Frequency separation within the channel

Replies

• 

  Abhishek Rawal

  I assume, both frequencies are of different range & detectors in both end are capable of detecting only desired frequency.
  I am not sure about this though, but this seems like simple logic to differentiate signals transmitted in one medium.
  
  Eg : In air medium millions of signals are transmitted, Wifi of neighbour, FM signals of radio station, Communication signals of a person talking using mobile. Every detector detects only frequency which it is desired to detect. I guess this is how it works.
  
  However more detailed answer #-Link-Snipped-# can give, as I am not good in communication Engineering.
• 

  Harshad Italiya

  I heard that the channels we are using for a telephonic conversation itself is divided into 2 sub-channels (say forward channel and reverse channel).

  I too believe as #-Link-Snipped-# said these two channels must have different frequency and because of that there is no any disturbance in communication.
  Like we have multiple frequency in FM band.
• 

  Anand Tamariya

  Well, there are technologies like TDM (Time division multiplexing) where same frequency can be used for multiple channels.
• 

  Jeffrey Arulraj

  Even more efficient ones are there
  
  All above explanations hold good but If you are amazed by just two signals then consider Orthogonal Frequency Division Multiplexing to be more puzzling than the others
  
  FDMA and TDMA are the main reasons for this to happen here in any communication channel