Pulse or digital communications – Repeaters – Testing
Patent
1984-12-28
1986-12-23
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 14, 375 99, 371 43, H04B 110
Patent
active
046317350
ABSTRACT:
A receiver for use in deciding which signal points were sent from a transmitter based on corresponding noise affected signals received over a channel, the transmitter including an encoder which encodes a stream of information symbols into the signal points, the noise affected signals carrying information about a particular sequence of possible states occupied in a succession of time intervals by a finite state process. The receiver includes feedback circuitry for generating a plurality of different modified versions of each received signal, and a decoder for deciding which signal points were sent, given the received signals, based on estimating the particular sequence of states, and using at least two different modified versions.
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Chin Stephen
Codex Corporation
Griffin Robert L.
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