Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Patent
1985-04-10
1987-01-13
Ng, Jin F.
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
455 52, 455 49, 455 68, H04B 154, H04B 1700
Patent
active
046370641
ABSTRACT:
A global network equalization system for equalizing all modem receivers and modem transmitters connected to a local area network. A calibration signal is injected over the local area network from a reference or common point and received by each of the receivers. A parameter of the received signal (e.g. amplitude, power, or spectral density) is compared to a reference value and the gain of the receiver is adjusted in response thereto. When each of the receivers has been equalized, each transmitter and the associated receiver is tuned to a common vacant frequency. The transmitter transmits a signal that is then received by the associated receiver via the reference point. The received signal is compared to another reference value and the transmitter gain is adjusted in response thereto. In this way each transmitter and each receiver is equalized to the reference point of the local area network, and completely equalized communications can occur between any transmitter and receiver connected thereto.
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Roberts Richard D.
Walker William D.
DeAngelis, Jr. John L.
Harris Corporation
Huseman M.
Ng Jin F.
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