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For the really interesting stuff (GSM + CDMA cellular) this is a "cross that bridge when you get there" kind of problem. Before you can get on the airwaves you

For the really interesting stuff (GSM + CDMA cellular) this is a "cross that bridge when you get there" kind of problem. Before you can get on the airwaves you need to break the Qualcomm/Broadcom stranglehold on cellular basebands and if you do that (by developing the open source hardware + software implementing RF/protocols) then the licensed spectrum bit becomes tractable. AFAIK much of the rest of the spectrum, licensing + part procurement is significantly easier and although there are some more monopolies they are nowhere near as bad as Qualcomm/Broadcom.

mschuster91 12y ago
At least on the baseband front there's OsmocomBB, what they lack iirc is hardware.
- rasz_pl 12y ago
  OsmocomBB is not the way, what they have is a patchset over closed source GSM firmware, they merely patch DSP firmware on the baseband to bend it a little. but we already have open source GSM/LTE implementations, everything is ready from the hardware (various SDRs), thru baseband openbts, to whole network controllers like openbsc
zw123456 12y ago
My take on it is to not bother with the older GSM and CDMA but to instead focus on LTE. Although GSM will probably be around globally for a while, it is on the wane as is CDMA. There is a lot of interesting open work going on for LTE including LTE on unlicensed bands. http://sourceforge.net/projects/ltemodem.motorola/ http://sourceforge.net/projects/ltemodem.motorola/ http://www.eurecom.fr/en/content/virtulization-lte-softmodem http://www.eurecom.fr/en/content/virtulization-lte-softmodem http://sourceforge.net/projects/openlte/ http://sourceforge.net/projects/openlte/
- evanwolf 12y ago
  Is there a low-power variety of LTE to improve battery life on devices?