Frequency synchronization apparatus
US8275086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Oct 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0087
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for frequency synchronization is proposed to detect a synchronization signal from the baseband signals. It is featured that three types of detection values are introduced to detect whether the synchronization signal is received or not. More particularly, the claimed frequency synchronization apparatus provides at least one signal power generator for receiving a predetermined number of symbols of the baseband signals, and further calculating an average quality value therefore. Further, the apparatus includes a signal selector for producing a first detection value according to the average quality value. Still further, the apparatus provides a decision unit to produce a second detection value. After that, a signal processor inside the decision unit is used to calculate a third detection value as combining the first detection value and the second detection. Consequently, the decision unit particularly decides whether the synchronization signal is received or not in reference with the third detection value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.