I'm interested in demodulating the simple PPM signal commonly used for RC aircraft control in the 72 MHz band. While searching, I came across a post to this list back in 2005 where Chuck Swiger linked to a page that looked interesting, but the page isn't up and archive.org doesn't go that deep.
Does anyone have a copy of that page, or have any ideas for other references that might be useful? I've included a few notes that I've accumulated below. Thanks! Peter http://en.wikipedia.org/wiki/Pulse-position_modulation Lab notes with some details about PPM modulation/demodulation: http://www.eng.auburn.edu/~troppel/courses/TIMS-manuals-r5/TIMS%20Experiment%20Manuals/Student_Text/Vol-D2/D2-11.pdf Has good MATLAB PPM generation code: https://www.ee.oulu.fi/research/ouspg/RFID%20Audit%20Toolkit Paper on PPM demodulation techniques aimed at the optical world, but mentions trivial approaches: http://users.ece.utexas.edu/~bnosratmakouei/index_files/papers/PPMdemodulation.pdf Old message: http://lists.gnu.org/archive/html/discuss-gnuradio/2005-05/msg00066.html > From: cswiger > Subject: [Discuss-gnuradio] radio control transmitter signal > Date: Wed, 4 May 2005 16:37:09 -0400 (EDT) > Gang - Here's a little bit on receiving a model aircraft R/C > transmitter signal. Get a great demod PPM output - the challenge > would be to write a signal processing block to output each channel > position. Switching to PCM might be easier to work with tho. > > http://webpages.charter.net/cswiger/rc_nbfm.html > > --Chuck _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio