[1]蒋立平,付锐,吉训生.全数字载波捕获算法[J].南京理工大学学报(自然科学版),2002,(01):15-19.
　JiangLiping FuRui JiXunsheng.An Algorithm of All-digital Carrier Acquisition[J].Journal of Nanjing University of Science and Technology,2002,(01):15-19.
点击复制

全数字载波捕获算法()
分享到：

《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2002年01期
页码:
15-19
栏目:
出版日期:
2002-02-28

文章信息/Info

Title:
An Algorithm of All-digital Carrier Acquisition
作者:
蒋立平; 付锐; 吉训生
南京理工大学电子工程与光电技术学院, 南京210094
Author(s):
JiangLiping FuRui JiXunsheng
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094
关键词:
频率估计;  相位估计;  最大似然函数
Keywords:
f requency est imate;  phase est imate;  max imum likelihood est imate
分类号:
TN913.6
摘要:
在数字化接收机中 ,通常采用最大似然估计算法来获得载波频移和相移的估值 ,但最大化非线性似然函数的计算量非常大 ,不易实现 ,该文提出一种通过将似然函数线性化来快速捕获载波的算法 ,大大减少了计算量 ,仿真结果表明 ,其性能接近克拉美劳界 ,且捕获频率范围宽 ,易于DSP实现 ,适合应用于全数字接收机
Abstract:
The Maximum Likehood ( ML) estimation algorithm was usually used in the digital receivers to obtain the est imation of frequency-shift and phase-shift of carrier wave. Based on linear ML funct ion, an algorithm of rapid capturing carrier w ave w hich reduced the calculation great ly than the a-l gorithm of nonlinear ML funct ion was put forward.The emulation results show ed that its performance w as closed to the Cramer-Rao Bound ( CRB) , the acquistion ranges of frequency was broad, the algorithm w as simple and easy for implementation, and w as suitable for an al-l digital receiver.

参考文献/References:

1 Fitz M P. Further results in the fast estimation of a sing le frequency . IEEE Trans Commun, 1994,42: 862~ 864
2 Luise M, Regg iannini R. Carr ier frequency recovery in al-l dig ital mo dems for burst mode transmission.IEEE Tr ans Commun, 1995, 43: 1 169~ 1 178
3 Mengali U, Morelli M. Data- aided frequency estimation for burst dig ital transmission. IEEE Tr ansCommun, 1997, 45: 23~ 25
4 Tretter S A. Estimating t he frequency of noisy sinusoid by linear r eg ression. IEEE Trans InformTheory , 1985, 31: 832~ 835
5 Kay S. A fast and accurate single frequency estimator. IEEE Trans Acoust, Signal Processing,1989, 37: 1 987~ 1 990
6  Shawyuan W, Georghiades C N. Rapid carrier acquisition fr om baud- r ate samples. IEEE Tr ansCommun, 1999, 47( 4) : 631~ 641

相似文献/References:

[1]何一鸣,张刚兵,钱显毅.正弦信号频率估计算法研究[J].南京理工大学学报(自然科学版),2012,36(06):0.
　HE Yi ming,ZHANG Gang bing,QIAN Xian yi.Frequency Estimation Algorithm of Sinusoidal Signals[J].Journal of Nanjing University of Science and Technology,2012,36(01):0.

备注/Memo

备注/Memo:
蒋立平  男  46 岁  副教授
更新日期/Last Update: 2002-02-28