卫星通信双循环下Volterra滤波预失真算法

doi:10.3969/j.issn.1001-2400.2015.03.019

J4 ›› 2015, Vol. 42 ›› Issue (3): 109-114.doi: 10.3969/j.issn.1001-2400.2015.03.019

卫星通信双循环下Volterra滤波预失真算法

唐成凯1;廉保旺1;张玲玲2

(1. 西北工业大学电子信息学院，陕西西安 710072；
2. 西北工业大学航海学院，陕西西安 710072)

收稿日期:2014-06-09 出版日期:2015-06-20 发布日期:2015-07-27
通讯作者: 唐成凯
作者简介:唐成凯(1985- )，男，西北工业大学博士研究生，E-mail: tangchengkai99@163.com．
基金资助:
国家自然科学基金资助项目(61071216, 61071125)

Dual loop Volterra filter predistortion in satellite communication

TANG Chengkai1;LIAN Baowang1;ZHANG Lingling2

(1. School of Electronics and Information, Northwestern Polytechnical Univ., Xi'an 710072, China;
2. School of Marine Science and Technology, Northwestern Polytechnical Univ., Xi'an 710072, China)

Received:2014-06-09 Online:2015-06-20 Published:2015-07-27
Contact: TANG Chengkai

摘要/Abstract

摘要：

针对卫星功率放大器输出信号非线性化的问题，提出了一种简化预失真算法．该算法通过两个一阶截断Volterra滤波模型构建前馈循环和反馈循环，并结合两重循环调整预失真器系数来实现卫星通信发射信号线性化处理．在载波频率的提高或传输速度增大时，该算法仍可通过提高预失真器系数更新速度和精确度，从而保证卫星发射信号具有较好的线性特性，具有很好的使用价值和可操作性．

关键词: 卫星通信, 预失真, Volterra滤波, 双循环反馈

Abstract:

Aimed at the non-linear output signal of the satellite carryon amplifier, a simplified predistortion algorithm is proposed. The algorithm is implemented by two one-order truncated Volterra filter models to construct the forward and feedback loop, and we adjust the predistortion coefficients with this dual loop to linear the output of the satellite transmitted signal. With this simplied predistortion algorithm, the predistortion coefficients updating speed and accuracy could be increased, and the linear characteristic for the signal transmitted by the satellite is well guaranteed.

Key words: satellite communication, predistortion, Volterra filter, dual loop feedback

中图分类号:

TP91

唐成凯;廉保旺;张玲玲. 卫星通信双循环下Volterra滤波预失真算法[J]. J4, 2015, 42(3): 109-114.

TANG Chengkai;LIAN Baowang;ZHANG Lingling. Dual loop Volterra filter predistortion in satellite communication[J]. J4, 2015, 42(3): 109-114.

参考文献

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卫星通信双循环下Volterra滤波预失真算法

Dual loop Volterra filter predistortion in satellite communication

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