Frequency discrimination in a spread spectrum signal processing system
US6178197A · kind A · utility
63Cited by
53References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/71563
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The actual carrier frequency of a spread spectrum signal is found by tuning a pair of correlators to a pair of search frequencies and then correlating the spread spectrum signal against one or more reference signals to produce a pair of correlation magnitude values. The ratio of the difference between the correlation magnitude values to the sum of the correlation magnitude values determines the offset between the actual carrier frequency and an estimated carrier frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.