Method and system for synchronizing in a frequency shift keying receiver
US7203254B2 · kind B2 · utility
8Cited by
20References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a method and apparatus for achieving timing synchronization during signal acquisition and for achieving frequency synchronization in a digital communication receiver after signal acquisition. The invention operates by performing multiple correlations of a received signal, each correlation performed over an symbol interval and correlating the received signal in the symbol interval with a sinusoid of an expected frequency. The correlations are combined to determine a peak and energy, and if the peak to energy ratio is above a threshold, the symbol timing and frequency offset is estimated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.