[A51] trasceiver Vs receiver only

2010-07-23 Thread Dinos Pastos
Guys i need a quick answer on this. a WBX 50 MHz to 2.2 GHz Transceiver is sufficient enough for an USRP2 to read the full GSM spectrum ? compared to a DBSRX 800 MHz to 2.4 GHz Receiver which one is advised to use? do i need both ? ___ A51 mailing

Re: [A51] trasceiver Vs receiver only

2010-07-23 Thread Cal Leeming [Simplicity Media Ltd]
The DBSRX does say it can handle a 60mhz wide band, but I don't know how accurate it would be.. And yeah, the amount of data coming back would be insane.. Talking hypothetically here... there's no way you could decode every single one of those data streams on the fly, at least, not without

Re: [A51] trasceiver Vs receiver only

2010-07-23 Thread Dinos Pastos
I ordered both DBSRX and WBX to be sure (im sure by next week after the blackhat conference these items will run out of stock instantly) On Fri, Jul 23, 2010 at 3:52 PM, Cal Leeming [Simplicity Media Ltd] cal.leem...@simplicitymedialtd.co.uk wrote: The DBSRX does say it can handle a 60mhz

Re: [A51] trasceiver Vs receiver only

2010-07-23 Thread Sylvain Munaut
Talking hypothetically here... there's no way you could decode every single one of those data streams on the fly, at least, not without investing some serious cash. You could dedicate time. You could do some preprocessing on the FPGA (demod) to reduce the amount of data to bring back. Surely

Re: [A51] trasceiver Vs receiver only

2010-07-23 Thread Sylvain Munaut
On Fri, Jul 23, 2010 at 3:11 PM, Cal Leeming [Simplicity Media Ltd] cal.leem...@simplicitymedialtd.co.uk wrote: Silly question but, when a new tmsi is issued by the vlr, how does the handset get told what its new TMSI is (or does it never know itself?) New TMSI are only issue during LOCATION

Re: [A51] trasceiver Vs receiver only

2010-07-23 Thread Sylvain Munaut
I suggest to anyone interested to : * Read the Um interface page on wikipedia http://en.wikipedia.org/wiki/Um_Interface * In GSM 04.08, Section 3 4 5 which details the procedures for Radio Resource (RR) , Mobility Management (MM) Call Control (CC). * GSM 05.01 for an introduction at how