Automatic frequency control of satellite transmitted spread spectrum signals
US5036523A · kind A · utility
30Cited by
4References
59Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1989 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Oct 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Automatic frequency control is provided in a satellite-based spread spectrum radio communication system by employing a pilot signal as a frequency reference. A transmitter inserts the pilot signal at a null point in the power versus frequency spectrum of the transmitted spread spectrum signal in order to minimize bandwidth requirements and to avoid interference between the pilot signal and the transmitted data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.