Hello everyone, I was trying to implement some OFDM transmission with a rfx2400 without using the ofdm code that comes with gnuradio but creating my own one. I make a 256 bean Ifft transform after the windowing, and I've tried two different types of window the rectangular one (aka no window :) ) and the hamming one. Transmitting I try to have a look at the spectrum of the signal with another USRP and a spectrum analyzer. The first problem comes with the spectrum shape: it is not "flat" it has a "rised cosine" shape, with both windowing, I feel it's the transmission filter... am I correct? The second is for the side lobe, zith the rect window they're pretty high... but zith the hamming one I don't know what kind of window I should use in Rx to recover, any hint?
Thank you a lot for your answer. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
