Method for data transmission on transmission channels in a digital transmission system
US6272183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0059
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a method for data transmission on transmission channels in a digital transmission system, turbo coding is carried out in a turbo coder at a transmitter end for channel coding, and turbo decoding with soft-decision output signals is carried out in a turbo decoder at the receiver end. In order to improve the quality of service, the quality of service is determined from the variances of the soft-output signals at the turbo decoder, and the coding rate is set by adaptation of the puncturing such that a predetermined quality of service is obtained. Alternatively, the number of decoding iterations is set as a function of the quality of service. If a MAP symbol assessor is used at the receiver end, the variances .sigma..sup.2.sub.LLR of the soft-decision output signals from the turbo decoder are determined, and the bit error rate is calculated from the variances .sigma..sup.2.sub.LLR as a measure of the quality of service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.