Dear All, Thanks for the many and prompt replies to my posting. We now have a sort of BPSK demodulator, issues beyond my grasp still remains but tests are being conducted. Josh gave us the first real kick forward and an off-line Gnuradio/GRC expert mailed us an 99,9% ready made GRC file. (Only had to fiddle with the freq.) So I have chosen to award both with a cake.
Thanks René René Fléron wrote: > > Dear Community, > > We've been working with USRP and Gnu Radio for various tasks in our > Cubesat project for some time now. Recently we thought of using the set-up > (Linux Ubuntu, USRP (1) and Gnu Radio / GRC) for receiving, decoding and > recover data from our ground based payload. We are not flying the USRP > onboard our satellite but want to use it for the in-field test of the > ground based payload. > Through-out the project we've been searching for any BPSK receiver > (anything like: an off-the-shelve radio, add-on modules for existing > radios, DIY radio kit or perhaps USRP and Gnu Radio). Nothing. > Yes, I have searched this forum for previous posts (I found 89 threads on > BPSK), none of them have a solution/design. > I seriously doubt that making a regular BPSK receiver that goes > all-the-way, i.e. recovers the transmitted data has ever been done. We > haven't found any trace of anything be it commercial, research or DIY. > > Desperate times calls for desperate measures. > If you can make a BPSK receiver that will run in Gnu Radio (preferably GRC > as I'm not a programmer) I will buy you a cake of your own choice from one > of the internet cake delivery companies. If you want "1. prize details" > have a look at our webpage with the offer: > http://www.dtusat.dtu.dk/index.php?id=112 > > Dead-line is 11. May 2009 - after that the conclusion is: BPSK is not an > I.R.L. thing but merely a mathematical curiosa and we'll go for one of the > more ordinary modulations. > > Questions are off course welcome. > > PS: The transmitter run at 868 MHz. > > Cheers, > René Fléron > -- View this message in context: http://www.nabble.com/BPSK-Demodulator-%28i.e.-Receiver%29-Award-Challenge-tp23404610p23525388.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
