Effective error control scheme for satellite communications
US4344171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | Dec 11, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1806
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A hybrid scheme for controlling transmission errors in digital data communication systems. Normally, data blocks with a small number of parity digits for error detection are transmitted. When the presence of errors is detected, the retransmissions are not the original data blocks but some properly selected blocks for correcting errors in those erroneously received data blocks which are stored in a buffer at the receiver. The retransmitted blocks are formed based on the original data blocks and error-correcting codes with an invertible property. When such blocks are received, they are used to recover the original data blocks either by an inversion operation or by a decoding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.