Method and intelligent digital beam forming system for interference mitigation
US5754138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An intelligent digital beam former (10) in conjunction with a satellite based array antenna (20) provides a plurality of dynamically controllable antenna beams (52) for communication with subscriber units (90) on earth's surface. Interference is mitigated placing a null in the transmit and receive antenna patterns at the location of the interfering signal by adjusting digital beam forming coefficients. As the interfering signal moves relative to the satellite, the interfering signal is tracked to maintain interference mitigation. The digital beam forming coefficients are also dynamically adjusted to help maximize signal quality of communications with subscriber units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.