On Wed, Aug 29, 2007 at 09:40:58PM -0500, Ketan Mandke wrote: > Martin, > > Thanks for your response. It is disappointing to hear that the MIMO > support for 4 antennas will not be available for some time.
Addressing your disappointment: This is a free software project. Code gets written because some actual human being writes it ;) If you're waiting for somebody else to write it, you may be waiting for a long long time... > Could you provide some more details into why this problem of aligning > the transmit samples will be easier in the new m-block framework? Will > these new packet oriented m-blocks utilize a different interface to > the USRP which will make this alignment-task easier? There will be a new interface. More on that when it becomes available. Each frame to be transmitted will have a timestamp that specifies the time that it is to be transmitted. You still have to sync the sample clocks and LO's on the separate USRPs, but there will be a way to communicate, in-band, when you want the frame to be transmitted. Low-level design ideas are described here: http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/doc/inband-signaling-usb They are subject to change... See also: http://gnuradio.org/trac/wiki/MessageBlocks Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
