Receiver, sender, method and burst signal
US7403546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2002 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Oct 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/041
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Known burst signals exchanged between senders and receivers comprise either one syncronisation block followed by a data block or several equidistant synchronisation blocks separated by data blocks, with a synchronisation block including predefined synchronisation symbols and with a data block including data symbols. By adapting senders and receivers in such a way that said synchronisation blocks are located non-equidistantly, preferably with a centre of gravity of synchronisation symbols mainly corresponding with a centre of the burst signal, an improved synchronisation can be reached. Thereto, senders and receivers comprise locators for locating the non-equidistant synchronisation blocks, with the receivers preferably further comprising determinators for determining phases of synchronisation blocks, and synchronisers for synchronising detectors/demodulators in dependence of neighbouring as well as non-neighbouring non-equidistant synchronisation blocks, and processor systems for calculating frequencies in dependence of locations and/or phases. The processor systems preferably comprise estimators for estimating main frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.