May 2024
Intermediate to advanced
309 pages
13h 33m
English
Content preview from Data Communications and Computer Networks by Pearson
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Multiplexing and Switching 85
Though FDM is an analog multiplexing technique, it can also be used to multiplex the digital signals.
However, before multiplexing, the digital signals must be converted to analog signals. Some common
applications of FDM include radio broadcasting and TV networks.
Wavelength-Division Multiplexing
WDM is an analog multiplexing technique designed to utilize the high data rate capability of fibre-optic
cables. A fibre-optic cable has a much higher data rate than coaxial and twisted-pair cables and using
it as a single link wastes a lot of precious bandwidth. Using WDM, we can merge many signals into
a single one
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