Apparatus and method for controlling forward error correction encoding in a very small aperture terminal
US5511079A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1993 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | May 26, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0009
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for controlling forward error correction of a VSAT earth station is disclosed. A hub earth station communicating with the VSAT earth station transmits digital data representing a propagation condition measured at the hub earth station. The VSAT earth station computes an estimated inroute fade from the transmitted information, as well as from the VSAT demodulator's estimate of propagation condition. When the total inroute fade is below a selected margin, a higher FEC encoding rate is selected for the VSAT transmitter in which to transmit its data packets to the hub earth station. As the estimated inroute fade exceeds a high FEC rain margin, a lower rate of FEC encoding is employed at the VSAT earth station. By permitting a higher FEC encoding rate, digital throughput is increased between the VSAT earth station and the hub station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.