Method and apparatus for puncturing code symbols in a communications system
US6690734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2000 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Oct 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for puncturing symbols in a communications system. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as Dmin=└S/P┘, where └ ┘ denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.