Subrate preamble decoder for a high speed modem
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United States of America Patent
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-
Jan 3, 1989
Issued Date -
N/A
app pub date -
Jun 30, 1987
filing date -
Dec 11, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a communication system, a plurality of remote modems send streams of data to a local modem, each remote modem preceding its transmission with a unique preamble consisting of phase reversed signals. At the local modem a preamble decoder detects the phase reversals of received signals without requiring channel equalization and the local modem uses this information for system setup.
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