Oscar, if your frame size is constant, you may not need the header/payload demux. However, there's the rx_ofdm.grc example you can use to see how to connect it all together.
Cheers, M On 07/12/2016 12:53 AM, Oscar Sánchez wrote: > Dear all, > > I'm building an OFDM tx/rx with constant OFDM frame size. So far, no > header is required. Thus, each OFDM frame is composed of 2 OFDM symbols > for synchronization and N (constant) OFDM symbols for data. > > I want to use Schmidl & Cox synch. > > I require to generate, after Schmidl & Cox detect pulse, a stream of > (2+N)*M tagged complex numbers (M = OFDM symbol size) to perform channel > estimation and frame equalization. > > As in the example rx_ofdm, I was trying to use "Header/Payload Demux". > My idea was to use a block that generates a message for the > Header/Payload Demux message port when a detect pulse from Schmidl & Cox > is received. However, I didn't find any message generator module that > can be triggered with a signal. > > Another solution I though of was to use a module that puts a tag in a > stream when a trigger signal is received. > > Is my approach correct? Is there any gnuradio block I can use to solve > my problem? > > Best regards, > > Oscar > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
