Lattice-based memory polynomial predistorter for wideband radio frequency power amplifiers

被引：6
作者：
Abdelhafiz, Abubaker Hassan [1 ,2 ]
Zerguine, Azzedine [1 ]
Hammi, Oualid [1 ]
Ghannouchi, Fadhel M. [2 ]
机构：
[1] King Fahd Univ Petr & Minerals, Dept Elect Engn, Dhahran 31261, Saudi Arabia
[2] Univ Calgary, iRadio Lab, Dept Elect & Comp Engn, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada
来源：
IET COMMUNICATIONS | 2014年 / 8卷 / 17期
关键词：
power amplifiers; polynomials; radiofrequency amplifiers; lattice-based memory polynomial predistorter; wideband radio frequency power amplifiers; ill-conditioning problem; memory polynomial model; nonlinear power amplifiers; resource-efficient lattice-based MP structure; MP generator; orthogonal MP model; DIGITAL PREDISTORTION; ORTHOGONAL POLYNOMIALS; IDENTIFICATION; DESIGN; MODEL;
D O I：
10.1049/iet-com.2014.0129
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This study addresses the ill-conditioning problem of the memory polynomial (MP) model with application to the predistortion of highly non-linear power amplifiers with memory effects. A resource-efficient lattice-based MP structure built using the cascade of a MP generator and a lattice predictor is proposed to overcome the ill-conditioning of the MP's data matrix. The proposed model performances are benchmarked against those of the MP model as well as the orthogonal MP model. The experimental results demonstrate the suitability of the proposed predistorter as it achieves similar performance in the time and the frequency domains compared to the MP counterpart while alleviating its ill-conditioning problem.
引用
收藏
页码：3122 / 3127
页数：6
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