Method and apparatus for estimating frequency deviation
US8867443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2010 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7087
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.