Pulse or digital communications – Repeaters – Testing
Patent
1990-01-29
1991-07-30
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 18, 375101, H04L 2549
Patent
active
050365240
ABSTRACT:
In a system for transmitting a binary source signal from a data transmitter to a data receiver through a noisy dispersive channel, the data transmitter includes a sliding block encoder which converts the binary source signal at a given symbol rate 1/T into an encoded binary data signal at a symbol rate P/(NT), where P and N are positive integers such that N/P.ltoreq..sup.2 log(3)/2= 0.79248. Since the channel introduces intersymbol interference and noise into the encoded data signal, the data receiver is formed from the cascade of an equalizer, a sampler and a reconstruction circuit which serves to reconstruct the binary source signal at the symbol rate 1/T. The reconstruction circuit includes a detector in a cascade with a decoder having memory the equalizer, sampler and detector are arranged for the detection of a ternary data signal at the symbol rate P/(2NT).
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Bergmans Johannes W. M.
Doi Nobukazu
Izumita Morishi
Mita Seiichi
Hitachi , Ltd.
N.V. Philips Gloeilampenfabrieken
Safourek Benedict V.
Slobod Jack D.
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