What is the difference between TDMA,FDMA and CDMA?

whate the differents between TDMA,FDMA,CDMA,and the best books talk in this subject.


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DMA stands for "Division Multiple Access"
T: Time
F: Frequency
C: Code

Those techniques are used to allow "Multiple" users to "Access", and communicate over the same channel

TDMA:
Time sharing.
Time is divided to slots, each user is assigned a slot or more each user 'transmit or receive' in his/her own slot of time only, so the user can access the channel only in his/her time slot, and another user will access the channel next, so on.

FDMA:
Instead of time, the channel bandwidth is divided into sub-bands; each user is assigned a sub-band to use.
So all users work at the same time but each in his own band.

CDMA:
Here all users work in the time and frequency band
But each one is assigned a different code,
It is like if there are some people each one is speaking a completely different language (e.g. English, Arabic, and Korean), if you can understand English only, you will only recognize the English speech, even in the presence of the other speakers at the same volume level.

Here is a book you can start with
"Communication Systems", 4th Edition, By "Simon Haykin"
It's a good book as introduction to communication systems and techniques.