Dynamic DC offset removal apparatus and dynamic DC offset removal method
US7675997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Nov 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/061
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dynamic DC offset removal apparatus and a dynamic DC offset removal method capable of accurately estimating a change position of a dynamic DC offset and a DC offset value before the change and a DC offset value after the change, thereby carrying out equalization processing on a reception signal whose dynamic DC offsets are removed, and improving a bit error rate characteristic. In receiver 100 having a dynamic DC offset removal apparatus, dynamic DC offset detection section 109 calculates a DC offset value before the change and a DC offset value after the change, and DC offset change timing from the maximum value and minimum value calculated at maximum value search section 104 and minimum value search section 105 and the first-half mean value, second-half mean value and overall mean value calculated at first-half mean value calculation section 107, second-half mean value calculation section 108 and overall mean value calculation section 106, and compensation DC offset switching section 111 of DC offset removal section 110 switches between the DC offset value before the change and DC offset value after the change based on the DC offset change timing and removes dynamic DC offsets …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.