Author Topic: Explain Channelization in networks.  (Read 840 times)


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Explain Channelization in networks.
« on: May 11, 2014, 09:35:28 AM »
Explain Channelization in networks.


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Re: Explain Channelization in networks.
« Reply #1 on: May 04, 2015, 10:19:47 PM »


Channelization is a multiple-access method in which the available bandwidth of a link is shared in time, frequency, or through code, between different stations. In this section, we discuss three channelization protocols: FDMA, TDMA, and CDMA.

There are three main ways of doing this:

In time-division multiplexing (TDMA),2different sources transmit on the line at different times, each
taking (very short) turns. This is used in long-distance phone lines, for example.3
In frequency-division multiplexing (FDMA), the different sources attached to the line send on different
frequencies (e.g. different radio frequencies, or different light frequencies, i.e. different colors).
This is used for radio and television transmission, and increasingly for computer-to-computer network
In code-division multiplexing (CDMA), all nodes on the network send at the same time, on the same
frequency, but using different codes. (Think of one node using a 4B/5B code, another using a second
kind of code, and so on.) This is used in some cellular telephone systems