Phase tracking method and device thereof
US7639750B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jan 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03414
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A phase tracking device. A sampler samples the received signal according to a sampling frequency correction signal to generate a first signal. A phase de-rotator adjusts the phase of the first signal according to a carrier frequency correction signal to generate a second signal. A fast Fourier transformer performs a fast Fourier transformation on the second signal according to a symbol edge to generate a third signal. An equalizer equalizes the third signal according to the estimated channel to generate an output signal. A selector selects the output signal which meets the predetermined condition. A phase error metric processor generates the correction signals for both sampling clock frequency offset and carrier frequency offset according to the selected sub-carrier indexes and their corresponding phase error metrics and channel estimates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.