Soft decision Reed-Solomon decoder
US4821268A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Oct 26, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1585
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a Reed-Solomon Decoder, each byte of a received codeword is matched to the closest resembling one of a set of allowed symbols and assigned a certain reliability, reflecting the degree of resemblance. The symbols thus matched are arranged in descending order to reliability to form a virtual codeword, the first K symbols being virtual message bytes and the remaining r symbols being virtual check bytes. The virtual codeword is then decoded using an algorithm which produces a series of iterative approximations to the transmitted codeword. The approximation most closely resembling the received codeword is selected as the corrected codeword.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.