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When a LaTeX doc is opened, there is an Abbreviations tab where you could add user-defined abbreviations. I have found this tool quite useful, however it can be annoying if the sequence to be replaced is too common.
2009-11-01 05:15:51 UTC in Kile KDE LaTeX Editor
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Well, in this case something like Array<vec> should do what you need. Not sure how to handle very large vectors, but you could try. There is also support for sparse vectors/matrices.
2009-10-30 16:17:52 UTC in IT++
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I am using IT++ 4.1.r1681. The HTML help for modulate method from OFDM class is as follows:
cvec modulate (const cvec &input)
Modulate complex data symbols. Length of input must be Nfft.
This is wrong because the input length should be a multiple of Nfft. Same issue for demodulate() method.
I would like to report this as a bug. Please confirm.
2009-10-30 08:48:51 UTC in IT++
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I am not sure that I have understood your problem. Do you mean 3D matrices? You could use for this Array class.
2009-10-30 05:33:05 UTC in IT++
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The above example cannot work correctly since after the multipath channel an equalizer must be used. coeff matrix has 5000 rows and 4 columns, thus 5000 samples and 4 taps. So, the intersymbol interference must be quite important. I don't understand what is the role of Ts variable, but I assume that it must be related to the channel impulse response sampling time.
For the initial problem...
2009-10-20 18:16:55 UTC in IT++
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Replying to myself: a possible solution would be the compilation of mex files using static libraries.
The above problem exists only on an AMD Athlon64 machine running openSUSE. On my laptop, with Atom Intel processor and the same OS, this problem does not exist.
2009-10-20 10:40:08 UTC in IT++
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From your message I don't see where you set de parameters of OFDM modulator, namely the length of the cyclic prefix. This is important when transmitting into multipath channels.
Please provide a complete and simple code example of your simulation, starting from bit generation and ending to BER computation.
2009-10-20 10:11:49 UTC in IT++
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The snippet below seems to work, but I don't understand well why you say that the simulation results are wrong. Perhaps you should provide a more complete description of your problem.
The channel coefficients and the input filtering are generated by () operator. So you don't need to use generate() function before filtering the input. Here is the help on () operator:
cvec operator() (const.
2009-10-20 08:55:33 UTC in IT++
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Hi
It would be useful to post a minimal example of what are you trying to do in oder to get help from IT++ community.
regards
Bogdan.
2009-10-20 06:37:34 UTC in IT++
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I often translate the most computationally expensive routines in C++ using IT++, then I call these routines from Matlab as mex files. The problem seems to be that Matlab does not handle properly calls to routines from blas/acml libraries. Both, Matlab and IT++ use these libraries, but they are stored in different places.
Short example:
buf =...
2009-10-13 15:54:13 UTC in IT++
