The Advantages of TDMA

TDMA is a common communication scheme.
Some of the advantages of TDMA are:
It is a simple and intuitive concept. This may be the reason it is so common today (since it was in use before CDMA existed). It also does allow for high bit rate bursts since each user has complete control of the channel for short periods, which is very nice for many applications.
A point worth noting here is that this system works because each user's transmission is orthogonal to all of the others'. This is due to the fact that all transmissions are disjoint in time.