Ensemble modem structure for imperfect transmission media
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United States of America Patent
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-
May 23, 1989
Issued Date -
N/A
app pub date -
Jan 5, 1988
filing date -
May 20, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high-speed modem that transmits and receives digital data on an ensemble of carrier frequencies spanning the usable band of a dial-up telephone line. The modem includes a system for variably allocating data and power among the carriers to compensate for equivalent noise and to maximize the data rate. Additionally, systems for eliminating the need for an equalization network, for adaptively allocating control of a channel, and the tracking variations in line parameters are disclosed.
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