Hello Ozair Iqbal, You can't (without using more SDR transceivers or making major modifications to the hardware). USRP-2901 (USRP B210) is only capable of 2x2 MIMO. You can switch between TX/RX and RX2 ports, but you cannot receive from all antenna ports concurrently (USRPs with switchable daughterboards may let you break down one I-Q RX chain to two, but B210 isn't the one).
You will have to get more boards and synchronize them together using a common clock, or develop an algorithm that works with 2 antennas (+ 2 switchable antenna ports). Regards, Kyeong Su Shin On Fri, Jul 14, 2017 at 10:11 AM, Ozair Iqbal via USRP-users < [email protected]> wrote: > Hi, > I am using SDR's (NI/2901) for my experiment.From one end, I am > transmitting a signal using Tx//RX port of 1st SDR. While at the other > end , I want to receive the same signal using four antenna by connecting > them at all the four ports (two Tx/Rx, two Rx) of the 2nd SDR at the same > time. But I am receiving the same signal using two antennas(connected at > two RX ports) of second SDR and not by using all the four antennas. > What will be the solution of this problem so that I can receive the signal > using four antennas at the same time. > > Regards, > > > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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