMP predistorter is reduced more than 75%, which can effectively decrease the implementation complexity. The coefficients of predistorter are directly extracted from an offline system identification process by an open-loop structure in our approach. Several signals with data rate 5 MHz, 10 MHz, 15 MHz and 20 MHz are used to verify the performance of the proposed predistorter. Experimental results show that the proposed TMP predistorter and the traditional MP predistorter almost have the same performance.

关键词:

power amplifier, predistortion, memory effects, memory polynomial

Abstract:

Key words:

power amplifier, predistortion, memory effects, memory polynomial

参考文献

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New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

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