Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1977-06-03
1980-01-15
Konick, Bernard
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
179 16EA, 325 42, 364724, H04B 110, H04B 304
Patent
active
041841298
ABSTRACT:
A system for transmitting data between distant locations comprises a modem at each location and a communication channel, typically a telephone line, whose transfer function has a principal component whose variation is slow and a second component whose variation is faster, but whose action is lesser. A correction device is located in the modem at the output of the channel and comprises an equalization filter constructed to compensate for the principal component and a digital adaptive network having a few coefficients and a low time constant, compatible with the frequency of the second component. The coefficients of the digital network may be adapted independently of those of the equalization filter.
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Levy Michel
Macchi Cesar
Macchi nee Danjon Odile
Agence Nationale de Valorisation de la Recherche (ANVAR)
Konick Bernard
Myers Randall P.
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