Fast Algorithms for the Delay Estimation in Digital Predistortion System

被引：5
|
作者：
Wang, Huadong [1 ]
Xue, Wei [2 ]
Ma, Hong [3 ]
机构：
[1] Chongqing Univ Posts & Telecommun CQUPT, Coll Elect & Engn, Chongqing 400065, Peoples R China
[2] China Univ Geosci, Fac Machincal & Elect Informat, Wuhan 430074, Peoples R China
[3] Huazhong Univ Sci & Technol, Dept Telecommun, Wuhan 430074, Peoples R China
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2015年 / 25卷 / 03期
关键词：
Curve fitting; delay estimation; digital predistortion (DPD); POWER-AMPLIFIERS; RF TRANSMITTERS;
D O I：
10.1109/LMWC.2015.2390532
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：
In this letter, two methods are introduced for the efficiency enhancement of the delay estimation in the digital predistortion (DPD) system. The frequency multiplication (FM) method, which has less computation complexity than traditional cross-correlation method, is used for the coarse alignment of the DPD system. The parabolic curve fitting (PCF) method, which can eliminate up-sampling and filtering operations, is used for the fine alignment. The final experiment result shows that new methods can efficiently improve the delay estimation efficiency of the DPD system with almost the same estimate precision as the traditional delay estimation methods.
引用
收藏
页码：202 / 204
页数：3
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