Analog active cancellation of a wireless coupled transmit signal
US6539204B1 · kind B1 · utility
170Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Aug 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/15585
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An active cancellation device receives a model of a first signal from a local wireless transmitter. The first signal causes a coupled signal that interferes in a second signal received by a local wireless receiver from a remote wireless transmitter. The active cancellation device generates a cancellation signal based on the model of the first signal, and provides the cancellation signal to the local wireless receiver. At the local wireless receiver, the cancellation signal combines with the coupled signal and the second signal. The cancellation signal reduces the interference in the second signal caused by the coupled signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.