Turbo decoding apparatus and decoding iteration count controlling method in turbo decoding
US6915474B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jul 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2975
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
With attention focused on the most significant bit (sign indicating positive or negative) of a soft decision value, the present invention provides a method of deciding whether iterations of soft decision decoding of turbo decoding should be terminated or not. A change of a positive/negative bit value included in a soft decision result for each bit of a received codeword is monitored. When the values of the positive/negative bits cease to fluctuate and such a tendency is observed for almost all bits of the received codeword, it is decided that the positive/negative bits have converged. Termination of iterations of soft decision decoding is determined based on the decision result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.