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Satellite link design

  1. Jun 16, 2010 #1
    1. The problem statement, all variables and given/known data

    Given:
    Bit rate = C = 9600 bits/second
    Channel Bandwidth = B = 10 MHz
    Find Tx for satellite side and ground side

    2. Relevant equations

    Shannon's equation: C = B*log {1+(S/N)} (log is to the base 2)

    3. The attempt at a solution

    Well this is how I decided to approach the problem
    Use Shannon's equation> calculate (S/N)> account for all the losses> calculate EIRP> calculate Tx
    But I seem to be going wrong in the beginning itself
    After computation, I calculated (S/N) to be -31.77 dB or -1.77 dBm (which is definitely wrong!)

    Could you please point out the mistake? Is it in my computation or my interpretation of the Shannon's equation? Or is my entire approach gravely wrong?
     
    Last edited: Jun 16, 2010
  2. jcsd
  3. Aug 15, 2012 #2
    Bit rate = C = 9600 bits/second
    Channel Bandwidth = B = 10 MHz

    IMHO the given bitrate is not correct. 9,6 kbps carrier can't take 10Mhz of bandwidth.
     
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