Method of and apparatus for determining time origin of timer for

Details Method of and apparatus for determining time origin of timer for Method of and apparatus for determining time origin of timer for

1985-04-24

1987-05-12

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

375 10, 375 98, 370 76, 370101, H04J 114

Patent

active

046655344

ABSTRACT:
A method of and apparatus for determining a time origin of a timer for a modem which is adapted for training in a parallel channel transmission system. A transmitter during a first period of time in a training procedure transmits a channel signal to a receiver except for a signal in at least one channel, while the receiver during the first period of time activates an AGC to receive the channel signal, whereafter the transmitter during a second period of time transmits the channel signal without excluding any channel and the receiver sees presence/absence of received signal power in a specific channel in which the received signal power in the first and second periods has been adjusted to a predetermined value.

REFERENCES:
patent: 4052567 (1977-10-01), MacKay
patent: 4199663 (1980-04-01), Herzog
patent: 4310922 (1982-01-01), Lichtenberger et al.

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