Hi Bruce, Should the satellite do FEC?
Alan VK2ZIW On Wed, 16 Jan 2019 14:30:23 -0800, Bruce Perens wrote > In general, it's better to make the satellite a data pipe or an analog pipe, > and allow people to control what codec they are using on the ground. It lets > you test more different codecs, etc. > > On Wed, Jan 16, 2019 at 1:25 PM cshearer <cshea...@pa.net> wrote: > Hello, > Starting plans of a cube sat project and have been contemplating > the use of this codec method (instead of other possible options) for the > project and not sure if this has been yet done or what the thoughts > would be on the use of this codec vs other methods as I want to > incorporate both digital voice and analog voice options. Initial > thoughts are to use DV codec2 method for possible greater benefits for > both better RF & audio qualities vs analog FM for a cross banded voice > repeater as a part of the satellites mission. The implementation would > be via on board modem to transmit the digital modulation using an MCU > for the direct modulating of the down-link from the received analog > up-link input. > > Possible mode configurations would be: > Mode 1 = Up-link Analog FM / Down-link DV Narrow band (Modulated > directly onboard satellite via MCU hardware modem) > Mode 2 = Up-link DV Narrow-band / Down-link DV Narrow-band (Direct pass > through of digital data signal, no reprocessing of signal) > Mode 3 = Up-link Analog FM / Down-link Analog FM > > These configuration modes would allow real time in flight mission > testing / comparison of the DV codec2 vs analog in 2 different > configurations) > > Would like to know thoughts and would appreciate any points of > discussions for this application. > > Thank you, > NE3KO > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > Alan Evil flourishes when good men do nothing. Consider the Christmas child. --------------------------------------------------------------------------- Alan Beard Unix Support Technician from 1984 to today 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc.. +61 2 47353013 (h) Support Programming, shell scripting, "C", assembler 0414 353013 (mobile) After uni, electronics tech
_______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2