QPSK Data rate Question

Discussion in 'The Projects Forum' started by rawanayyoub, Jan 18, 2013.

  1. rawanayyoub

    Thread Starter New Member

    Oct 9, 2012
    8
    0
    Hi all,
    Please I need to ask what's the data rate of QPSK signal ??? its bit rate or the symbol rate , in my system I use 20k Hz as frequency of bit in each branch I and Q branches , then if I faced Question about the Data Rate of my system which the answer 20K Hz or 40K Hz , and this values related to symbol rate or bit rate ?????? Please I need help at this situation so badly.

    Thanks in advance,
    Rawan Ayyoub
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    It is quad phase shift keying, meaning you have 4 possible symbols coding 2 bits. So I would say data rate is the same thing as bit rate, and is two times the symbol rate.

    And please for next time, one question mark is the perfect amount when asking a question.
     
  3. rawanayyoub

    Thread Starter New Member

    Oct 9, 2012
    8
    0
    Thanks for your reply , Please according to my Question what are the values for Data rate or bit rate and symbol rate? , and this for more clearly info :)

    with my deepest thanks,
    Rawan Ayyoub
     
  4. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    What do YOU think it is? It seems like a typical homework question, so if I give you the answers right away you won't learn anything.
     
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