System for canceling internal interference in a receiver
US6697613B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1036
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for reducing internal interference in a radio-frequency (RF) receiver includes providing a plurality of time slots within a frame where the receiver is configured to receive external RF signals during a receive time slot within the frame. Data is collected during a receive time slot of a frame, and a receive data value is calculated corresponding to the collected data. A predetermined portion of the data collected is inspected, and a bias data value is calculated. The bias value is attributable to interference signals caused by the internal interference. The bias data value is added to an accumulator, and over time, a running average of the bias data values is determined. A portion of the running average is subtracted from the sample stream of data to provide output data corresponding to the external RF signals absent the internal interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.