QANI Trellis-coded signal structure
US4660214A · kind A · utility
30Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 1, 1985 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3411
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signal structure for high speed Trellis coded data communications selects each signal point in the structure to attain a low probability of error in the presence of both additive noise and multiplicative noise. Viterbi decoding is modified to take account of the multiplicative noise energy content of the received signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.