Synchronization techniques and systems for radiocommunication
US6134286A · kind A · utility
46Cited by
10References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/042
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for synchronizing and demodulating radio wave signals transmitted in frame format with an unique word, involving correcting the frequency offset of the received signal and differentially correlating the frequency corrected signal with the unique word, A first timing estimate is further refined by a 2-D search between frequency and time and a first frequency estimate is further refined by quadratic interpolation. The finely synchronized signal is demodulated using a Viterbi-based demodulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.