Method and system for radio frequency (RF) group delay compensation in a broadcast system
US7907909B2 · kind B2 · utility
1Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio device operable to compensate for a large RF filter group delay variation is provided. The radio device includes a receiving unit operable to receive an OFDM signal that comprises pilot subcarrier signals and data subcarrier signals. The radio device further includes a group delay (GD) compensator, operable in frequency domain, and configured to perform phase rotation to correct a group delay individually on tones of an OFDM symbol. The phase rotation is calculated as a function of the phase shifts of the received pilot subcarrier signals and subcarrier index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.