1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Communication system problem

  1. Oct 12, 2016 #1
    • Member advised to retain and use all sections of the formatting template.
    1. The problem statement, all variables and given/known data
    Hi everyone. I was trying to solve an exercise from the book Leon couch, communication systems, number 3.7 of the 6th edition. This is the statement:
    In a PCM binary system, the quantisation noise mustn t exceed the percentage value P of the peak power. Show that the required number of bit for each word is:

    N> log2(10)*log(50/P).

    I tried to solve it by applying this reasoning :
    The s/n ratio is equal to 3M^2 for a PCM system. Then
    If N<(p/100)*s, then s/n>(100/p). Then I solve it by passing to decibel, and making the logaritm, but I obtain something quite different, and I don t undestand where I was wrong.
     
  2. jcsd
  3. Oct 12, 2016 #2
    Anyone??
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted