Signal demodulation method and apparatus and signal modulation method and apparatus in return link of satellite system
US8699628B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2011 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Jul 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technology for modulating and demodulating a burst signal in a return link of a satellite system, in which the burst signal is modulated and transmitted from a transmission end of the return link and a symbol of the burst signal is identified and demodulated at a receiving end. The method includes estimating symbol timing of a burst received through the return link and synchronizing the estimated symbol timing of the burst to reference symbol timing; synchronizing a location of the timing-synchronized burst having the symbol timing synchronized to a location of a reference burst using a preamble symbol and a post-amble symbol of the timing-synchronized burst; and recovering a carrier of the location-synchronized burst whose location has been synchronized to the location of the reference burst using a pilot symbol of the location-synchronized burst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.