Mutiple Access

A limited amount of bandwidth is allocated in wireless services. A wireless system is required to accommodate as many user as possible by effectively sharing the limited bandwidth. Therefore in the field of communications, multiple access could be defined as means of allowing multiple user. To share the finite bandwidth simultaneously.

There are 4 basis schemes for this
1] Frequency Division Multiple Access (FDMA)
2] Time Division Multiple Access (TDMA)
3] Code Division Multiple Access (CDMA)
4] Space Division Multiple Access (SDMA)