Ads-b uses a 1 MHz pulse position modulation scheme Is this possible to create on gnu ?
Is it the data rate that makes the spectrum wide ? 7 MHz ? Also thinking about a b200 usrp looks nice Andrew vk4tec Sent from my iPhone > On 29 Jan 2014, at 10:29 pm, Marcus Müller <[email protected]> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi Neil, > > yes, this can't work; you can only multiply two numbers if there are > two numbers (factors). Which will never be the case, since there has > not been a multiplication before the first factor. > > Message passing can't make an flowgraph that has a synchronous path > ("normal" sample flow) asynchronous. What you most probably want is to > receive the message with a block that e.g. sets the factor in a > multiply_const block. > > Hope I could help a little, > Marcus > >> On 29.01.2014 13:15, MHMND Herath wrote: >> Dear sir I want to implement a feedback system for example attached >> feedbackmessageoassing.pdf attached. Its output is zero. No thing >> comes for output. I tested message passing in different ways. No >> clear output comes. For the above feedback system nothing comes >> out. Please help me. How to implement such a feedback syste. Thanks >> Neil >> >> >> >> _______________________________________________ Discuss-gnuradio >> mailing list [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJS6PQyAAoJEAFxB7BbsDrLGIsH/RFTQcOvjsEjHoXPbbhRKF6o > Ijh08glAHCxF4UVUl/NVRhx/jXBUZSPeFO7KBN/xw6ub9sWu7JhC1YW52AYXtz4a > AuFohOgRTZ6XbiheCsLBLXSpZSpIH6tiNQe5fXoFOnypJ1xpihixidi9hOKiJqKM > kKzinKYl7r9lzYOciqQCxRz4LbDlwKX2hYT3NoRnq9DvjO25pxM7aE7hUyMGQPPx > xrMAjYuHVekniDvDRvD7JsjMBw1huTv+Ooof1vTmtIu4BT8ikJsXmkvs29I4GWlk > zZ8N8isS3JyqZIsgskCLUeyLb0zHzWwIwiQ5hW52hdh/rfYzmVI/hGfWF/k3VWg= > =ynZf > -----END PGP SIGNATURE----- > > _______________________________________________ > 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
