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

作　　者：YU Cui-ping LIU Yuan-an DU Tian-jiao LI Shu-lan 

机构地区：[1]School of Electronic Engineering,Beijing University of Posts and Telecommtmications,Beijing 100876,Chma

出　　处：《The Journal of China Universities of Posts and Telecommunications》2012年第2期43-47,共5页中国邮电高校学报（英文版）

基　　金：supported by the National Science and Technology Major Project (2010ZX03007-003-04)

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.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 

分 类 号：TN722.75[电子电信—电路与系统] TG139.6[一般工业技术—材料科学与工程]