Module 5: Multiplexing Flashcards
What is multiplexing?
a method by which multiple analog or digital signals are combined into one signal over a shared medium.
When did multiplexing originate from?
1870s
is credited with the development of telephone carrier multiplexing in 1910.
George Owen Squier
A device that performs the multiplexing is called
Multiplexer
a device that performs the reverse process is called
demultiplexer (DEMUX or DMX).
opposite aim as multiplexing
Inverse multiplexing (IMUX)
What is I/O multiplexing?
opposite aim as multiplexing
Frequency-division multiplexing (FDM) is inherently
an analog technology
In FDM the signals are
electrical signals
Time-division multiplexing (TDM) is a digital (or in rare cases, analog) technology which uses
time
who developed a time-multiplexing system of multiple Hughes machines in the 1870s.
Émile Baudot
can be applied when the bandwidth of a link (in hertz) is greater than the combined bandwidths of the signals to be transmitted.
FDM
In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
greater than
In ________ TDM, each input connection has an allotment in the output even if it is not sending data.
synchronous
In ________ TDM, slots are dynamically allocated to improve bandwidth efficiency.
statistical(asynchronous)
