Reliable symbols as a means of improving the performance of information transmission systems
US7143013B2 · kind B2 · utility
3Cited by
56References
57Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 18, 2001 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jul 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/067
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
All practical communication channels impose some type of corruption on received data through inter-symbol interference (ISI). ISI corruption is particularly acute in high-order constellation transmission. Although ISI effects of high-order constellation transmission are very large on average, some symbols may be received that suffer relatively low levels of ISI. These symbols are “reliable symbols” and can be used to provide blind estimation of the ISI coefficients. Once the ISI effects of a channel are known, all captured signals may be corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.