**** BEGIN LOGGING AT Mon Apr 24 09:59:58 2006
Apr 24 22:46:52 <key2> is there any open gsm implementation ? Would it be possible to use an ARM9 + transceiver + SIM to connect to a gsm network ?
Apr 24 22:53:01 <p2-mate> afaik there is no open gsm implementation
Apr 24 22:56:12 <key2> sucks
Apr 24 22:56:31 <key2> p2-mate: but you think with an ARM9 it would be possible to add a transceiver and make one ?
Apr 24 22:57:16 <p2-mate> hmm
Apr 24 22:57:39 <key2> ?
Apr 24 22:57:41 <p2-mate> I don't know how much CPU the codec + baseband modulation would take
Apr 24 22:58:19 <key2> more than 200mhz ?
Apr 24 22:58:33 <key2> when GSM was created, there was no 200MHZ pc
Apr 24 22:58:34 <key2> :)
Apr 24 22:59:11 <p2-mate> no, but DSPs or dedicated can do that more efficiently then a 200Mhz ARM9 :)
Apr 24 22:59:23 <p2-mate> s/dedicated/dedicated hw/
Apr 24 22:59:23 <purl> p2-mate meant: no, but DSPs or dedicated hw can do that more efficiently then a 200Mhz ARM9 :)
Apr 24 22:59:38 <p2-mate> yes indeed
Apr 24 22:59:57 <p2-mate> maybe you can do it on an arm9. I just don't know
Apr 24 23:02:15 <p2-mate> OTOH it seems most phones still have a DSP next to an ARM
Apr 24 23:12:39 <key2> dsp for gsm codec ?
Apr 24 23:23:24 <key2> http://www.analog.com/en/prod/0,2877,AD6720,00.html
Apr 24 23:23:28 <key2> runs on an ARM7
Apr 24 23:23:34 <key2> http://www.ttpcom.com/en/downloads/TTPCom_Cellular_Protocol_Stacks.PDF
Apr 24 23:23:39 <key2> and that's the stack it uses
Apr 24 23:25:24 <p2-mate> also for the baseband stuff
Apr 24 23:25:54 <p2-mate> euh. it's a DSP and an ARM7
Apr 24 23:28:19 <key2> yeah
Apr 24 23:28:22 <key2> in fact it is
Apr 24 23:28:24 <key2> i just noticed
Apr 24 23:28:44 <key2> but could be much cheaper than the GR48 from sony ericson or the telic module (usually 75eur each)
Apr 24 23:29:16 <p2-mate> yeah, probably
Apr 24 23:29:35 <p2-mate> but requires a lot of work to get all the sw working...
Apr 24 23:29:57 <key2> sw?
**** ENDING LOGGING AT Tue Apr 25 09:59:57 2006