Rank: 882 based on 79 downloads (last 30 days) and 3 files submitted
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Bogdan Cristea

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PhD engineer

http://cristeab.googlepages.com

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15 Sep 2010 Screenshot EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea exit charts, turbo receivers, siso modules, map algorithms, communications, maximum a posteriori ... 9 4
  • 5.0
5.0 | 2 ratings
24 May 2007 txtprogressbar show simulation progress and remaining time as text Author: Bogdan Cristea simulation progress 4 0
30 Aug 2005 Screenshot Chaotic Generators Demo With chaotic generators demo various types of chaotic generators can be studied. Author: Bogdan Cristea attractor, bifurcation diagram, chaos, miscellaneous, utilities 66 3
  • 4.33333
4.3 | 3 ratings
Comments and Ratings by Bogdan View all
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27 Feb 2010 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea

The cpp file you are using is not included in the archive from MATLAB central. C_SISOrsc.cpp uses algorithms now included into IT++ library. You should either install IT++ library before trying to compile that file, or customize yourself SOVA implementation in order to become independent from IT++.

02 Nov 2009 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea

R is the rate of the turbo code, which has a rate of 1/3 when there is no puncturing pattern

29 Oct 2009 wimax physical layer simulation Wimax physical layer simulation using mandatory channel coding. Author: Deepak Rathore

Could you provide a simulation with multipath channels ?

11 Oct 2009 Soft Input Soft Output Viterbi Algorithm Implementation of the SISO Viterbi algorithm. Author: Adrian Bohdanowicz

Useful code, however I have some doubts about its correctness. When the transition metric in computed, the AWGN noise variance is not taken into account, while the code rate is used. This seems to me wrong.

26 Aug 2009 Log MAP decoder Log MAP decoder for feedforward & feedback convolutional codes Author: Hari Moorthy

 - This implementation is not well suited for turbo decoding since the function input is the channel output. I would suggest to modify the function inputs in order to accept directly some LLRs. Thus the last parameters, Lc, shall be no longer needed.
- I would like to have an option for using terminated or unterminated trellis
- The code also should be cleaned

Comments and Ratings on Bogdan's Files View all
Updated File Comment by Comments Rating
24 Aug 2010 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea Alan, Tanyer
27 Feb 2010 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea Cristea, Bogdan

The cpp file you are using is not included in the archive from MATLAB central. C_SISOrsc.cpp uses algorithms now included into IT++ library. You should either install IT++ library before trying to compile that file, or customize yourself SOVA implementation in order to become independent from IT++.

06 Feb 2010 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea Lee

Thank you for your valuable code.
For matlab simulation using C_SISOsova.cpp, I need dll file.
However, Even after several attemps using mex, I cannot generate dll file.
If it is possible, could you send me dll files for C_SISOsova.cpp
& C_SISOrsc.cpp? Please, give me help.
P.S. : I am not familiar with usage of mex.
         Matlab command window continuly complains as following message. Could you give me solution?
fatal error C1083: Cannot open include file: 'itpp/itmex.h': No such file or directory

02 Nov 2009 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea Cristea, Bogdan

R is the rate of the turbo code, which has a rate of 1/3 when there is no puncturing pattern

28 Oct 2009 EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea guang, chengdu

I think the code rate R should be equal to 1/2 not 1/3

Top Tags Applied by Bogdan
attractor, bifurcation diagram, chaos, communications, digital communications
Files Tagged by Bogdan View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
15 Sep 2010 Screenshot EXIT chart computation Matlab class implementing several methods for the computation of EXIT charts. Author: Bogdan Cristea exit charts, turbo receivers, siso modules, map algorithms, communications, maximum a posteriori ... 9 4
  • 5.0
5.0 | 2 ratings
24 May 2007 txtprogressbar show simulation progress and remaining time as text Author: Bogdan Cristea simulation progress 4 0
30 Aug 2005 Screenshot Chaotic Generators Demo With chaotic generators demo various types of chaotic generators can be studied. Author: Bogdan Cristea attractor, bifurcation diagram, chaos, miscellaneous, utilities 66 3
  • 4.33333
4.3 | 3 ratings

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