I have had the opportunity to try to learn OFDM since about 1998. However, I was involved more in encoding and multiplexing, up to where the signal goes into the modulator as a baseband multiplex. For me that was mostly a satellite (DVB-S) modulator. So I resisted OFDM.
Having to learn about DVB-T2 and in particular DVB-T2 MI (Modulator Interface) changed the scene somewhat, since frames and things already appear in the DVB-T2 Gateway. So I really want to try to learn.
With electronics and computers I have found that I can only understand something when I can touch and feel it, tinker with it... So I found this simulation, and although there is a nice mathematical paper OFDM Transmission simulation using GNU Octave, by Rodolfo I. Ledesma, I could not find any code that works in Octave. I don't have Matlab and am not planning to buy it soon. In my next post, I will explain where to download everything you need and slightly modify the code to make it work in GNU Octave.
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