Data re-transferring method based on bit transformation
US8295398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jan 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3405
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a data re-transferring method based on bit transformation in a communication system which adopts a high order modulation and supports a re-transferring mechanism. The method includes the processes of: exchanging the location of each bit modulated to a symbol in a constellation figure used in Quadrature Amplitude Modulation (QAM) according to a selected transformation mode; mapping re-transferred data to each bit modulated to a symbol in a constellation figure of which the location has been exchanged; performing the QAM of the re-transferred data. With the method, storage amount can be decreased, balance of reliability of bits within the same data symbol after multiple re-transferring processes can be ensured, in addition, performance of the decoder and reliability of data transmission can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.