Method and system for soft decision propagation
US6343210B1 · kind B1 · utility
13Cited by
20References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1999 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0097
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for soft decision propagation trades off system bandwidth in return for link margin. When signal quality on an uplink is low, a satellite (20) sends soft decision data, rather than hard decision data, to a gateway (40). When path diversity exists on the uplinks, and multiple satellites (20) receive the uplink, multiple versions of soft decision data are sent to the gateway (40). The gateway combines the soft decision data resulting from multiple uplink paths, thereby increasing the effective uplink signal to noise ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.