•Multiplexing refers to the sharing
channel such as telephone channel by users contained to a local site.
•Multiple access refers to the remote
sharing of communication channel such as a satellite or radio channel by users
highly dispersed locations.
SDMA
•SDMA stand for space division multiple
access.
•If users the SDM concept given the access
to multiple users by having multi beer antenna directed towards different
geographic areas.
TDMA
•TDMA stand for time division multiple
access. TDMA uses TDM concept allowing the access to multiple users by dividing
the time in to time slots
FDMA
•FDMA stand for frequency division
multiple access. FDMA is type of FDM which is use to allow multiple users to
share a common channel by dividing the frequency spectrum.
CDMA
•CDMA stand for code division multiple
access.
•It is a technique for multiple users to
share common channel using CDM.
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