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

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] instructions for 2x2 mimo with USRP N210
Date: Fri, 13 Mar 2015 16:06:59 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

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.


On 03/13/2015 01:53 PM, Pengyu Zhang wrote:

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 ( and used for each USRP described in the following link is confusing for me...



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