Technique for supplying reference for an adaptive equalizer when multiple phase signals are transmitted
US4151491A · kind A · utility
3Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/01
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The adverse effects of node slips on the operation of an adaptive equalizer are corrected by determining phase and amplitude errors in the received vector signal relative to phase and amplitude estimates, based on node decisions. The phase and amplitude error signals are aligned in a prescribed fashion with the tip of the received signal vector and, from this alignment, respective X and Y components of the error signals are obtained and fed back to the equalizer as projected X and projected Y errors for updating the equalizer weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.