|本期目录/Table of Contents|

[1]史 聃,吕星哉,陈 明,等. 数字预失真系统反馈通道增益平坦度的补偿[J].电子设计工程,2012,(19):103-105.
 SHI Dan,LV Xing-zai,CHEN Ming,et al. Analysis and compensation of feedback gain flatness in digital pre-distortion system[J].SAMSON,2012,(19):103-105.
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 数字预失真系统反馈通道增益平坦度的补偿(PDF)
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《电子设计工程》[ISSN:1674-6236/CN:61-1477/TN]

卷:
期数:
2012年19期
页码:
103-105
栏目:
网络与通信
出版日期:
2012-10-05

文章信息/Info

Title:
 Analysis and compensation of feedback gain flatness in digital pre-distortion system
文章编号:
1674-6236(2012)19-0103-03
作者:
 史 聃 吕星哉 陈 明 徐 洋
 
(上海贝尔股份有限公司 上海 201206)
Author(s):
 SHI Dan LV Xing-zai CHEN Ming XU Yang
 
(Alcatel-Lucent Shanghai Bell Company, Shanghai 201206, China)
关键词:
 数字预失真 增益平坦度 最小二乘法 Matlab工具箱
Keywords:
 Digital Pre-Distortion (DPD) gain flatness least squares Matlab tool box
分类号:
TP302
DOI:
-
文献标志码:
A
摘要:
 针对数字预失真系统对反馈链路平坦度的要求,提出一种在不断开模拟链路的前提下,采用单音测量WCDMA&LTE混模基站射频拉远单元反馈链路的增益平坦度,并采用最小二乘法,分别拟合射频、本振和中频的增益的方法。采用MATLAB工具产生滤波器系数,在基本不增加复杂度的基础上,通过DPD软件离线补偿中频的增益不平坦度。实际应用取得良好的补偿效果。
Abstract:
 The gain flatness of feedback chain is a key feature in a WCDMA&LTE mixed mode base-station Radio Remote Head (RRH). The flatness is measured using CW without destroying the integrality of the analog chains. The gains of RF, LO and IF are calculated separately with least squares curve fitting algorithm. The coefficients of compensation filter are generated using MATLAB tools. The flatness of IF is compensated offline in DPD software with little additional complexity. The method works well in practical system.

参考文献/References:

 
[1] LEI Ding. A robust digital baseband predistorter constructed using memory polynomials[J]. IEEE trans. on Comm,2004,52 (1):159-165.
[2] Agilent Technologies. ESG矢量信号发生器用户指南[EB/OL]. http://cp.literature.agilent.com/litweb/pdf/E4400-90554.pdf.
[3] 黄云青. 数值计算方法[M]. 北京:科学出版社,2010.
[4] 张声雷. 简明微积分[M]. 合肥:中国科学技术大学出版社,2005.
[5] 3GPP. TS36.141. Base Station (BS) conformance testing [EB/OL]. http://www.3gpp.com/.
[6] 王世一. 数字信号处理[M]. 北京:北京理工大学出版社, 2006.
[7] MATLAB Signal Processing Toolbox[EB/OL]. https://www.mathworks.com.

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备注/Memo

备注/Memo:
 收稿日期:2012-06-05 稿件编号:201206030
基金项目:国家科技重大专项(2012ZX03001-010)
作者简介:史 聃(1981—),男,江苏徐州人,博士。研究方向:移动宽带通信中数字预失真技术。
更新日期/Last Update: 2012-10-24