Method for reallocating data in a discrete multi-tone communication system
US6122247A · kind A · utility
60Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0007
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the present invention, an ADSL system (10) determines if a bit swap is to occur based upon a projected margin of a best carrier and a current margin of a worst carrier. If a proposed swap is not beneficial (320, 512, 604, 612) no swap occurs. In addition, the present invention determines the effects of a bit swap on an error correction scheme (510, 611). If the swap effects the scheme, adjustments to system parameters are made to assure continued error correction. In addition, the present invention allows for bit swapping to and from bins containing zero or two bits respectively (331, 332, 403).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.