Message-wise unequal error protection
US8539301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2010 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Dec 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1105
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Message-wise unequal error protection is provided using codeword flipping to separate special and ordinary codewords without discarding any codewords. Special messages are encoded to ensure the codeword weight is less than a certain threshold weight. Ordinary messages are encoded to ensure the codeword weight is greater than the threshold weight. The bits of the codeword are flipped to enforce the weight criterion. Ordinary and special messages are encoded using different encodings to provide different levels of error protection. Upon receipt, codewords are separated into special and ordinary codewords for appropriate decoding. If a codeword is of indeterminate type, it is iteratively processed as both a special codeword and an ordinary codeword. The decoding result of each process is periodically checked to determine which decoding result satisfies decoding criteria.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.