KNL2373 Computer System Operations

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Learning Outcome(s)

Differentiate TDMA, FDMA and CDMA

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Multiplexing : Carrying multiple messages over a channel simultaneously

TDM (time division multiplexing)

Example: packet switching on the Internet

Use: digital channels

FDM (frequency division multiplexing)

Example: Cable TV

Use: Analog channels

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Time Division Multiplexing

Time division multiplexing (TDM) is a communications process that transmits two or more streaming digital signals over a common channel. In TDM, incoming signals are divided into equal fixed-length time slots. After multiplexing, these signals are transmitted over a shared medium and reassembled into their original format after de-multiplexing. Time slot selection is directly proportional to overall system efficiency.