Circuit and method for symbol timing recovery in phase modulation systems
US6873666B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Apr 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0334
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a circuit and method for symbol timing recovery in phase modulation systems. First, phase differences of in-phase signals and quadrature signals in a polar coordinate are generated at the same sampling points of neighboring symbols. Second, an operator is generated by taking a square of a value subtracting the phase difference from a default phase value. Third, the sums of phase differences of every sampling point in a symbol are computed to determine an optimal sampling point in a symbol period and correctly recover symbol timing of signal sequences. By the above properties, the present invention has a simple structure and can shorten an execution time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.