Methods of, and apparatus for, producing code words
US7379610B2 · kind B2 · utility
0Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2001 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Dec 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/136
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Datawords encoded using a first-order Reed-Muller code are decoded using a Fast Hadamard Transform (FHT). Where the dataword is known to comprise a number of unused bits at one end, the soft decisions of the codeword are reordered. Majority polling is then performed on groups of the soft decisions to produce a series of soft decisions which make up a new codeword. The new codeword is then decoded using an FHT of lower order than the FHT applicable to the originally received codeword.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.