IBM 28GHz PAAM: Integration with USRPs with MIMO capability

Description

In this tutorial, we demonstrate the integration of IBM 28GHz PAAM boars with USRPs. We present the MIMO capability with real-time baseband processing using the system.

• The instructions for the RENEW Platform Agora software can be found ​here under ​RENEW license.
• The COSMOS team contributes to adding the UHD support for the Agora software under the ​UHD license. We thank the RENEW team for their support and help throughout the process.

Authors:
Zhenzhou (Tom) Qi, Duke University <zhenzhou.qi[at]duke[dot]edu>
Tingjun Chen, Duke University <tingjun.chen[at]duke[dot]edu>

Last updated: July 5, 2023

Prerequisites

In order to access COSMOS-SB2, create a reservation in COSMOS testbed and have it approved by the reservation service. Access to the resources is granted after the reservation is confirmed. Please follow the process shown on the COSMOS getting ​started page to get started.

Resources Required

• 2 USRP N310 SDRs (sdr1-s1-lg1 and sdr1-md1 in SB2)
• 2 IBM 28GHz PAAMs (rfdev2-1 and rfdev2-2 in SB2 )
• 1 Server (srv1-lg1)

The current hardware connection in SB2 as shown below

• sdr1-s1-lg1 RF2 TX/RX — rfdev2-1 IC0/TX/H, sdr1-s1-lg1 RF2 RX2 — rfdev2-1 IC1/RX/H
• sdr1-s1-lg1 RF3 TX/RX — rfdev2-1 IC0/TX/V, sdr1-s1-lg1 RF3 RX2 — rfdev2-1 IC1/RX/V
• sdr1-md1 RF2 TX/RX — rfdev2-2 IC0/TX/H, sdr1-md1 RF2 RX2 — rfdev2-2 IC1/RX/H
• sdr1-md1 RF3 TX/RX — rfdev2-2 IC0/TX/V, sdr1-md1 RF2 RX2 — rfdev2-2 IC1/RX/V

Tutorial Setup

Follow the steps below to gain access to the sandbox console and set up nodes with appropriate images.

1. If you don't have one already, sign up for a ​COSMOS account
2. Create a resource reservation on COSMOS SB2
3. Login into sandbox console console.sb2.cosmos-lab.org) with four SSH sessions.
4. Make sure all the nodes and devices used in the experiment are turned off. Use the first command for SB1 and the second command for SB2 (note the difference in the device names)

   omf tell -a offh -t sdr1-in1,sdr1-in2,rfdev4-in1,rfdev4-in2,srv1-lg1
   

   omf tell -a offh -t sdr1-s1-lg1,sdr1-md1,rfdev2-1,rfdev2-2,srv1-lg1
   

5. Use the paam28GHz-tutorial-cosmos.ndz node image with Ubuntu 18.04, UHD 3.15, gnuradio 3.8, and a grc example used in this tutorial. Load paam28GHz-tutorial-cosmos.ndz on the server.

   omf load -i paam28GHz-tutorial-cosmos.ndz -t srv1-lg1
   

6. Turn all the required resources on and check the status of all the resources. Use the following commands for SB1 and SB2.

   omf tell -a on -t sdr1-in1,sdr1-in2,rfdev4-in1,rfdev4-in2,srv1-lg1
   

   omf tell -a on -t sdr1-s1-lg1,sdr1-md1,rfdev2-1,rfdev2-2,srv1-lg1
   

   omf stat -t all
   

7. ssh to the server with option -Y for using GUI with gnuradio.

   ssh -Y root@srv1-lg1