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Re: simulation results from octave wrong!!!


From: Muthiah Annamalai
Subject: Re: simulation results from octave wrong!!!
Date: Thu, 2 Aug 2007 09:26:11 -0500

Check # of packets in Octave simulation. Using Law of large numbers, I think
it applies here, and youre looking at small samples of Octave codes.

Generally, the burden of proof is yours. Octave, almost always is never the
source of problems.

Thanks,
Muthu


On 8/2/07, Aquil H. Abdullah <address@hidden > wrote:
Hello Freddie,
  If you would like assistance you should provide a code sample, just looking at the results isn't very helpful.

On 8/2/07, Freddie Hamatanga <address@hidden> wrote:
I installed correctly Octave 2.9.13 with the Signal and Communication toolboxes, but when I run a Wireless LAN simulation programme, the results are very different from those obtained from matlab. What could be the problem? please help!! 
 
OCTAVE RESULTS 
 results from ofdm11g_RS.m
 Multipath?  Y  Bluetooth?  Y
 Trms 75 Actual PSDU Length 380 bytes  Data rate 18
 Codeword length255 Dataword length 191 Number of correctable errors 32
 Bluetooth SIR: 9 Number of erasures: 0
# Packets    Eb/No        BER                     PER
100                0             0.808694           1.000000
100                5             0.902395           1.000000
100                10           0.957872           1.000000
100                15           0.986852           1.000000
100                20           0.996711           1.000000
100                25           0.999372           1.000000
100                30           0.998905           1.000000
100                35           0.999678           1.000000
100                40           0.999145           1.000000

MATLAB RESULTS 
 results from ofdm11g_RS.m
 Multipath?  Y  Bluetooth?  Y
 Trms 75 Actual PSDU Length 380 bytes  Data rate 18
 Codeword length255 Dataword length 191 Number of correctable errors 32
 Bluetooth SIR: 9 Number of erasures: 0
# Packets           Eb/No        BER             PER
100                         0           0.203326       1.000000
103                         5           0.100329       0.970874
131                         10           0.037475       0.763359
259                         15           0.011161       0.386100
672                         20           0.003115       0.148810
1167                       25            0.001631       0.085690
1647                        30           0.000990       0.060716
1760                        35           0.000976       0.056818
1897                        40           0.000889       0.052715
 
 


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