Method and apparatus for signal receiving synchronization
US6618458B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A synchronization method for received sign and its apparatus capable of increasing accuracy of detection of a receiving signal, of estimating a frequency and of improving reliability in the synchronization of received signal are provided. A signal intensity detecting section is used to detect some peak values and timing values of signals obtained in a first frame and to store them into a memory. A signal extracting section is used to estimate timing, in a second frame, by obtaining a largest synthesized peak value in both frames from the peak value and timing value supplied by a timing estimating section. In a frame following the second frame, frequency data estimated based on a frequency estimating signal with an estimated timing and frequency data estimated based on a frequency estimating signal corresponding to the estimated timing in the frame following the second frame are synthesized and an estimated frequency error is obtained from the synthesized frequency data. The correlation between a synchronization word with its frequency corrected based on an estimated frequency error by a signal extracting and frequency correcting section and a known synchronization word is examined …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.