Continueing with http://www.ruby-forum.com/topic/1983866, and http://www.ruby-forum.com/topic/1991680
I am trying to append preamble to a signal so that RX can recognize it and see a start position of data exactly. I roughly draw what I thought. [image: desired_signal.jpg] ( http://dl.dropbox.com/u/11382666/for_gnuradio_mailinglist/desired_signal.jpg ) I learned that there is gr_simple_framer and gr_simple_correlator in gnuradio. I guess that gr_simple_framer appends sync field and other files, and gr_simple_correlator removes additional fields by gr_simple_framer To verify this guess, I make a flow graph and run it. [image: framer_correlator_test.png] ( http://dl.dropbox.com/u/11382666/for_gnuradio_mailinglist/framer_correlator_test.png ) As a flow graph runs, file size of framer_sink goes large, but that of correlator_sink remains 0 forever. I have tried to figure out how I can use these blocks from doxygen ( http://gnuradio.org/doc/doxygen/) But I cannot figure out it easily. Does anyone know what value should be in Payload Byte Size for framer and correlator and where I can find some examples of these two blocks? -- Seokseong Jeon (aka Songsong Gee)
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