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Different multiple access technologies.
The document summarizes different multiple access technologies used in telecommunications including FDMA, TDMA, CDMA, SDMA, and CSMA. FDMA divides the available bandwidth into frequency bands. TDMA divides each channel into time slots. CDMA allows all transmissions to occur simultaneously through coding. SDMA serves users using spatial separation techniques like antenna beams. CSMA involves checking if the channel is free before transmitting.
