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一种用于FSK信号的快速载波频偏估计及校正方法
Alternative TitleMethod of quickly estimating and correcting carrier frequency offset for FSK (Frequency Shift Keying) signal
段茂强; 杨志家; 王剑; 董策; 谢闯
Department工业控制网络与系统研究室
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司 21002
Country中国
Subtype发明
Status有权
Abstract

本发明涉及一种用于FSK信号的快速载波频偏估计及校正的方法。该方法通过输入经过射频模块产生的低中频I/Q两路信号,与DDS产生的信号进行相关运算及滤波处理,再进行均值运算,在事先存入的均值-频偏查找表中进行对应查询即可对频率偏差估计估计值,再把这个值反馈给前面的DDS就可以进行频偏消除完成频偏校正过程。本发明载波频偏估计速度快,在进行频偏校正后可以提高接收机的整体性能。

Other Abstract

The invention relates to a method of quickly estimating and correcting carrier frequency offset for a FSK (Frequency Shift Keying) signal. According to the method, through inputting two ways of low and medium-frequency I/Q signals generated via a radio frequency module, correlation operation and filter processing are carried out on the two ways of signals and signals generated by a DDS, mean operation is then carried out, corresponding querying is carried out in a pre-stored mean-value-frequency offset lookup table, a frequency offset estimation value is obtained, the value is then fed back to the front DDS for frequency offset elimination and thus, a frequency offset correction process is completed. The frequency offset estimation speed is fast, and the overall performance of a receiver can be improved after frequency offset correction is carried out.

PCT Attributes
Application Date2014-11-25
2016-05-25
Date Available2018-11-27
Application NumberCN201410686680.7
Open (Notice) NumberCN105610745A
Language中文
Contribution Rank1
Document Type专利
Identifierhttp://ir.sia.cn/handle/173321/19082
Collection工业控制网络与系统研究室
Affiliation中国科学院沈阳自动化研究所
Recommended Citation
GB/T 7714
段茂强,杨志家,王剑,等. 一种用于FSK信号的快速载波频偏估计及校正方法[P]. 2016-05-25.
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