At this point, the bottleneck is the lack of FPGA skills. All steps of the OpenBTS decode chain could be implemented on the USRP (and then parallelized for multi-channel sniffing) but nobody knows how to do it.
------Original Message------ From: Sascha Krissler Sender: [email protected] To: [email protected] Subject: Re: [A51] USRP2 Sent: Dec 9, 2009 11:59 On Wed, Dec 09, 2009 at 10:35:40PM +0100, Frank Rieger wrote: > That topic is being extensively discussed on the airprobe-main > mailinglist. > (https://svn.berlin.ccc.de/projects/airprobe/wiki/MailingLists) > > A really good solution has not been found, except for using multiple > receivers. the good solution would be to demodulate the channels on the FPGA. is this technically possible? is it possible to do some steps of the whole demodulation process on the FPGA to reduce bandwidth requirements and then the rest on the host? another good enough solution would be to transmit only active channels without any demodulation. is it a hardware limitation or lack of manpower? _______________________________________________ A51 mailing list [email protected] http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51 _______________________________________________ A51 mailing list [email protected] http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51
