Timing reproducer and demodulator comprising this
US6650718B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Aug 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A timing recovery device and demodulator. An adding device adds together an in-phase component and a quadrature component of a base band signal. A subtracting device subtracts the in-phase component and the quadrature component of the base band signal from each other. Then, the correlation between the added signal and a ½ symbol frequency component generated at the receiver side and the correlation between the subtracted value and the ½ symbol frequency component are calculated. A vector selector compares the added value correlation signal and the subtracted value correlation signal, and selects the larger one of the correlation signals. A timing phase difference calculator then calculates a timing phase difference, using the vector angle indicated by the selected correlation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.