System and method for determining a fine frequency offset of a received signal
US7602834B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Apr 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W24/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for determining a fine frequency offset of a composite code spread spectrum signal is disclosed. The method includes despreading at least one component of the composite spread spectrum signal to form a partially despread composite spread spectrum signal. A set of on-time samples are selected from the signal. The set of on-time samples are rotated by a predetermined frequency amount. The set of rotated samples are placed into a plurality of frequency bins, with each frequency bin representative of a different frequency estimate. An energy for the signal in each frequency bin is determined to find the bin having the greatest energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.