A New Digital Predistortion Based On B spline Function With Compressive Sampling Pruning

被引：0
|
作者：
Liu, Cen [1 ]
Luo, Laiwei [1 ]
Wang, Jun [1 ]
Zhang, Chao [1 ]
Pan, Changyong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Beijing, Peoples R China
来源：
2022 INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING, IWCMC | 2022年
关键词：
power amplifier; digital predistortion; spline; Volterra series; compressive sampling; VOLTERRA;
D O I：
10.1109/IWCMC55113.2022.9825005
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
A power amplifier(PA) is inherently nonlinear device and is used in a communication system widely. Due to the nonlinearity of PA, the communication system is hard to work well. Digital predistortion (DPD) is the way to solve this problem. Using Volterra function to fit the PA is what most DPD solutions do. However, when it comes to wideband signal, there is a deduction on the performance of the Volterra function. In this paper, we replace the Volterra function with B-spline function which performs better on fitting PA at wideband signal. And the other benefit is that the orthogonality of coding matrix A could be improved, enhancing the stability of computation. Additionally, we use compressive sampling to reduce the complexity of the function model.
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页码：1200 / 1205
页数：6
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