Multicarrier systems
US7286466B2 · kind B2 · utility
4Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Dec 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0234
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an OFDM receiver the complex values of predetermined pilot sub-carriers are compared with expected values to determine pilot distortion values for those sub-carriers. The phases of the differences between successive values are determined, and then the rate at which these phases change with respect to sub-carrier frequency is determined. Data distortion estimates for other sub-carriers can be calculated by interpolation of the pilot distortion values such that the data distortion estimates have a phase which substantially complies with the determined rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.