[1]王建新,付锐.一种QAM信号载波频偏估计算法[J].南京理工大学学报(自然科学版),2003,(02):156-158.
 WangJianxin FuRui.An Algorithm of Carrier Frequency Estimation of QAM Signals[J].Journal of Nanjing University of Science and Technology,2003,(02):156-158.
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一种QAM信号载波频偏估计算法()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2003年02期
页码:
156-158
栏目:
出版日期:
2003-04-30

文章信息/Info

Title:
An Algorithm of Carrier Frequency Estimation of QAM Signals
作者:
王建新付锐
南京理工大学电子工程与光电技术学院, 南京210094
Author(s):
WangJianxin FuRui
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094
关键词:
数字通信 正交幅度调制 载波频偏估计
Keywords:
dig ital communications quadrature amplitude modulat ion carrier f requency deviat ion estimat ion
分类号:
TN913.6
摘要:
该文给出了一种QAM信号载波频偏估计算法。该算法先采用辅助数据和接收序列相乘后再进行相关运算提取出载波频偏信息 ,然后用相关序列的相位增量获得频偏估值 ,为了提高估值精度 ,对估值序列进行加权处理。该算法具有频偏估计范围大、估值准确度高的特点。计算机仿真表明频偏估计范围可达 0 .4符号率 ,估计精度接近克拉美劳界
Abstract:
This paper presents an est imat ion algorithm for the carrier frequency dev iation of quadrature amplitude modulat ion signals. The received data is first multiplied by the aided data, and then the f requency deviat ion informat ion is ext racted by the sel-f correlat ion of result ing data. The frequency deviat ion est imat ion can be obtained from the phase increment of the sel-f correlat ion sequence. A w eight sequence is used to improve the est imat ion accuracy. T he algorithm features the large est imat ion rang e for carrier frequency deviation and high est imation accuracy . The simulat ion results show that its frequency dev iation estimation range is up to±40 % of the symbol rate and its accuracy is close to CRB( Cramer-Rao Bound) .

参考文献/References:

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2 Mengali U, D. Andrea Aldo N. Synchronization techniques for dig ital receiv ers[M] . New York:Plenum Press, 1997. 88~ 89.
3 Luise M, Regg iannini R. Carr ier frequency recovery in al-l digital modems for burst-mode transmission[J] . IEEE Trans on Communications, 1995, 43( 2) : 1 169~ 1 178.
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5 Kay S M. A fast and accurate single fr equency estimato r[ J] . IEEE Trans on Acoustics, Speech, Signal Processing, 1989, 37( 12) : 1 987~ 1 990.

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备注/Memo

备注/Memo:
王建新 男 39 岁 教授
更新日期/Last Update: 2013-03-17