Applying code division multiplexing to a beacon channel containing data for decoding a corresponding traffic channel
US9130689B1 · kind B1 · utility
2Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Nov 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is generally directed to using code division multiplexing (CDM) on the beacon and traffic channels while lowering the power of the beacon channel so that it rides under the traffic channel and becomes very difficult to detect. In this way, the beacon channel can contain sensitive information for decoding the traffic channel while remaining hidden from unintended recipients. By hiding the beacon channel, the CDM technique can be particularly beneficial in adaptive waveform systems where sensitive traffic channel acquisition information is regularly transmitted to the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.