MIMO with USRP

GNU Radio
1

hi, all :slight_smile:

I’m going to implement a 2 x 2 MIMO system with USRP and I came up with
some
problems of using USRP as sink and source.
I’m using FLEX 2400. At the Tx side. I’m going to use two flex2400s with
1
TX/RX on each. At the Rx side, only one flex2400 is enough, I guess,
because
both TX/RX and RX2 can do receiving.
The questions is how to make the two antenna at both Tx and Rx to work
syncronously.
If I instance two usrp_sink or source in one script, I’m afraid the two
antennas may work independently.
So in the .py script, how to set the usrp_sink and usrp_source and the
mux
value?

2

hanwen wrote:
At the Rx side, only one flex2400 is enough, I guess, because

both TX/RX and RX2 can do receiving.

No, you can receive from TX/RX or RX2, but not both at the same time.