Question
Download Solution PDFFDM and analog multiplexing technique used to combine
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Multiplexing is the process of combining multiple signals into one signal, over a shared medium.
Types of Multiplexing include:
Analog Multiplexing: The signals used in analog multiplexing techniques are analog in nature. The analog signals are multiplexed according to their frequency (FDM) or wavelength (WDM). Hence option (1) is the correct answer.
Frequency Division Multiplexing:
- In analog multiplexing, the most used technique is Frequency Division Multiplexing (FDM).
- This technique uses various frequencies to combine streams of data, for sending them on a communication medium, as a single signal.
- Example: A traditional television transmitter, which sends a number of channels through a single cable uses FDM.
Digital Multiplexing: The term digital represents discrete bits of information. Hence, the available data is in the form of frames or packets, which are discrete.
Time Division Multiplexing:
- In Time Division Multiplexing (TDM), the time frame is divided into slots.
- This technique is used to transmit a signal over a single communication channel, by allotting one slot for each message.
- Time Division Multiplexing (TDM) can be classified into Synchronous TDM and Asynchronous TDM.
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