MULTIPLEX COMMUNICATION

Introduced: September 1968

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: MULTIPLEX COMMUNICATION

Description

H04J covers multiplex communication systems and techniques that enable simultaneous transmission of multiple signals or information streams over a single communication channel or medium. This includes time-division multiplexing (TDM), frequency-division multiplexing (FDM), code-division multiplexing (CDM), and wavelength-division multiplexing (WDM), along with associated synchronization, signaling, and channel allocation methods. The classification encompasses technologies for telecommunications networks, data transmission systems, and integrated communication infrastructures where efficient bandwidth utilization through signal combining is essential. Related switching, routing, and network management aspects specific to multiplex systems are also included, distinguishing this from broader electrical communication techniques covered in H04.

Scope Notes

Limiting references: Optical monitoring arrangements, independent of the multiplexing method Selecting arrangements for multiplex systems | Application references: Use of multiplexing in transmission systems for measured values, control or similar signals Arrangements for transmission of digital information affording multiple use of the transmission path Systems for the simultaneous or sequential transmission of more than one television signal

Related Keywords

reducing CROSS(ES) talk in multiplex systemselectric DISTRIBUTORS in multiplex systemsMONITORING of multiplex telecommunication systemsMULTIPLEXING of communication systemsSYNCHRONISATION in multiplex systemsmultiplex systems for TELECOMMUNICATION

9 direct subcodes

Child Classifications

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H04J 1/00 Frequency-division multiplex systems
H04J 11/00 Orthogonal multiplex systems
H04J 13/00 Code division multiplex systems
H04J 14/00 Optical multiplex systems
H04J 3/00 Time-division multiplex systems
H04J 4/00 Combined time-division and frequency-division multiplex systems
H04J 7/00 Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
H04J 9/00 Multiplex systems in which each channel is represented by a different type of modulation of the carrier
H04J 99/00 Subject matter not provided for in other groups of this subclass