发明名称 |
Method and apparatus for estimating frequency deviation |
摘要 |
The invention provides a method and an apparatus for estimating frequency deviation, the method comprising: after receiving a sub-frame, transforming a downlink synchronized code of the sub-frame to a frequency domain, and performing a correlation operation between the transformed downlink synchronized code and a local frequency domain synchronized code to obtain a conjugate downlink synchronized code sequence; judging a location of a maximum value in the conjugate downlink synchronized code sequence, and calculating a frequency deviation value according to the location of the maximum value. The estimating method provided in the invention can realize a stable work with no need of a precise sampling value location, an accurate timing synchronization, or even obtaining the information for the multi-path distribution and locations. |
申请公布号 |
US8867443(B2) |
申请公布日期 |
2014.10.21 |
申请号 |
US201013258448 |
申请日期 |
2010.11.17 |
申请人 |
ZTE Corporation |
发明人 |
Qiu Ning;Li Qiang;Zeng Wenqi;Yu Tiankun;Liu Zhongwei;Xing Yannan;Liang Lihong;Li Liwen;Lin Feng;Chu Jintao |
分类号 |
H04W56/00;H04B1/7087 |
主分类号 |
H04W56/00 |
代理机构 |
Ling and Yang Intellectual Property |
代理人 |
Wu Ling;Yang Stephen;Ling and Yang Intellectual Property |
主权项 |
1. A method for estimating frequency deviation, the method comprising the following steps that are performed by a user equipment (UE):
after receiving a sub-frame, transforming a downlink synchronized code of the sub-frame to a frequency domain, and performing a correlation operation between the transformed downlink synchronized code and a local frequency domain synchronized code to obtain a conjugate downlink synchronized code sequence; and judging a location of a maximum value in the conjugate downlink synchronized code sequence, and calculating a frequency deviation value according to the location of the maximum value; wherein, the local frequency domain synchronized code is a group of synchronized code sequences influenced by different frequency deviations. |
地址 |
Shenzhen, Guangdong CN |