Short-periodicity carrier acquisition for SATCOM interference cancellation
US8335468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2010 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18513
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A technique for interference cancellation in a satellite communication system involves an autocorrelation on the hub signal to detect a periodicity in the hub signal, determining a search range for a delay in the hub echo signal in accordance with the periodicity, locating the delay in the hub echo signal, and performing the interference cancellation in accordance with the delay. In the case of periodicity, a delay is acquired (either true or false) that provides cancellation (provided that the period does not change). When the period changes, cancellation is discovered to be poor, and another delay (that may be true or false) is acquired that provides good cancellation and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.