Trellis coding method using a multilevel delay device
US5570391A · kind A · utility
15Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/186
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This invention is a multilevel trellis coding method which employs a single binary convolutional code and is called a single-stage and multilevel trellis coding. This invention can be generalized by combining several single-stage multilevel codings together to form a multilevel trellis coding for which the number of stages is less than the number of coding levels. New trellis coded modulation systems and binary trellis coding systems which are designed by the aforementioned trellis coding method are better than the currently known coding systems if the communication channels are additive white Gaussian noise (AWGN) channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.