Noises in Wireless Channel

Replies

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  durga ch

  Vila

  Hiii all,
  
  In a wireless channel, can AWGN, Pulse Jammer, Single Tone Jammer, rayleigh fading and rician fading present all at once at the same channel? Or there is no such combination and they will be present in diferent different wireless channels?
  
  Thank you..

  Hi Vila,
  
  Good to see nice simple questions 😀
  
  raylegih fading channels:
  rayleigh fading comes into picture when you have the same signal travelling in multiple paths.ie consider a signal transmitted from Tx reaches Rx(reciever) through a direct path and another path wihc night be due to sheer reflection of the signals due to buildings and geographical obstrucles in such cases Rayleigh fading occurs .
  For eg: consider a block of impluses B1 tx at t=t and recieved at r=t1 now at t1 at Tx B2 is already transmitted and recieved at rx at t2. the previously sent block B1 is also recieved due to delay due to obstrucles hence at t2 at reciever the signals 9trecieved are (B1+B2)H(t) where H(t) is the channel response .this would be cumilative
  
  
  Gaussian noise is generally due to thermal noise introduced by electronic components and amplifiers at reciever. Hence i can think that what ever channel type it might be Gaussian nosie or WGN is created. or you can say added so AWGN
  
  Ricean Distirbution:
  this relates to multipath fading as well. Here the obstrucles might be moving so at particular instance of the medium say air you might find only static obstructors and at some point the signal might as well be distorted due to moving objects
  then its ricean
  
  So i can conlcude that near for a given signal there might be AWGN at reciever end,and in the channel you might find rayleigh or ricean
  
  Are Pulse Jammer, Single Tone Jammer channel type? I am not sure
• 

  durga ch

  Re: it seemed as nothing
  
  @yuio828o
  KNOW WHAT??
  STOP SPAMMING 😡
• 

  Vila

  Hiii Durga,
  
  Thanks a lot for the explanation...Pulse Jammer and Single Tone jammers are type of jammers which will be sometimes present in wireless channel.