Difference between multiplexing and access

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Multiple access refers to techniques that allow multiple users to share the same communication medium, while multiplexing involves combining multiple signals into one signal for transmission over a single channel. Frequency Division Multiple Access (FDMA) uses different frequencies for independent carriers, whereas Time Division Multiple Access (TDMA) encodes time slots on the same carrier, making the terms more interchangeable in this context. The distinction lies in the method of sharing resources: multiple access focuses on user access to a medium, while multiplexing emphasizes signal combination. Understanding these differences is crucial for effective communication system design.
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what is the meaning of multiple access?how it is different from multiplexing?
thanks
 
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Can you please explain in what context the terms are used. For instance FDMA means Frequency Division Multiple Access and refers to the typical system of multiple carriers operating independently on different frequencies. When I hear the word multiplexing I usually think of independent information encoded on the same carrier.

However with the term TDMA, Time Division Multiple Access, the difference is not so clear. In fact with TDMA the two terms are really synonymous because all the time slots are encoded on the same carrier.
 

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