Re: [Discuss-gnuradio] OFDM IFFT calculate

2016-05-30 Thread Marcus Müller
Ah, forgot to actually cite one thing: On 30.05.2016 14:49, Marcus Müller wrote: > >> I can't find its' implementation in anywhere so that I can't >> understand what happen in this function. > A DFT is performed, by calling the fftwf_execute function of the FFTw > library, which really, just

Re: [Discuss-gnuradio] OFDM IFFT calculate

2016-05-30 Thread Marcus Müller
Hi SangHyuk On 30.05.2016 14:25, SangHyuk Kim wrote: > Hi all, > > The file, /gr-fft/lib/fft_vcc_fftw.cc(http://goo.gl/X8WNPh), No need to use URL shorteners in Emails. Why are you using a revision of that file from 2012? That is not what you should do. Select "branch: Master" from the drop-down

[Discuss-gnuradio] OFDM IFFT calculate

2016-05-30 Thread SangHyuk Kim
Hi all, The file, /gr-fft/lib/fft_vcc_fftw.cc(http://goo.gl/X8WNPh), changes domain from frequency to time using IFFT(Inverse-Fast-Fourier-Transform). It takes parallel subcarriers in frequency-domain (it is defined 'in' in the file) and converts it into time-domain(it is defined 'out'). I can