IBM 28GHz PAAM Basics

Description

In this tutorial, we demonstrate the basic use of the IBM 28GHz phased array antenna modules (PAAMs) with USRP N310 software-defined radios (SDRs) in the ​COSMOS Sandbox2 (sb2).

Author: Tingjun Chen, Duke University / Columbia University (tingjun.chen [at] duke [dot] edu)

Last updated: Apr. 11, 2021

Prerequisites

In order to access sb2, create a reservation in sb2 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)
• 2 IBM 28GHz PAAMs (rfdev2-1 and rfdev2-2)
• 1 Server (srv1-lg1)

Tutorial Setup

Follow the steps below to gain access to the sb2 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 sb2 console (console.sb2.cosmos-lab.org) with two SSH sessions.
4. Make sure all the nodes and devices used in the experiment are turned off:

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

5. Use the baseline-28ghz-paam.ndz node image with Ubuntu 18.04, UHD 3.15, gnuradio 3.8, and the IBM 28GHz PAAM API. Load baseline-28ghz-paam.ndz on the server.

   omf load -i baseline-28ghz-paam.ndz -t srv1-lg1
   

6. Turn all the required resources on and check the status of all resources

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

   omf stat -t system:topo:allres
   

7. ssh to the the same server from two terminals, use option -Y for using GUI.

   [Terminal 1] ssh -Y root@srv1-lg1