Question

what is SDM and FDM in computer and communication?
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Answer 1

Answer:

SDM – Space-Division Multiplexing works with analog signals and each transmitted channel has an individual point-to-point electrical conductor. FDM – Frequency-Division Multiplexing works with analog signals and several electric signals with various frequency ranges are transmitted over a single medium.

Explanation:

Answer 2

Explanation:

SDM (Space Division Multiplexing) or Spatial Multiplexing : In this technique, we split a communication channel(physical resource) into multiple different physical locations and allocate each stream of data onto each of the location. In real implementation, 'differet physical location' mean 'different transmission or reciever antenna'. MIMO (Multiple Input Multiple Output) is the most common example of SDM.

 

FDM (Frequency Division Multiplexing) : In this technique, we split a communication channel(physical resource) into different frequency blocks and transmit/receive different stream of data through different frequency blocks. OFDM (Orthogonal Frequency Division Multiplexing) is one typical example.