Hi Pengyu, 1. the USRPs are full duplex capable, so you can get away with just using two. 2. You should not use a router. A switch would be ok. Please note that you can't get more than 1Gb ~= 32MS/s over the single Gigabit link between your PC and the switch, so it's better to use a PC with two network cards connected to one USRP each, so you get more bandwidth.
Greetings, Marcus On 03/13/2015 01:53 PM, Pengyu Zhang wrote: > Hi, > > I want to build a 2x2 mimo system using USRP N210. Would be great to > get some instructions. I have the following questions. > > 1. As the following figure shows, should I use four N210s where two of > them act as TX and the other two act as RX? Or can I use just two N210s? > > 2. When a router is used for connection as the following figure shows, > how should I assign IP address for each of the USRP and the router > itself? The subnet address (192.168.10.2 and 192.168.20.2) used for > each USRP described in the following link is confusing for me... > > http://files.ettus.com/manual/page_usrp2.html > > Thanks. > > Pengyu > > Inline image 1 > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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