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Re: simulation results from octave wrong!!!


From: Steve Thompson
Subject: Re: simulation results from octave wrong!!!
Date: Thu, 2 Aug 2007 12:22:20 -0700

On 8/2/07, Dmitri A. Sergatskov <address@hidden> wrote:
> The results actually not that different. As you  can see, the
> sum of Octave's output and Matlab's output (for BER parameter)
> is 1.

That is a great observation!  I was blind to it.

  octave_ber = [0.808694;
                0.902395;
                0.957872;
                0.986852;
                0.996711;
                0.999372;
                0.998905;
                0.999678;
                0.999145];

  matlab_ber = [0.203326;
                0.100329;
                0.037475;
                0.011161;
                0.003115;
                0.001631;
                0.000990;
                0.000976;
                0.000889];

  octave:3> [1-octave_ber, matlab_ber]
  ans =

    1.9131e-01   2.0333e-01
    9.7605e-02   1.0033e-01
    4.2128e-02   3.7475e-02
    1.3148e-02   1.1161e-02
    3.2890e-03   3.1150e-03
    6.2800e-04   1.6310e-03
    1.0950e-03   9.9000e-04
    3.2200e-04   9.7600e-04
    8.5500e-04   8.8900e-04

So it seems the Matlab result is the BER, while the Octave result
is the complement to the BER, the bit-not-in-error rate.  Maybe
Freddie can figure out why this might be.

Steve


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