Sorry for the long delay replying... Eric Blossom wrote: > If you're serious about this as a project for your master's thesis > and you're willing to contribute the code to the project, we can > probably find some way to get you a daugtherboard. Will the > university pay for the daughterboard? > >
Will try to convince them. Otherwise I'll sell my car ;-) Johnathan Corgan wrote: > I had started a receiver module in examples/python/dect, but didn't get > very far. What's there will tune to a supplied frequency, apply the > appropriate channel filter, demodulate the GMSK to (unpacked) bits, then > record to a file. I was able to "grep" the bits for DECT > pre-amble/synchronization codes and see them. > > Well, at least a starting point... > This was to be a "service monitor" type of application, not a base > station or handset. So none of the TDMA aspects were considered. We > still need (ahem) mblocks and in-band signaling to properly implement > either end of the protocol. > > Is there an ETA for the mblocks? I'm not that much in a hurry, I won't be able to start my thesis before next summer anyway. And I'll be happy to discuss something like a roadmap with you folks before proposing this project to a supervisor over here. No idea if it's too big for a MSc thesis ... > A base station stack that could handle a single DECT TDMA carrier would > be able to support 12 cordless phones full-duplex. Wrap it up in an > Asterisk channel driver and you have a small office cordless PBX for the > price of a USRP and PC, using entirely Open Source software. > > Yep, true, that's interesting from the political POV, but that's a rather expensive solution to get a SOHO cordless PBX... However, as a proof of concept it's worth the investment. And most likely cheaper than an "old school" enterprise PBX with the DECT features enabled and DECT base stations attached... > The DECT protocols are very well documented, and the handsets are very > cheap... > That's true. You even get SIP capable base stations over here in Europe for ~EUR 70-100 (USD 100-150) that allow you to assign different VoIP providers to different handsets, use IM on the handsets, ... but of course without source ;-). I wonder what other means to aid development are out there. I guess some kind of DECT monitor and/or base station with debugging capabilities would be really nice. If we do DECT in free software, we should be able to prove it's ETSI compliant ;-) Alex _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
