Receiver second order intermodulation correction system and method
US8032102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2008 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Jul 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/109
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for correcting a second order intermodulation product in a direct conversion receiver is provided. The system includes a cross-covariance system receiving a data signal and a second order intermodulation estimate signal and generating a cross-covariance value. An auto-covariance system receives the second order intermodulation estimate signal and generates an auto covariance value. A buffer system stores a second order intermodulation product correction factor. A divider receives the cross-covariance value, the auto-covariance value and the second order intermodulation product correction factor and generates a running average second order intermodulation product correction factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.