Re: [Discuss-gnuradio] USRP2 UHD Matlab Receiver Communications Blockset
On 09/10/2010 12:55 AM, Josh Blum wrote: On 09/09/2010 06:43 PM, Vincent W wrote: Hi, I stumbled on this blockset on the Matlab website: http://www.mathworks.com/help/toolbox/commblks/ref/usrp2receiver.html I've been making do with the old firmware and fpga, but when I saw this link, I became really excited - especially because it implies I can decrease the decimation on my USRP2 to 1 - perhaps by requesting real, single precision values instead of complex doubles. The minimum sustainable sample rate over the wire is 25Msps for the UHD (unless you change FPGA implementation). I dont know what FPGA code they are using. Also, I dont think these simulink blocks have UHD under the hood. Is there an open source version of that blockset? Alternatively, despite poking around the UHD API, it wasn't immediately obvious how I could change the type of data, or set a decimation of 1, from the uhd::usrp::simple_usrp class. I suspect it may have something to do with the uhd::io_type_t class, but, again, I'm not too sure. The device::send and device::recv calls take the IO type as an argument. The samples are converted between IO type and over-the-wire type in the UHD implementation code. -Josh Hi, It seems very likely that they do have uhd implimentation, if only judging by the support articles they've written about the usrp2, albeit with outdated firmware and fpga images: http://www.mathworks.com/support/solutions/en/data/1-CUN7JZ/index.html?product=CBsolution=1-CUN7JZ http://www.mathworks.com/support/solutions/en/data/1-D2KBPZ/index.html?product=CBsolution=1-D2KBPZ So, to be clear then, it's not possible to get 1x decimation, or change the output type, using the resourced above? Vincent ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP2 UHD Matlab Receiver Communications Blockset
On 09/10/2010 12:55 AM, Josh Blum wrote: On 09/09/2010 06:43 PM, Vincent W wrote: Hi, I stumbled on this blockset on the Matlab website: http://www.mathworks.com/help/toolbox/commblks/ref/usrp2receiver.html I've been making do with the old firmware and fpga, but when I saw this link, I became really excited - especially because it implies I can decrease the decimation on my USRP2 to 1 - perhaps by requesting real, single precision values instead of complex doubles. The minimum sustainable sample rate over the wire is 25Msps for the UHD (unless you change FPGA implementation). I dont know what FPGA code they are using. Also, I dont think these simulink blocks have UHD under the hood. Is there an open source version of that blockset? Alternatively, despite poking around the UHD API, it wasn't immediately obvious how I could change the type of data, or set a decimation of 1, from the uhd::usrp::simple_usrp class. I suspect it may have something to do with the uhd::io_type_t class, but, again, I'm not too sure. The device::send and device::recv calls take the IO type as an argument. The samples are converted between IO type and over-the-wire type in the UHD implementation code. -Josh I stand corrected; it seems like they are using the udp drivers, as opposed to the uhd drivers. My bad. vvv ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP2 UHD Matlab Receiver Communications Blockset
Hi, I stumbled on this blockset on the Matlab website: http://www.mathworks.com/help/toolbox/commblks/ref/usrp2receiver.html I've been making do with the old firmware and fpga, but when I saw this link, I became really excited - especially because it implies I can decrease the decimation on my USRP2 to 1 - perhaps by requesting real, single precision values instead of complex doubles. Is there an open source version of that blockset? Alternatively, despite poking around the UHD API, it wasn't immediately obvious how I could change the type of data, or set a decimation of 1, from the uhd::usrp::simple_usrp class. I suspect it may have something to do with the uhd::io_type_t class, but, again, I'm not too sure. Has anyone had a chance to play around with this blockset, or know how it works? It looks _really_ neat, and appears to work with wbx boards. Vincent W ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
