一种用于FSK信号的快速载波频偏估计及校正方法 | |
段茂强; 杨志家; 王剑; 董策; 谢闯 | |
2016-05-25 | |
专利国别 | 中国 |
专利号 | CN105610745A |
专利类型 | 发明 |
产权排序 | 1 |
权利人 | 中国科学院沈阳自动化研究所 |
其他题名 | Method of quickly estimating and correcting carrier frequency offset for FSK (Frequency Shift Keying) signal |
中文摘要 | 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。 |
是否PCT专利 | 否 |
英文摘要 | 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. |
申请日期 | 2014-11-25 |
语种 | 中文 |
专利申请号 | CN201410686680.7 |
专利代理 | 沈阳科苑专利商标代理有限公司 21002 |
内容类型 | 专利 |
源URL | [http://ir.sia.cn/handle/173321/19082] |
专题 | 沈阳自动化研究所_工业控制网络与系统研究室 |
推荐引用方式 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. CN105610745A. 2016-05-25. |
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