On 08/28/2012 12:19 AM, Pan, Luyuan wrote: > Hello, > I want to implement a MIMO system using USRP2, I just have USRP2s and > MIMO cable. > 1. Do I have to use an external clock source ?
No. With the mimo cable, you can share a clock reference between a pair of devices > 2. I searched the maillist and found: Each USRP2 can handle 1 antenna > with most daughterboards, or 2 if you > have your own external RF sections connected to the USRP2 at IF. > Does it mean I should buy "external RF sections" to use 2 antennas on 1 > USRP2? Or where can I get them? You should select a daughterboard based on the desired frequency coverage. Typically transceiver boards have 1 tx frontend and 1 rx frontend. The TVRX2, which is RX only, has 2 rx frontends. > 3. If I want to build a 2X2 MIMO system,-- 2 USRP2s, 1 MIMO cable, the > "external RF sections" said above, -- Is that enough? > Correct. You may also find these notes helpful: http://files.ettus.com/uhd_docs/manual/html/sync.html -josh _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
