Method and apparatus for communication channel identification and signal restoration
US5047859A · kind A · utility
19Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Oct 9, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/211
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A test signal is transmitted over a communication channel and the signal is received by a receiver. The temporal evolution of the test signal is represented in a matrix and the inverse of the test signal evolution matrix is stored in the receiver. Samples of the received signal and the test signal evolution matrix inverse are used to compute the channel impulse response, and the values of the channel impulse response set signal restoration filter coefficient values. The received signal is then restored by filtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.