Hop overlay signal structure for including additional signaling channels in code division multiple access communication and navigation systems
US6741633B1 · kind B1 · utility
10Cited by
10References
23Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 11, 1999 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709709
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new signal format that allows sharing of spectrum with CDMA signals with a minimum amount of mutual interference and a maximum amount of processing gain. The method including the step of coherently frequency hopping a narrow band signal adapted to minimize interference with a main lobe of the CDMA code over the allocated bandwidth. A particular application of this provides a method for enabling a global positioning device adapted to receive an allocated bandwidth to directly acquire a to P(Y) code when an associated C/A signal is effectively jammed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.