Re: [Discuss-gnuradio] instructions for 2x2 mimo with USRP N210

[Marcus Müller]

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

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