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Table of Contents
RIS Operation Tutorial
To Fill In
This Tutorial assumes that you have followed the basic CorteXlab operation tutorials (at least GNU Radio benchmark example, and Eyes and ears inside CorteXlab, but GNU Radio benchmark, interactive command execution and GNU Radio benchmark example with docker are recommended)
Here, we will go through an experiment using and operating the reflective intelligent surface (RIS) installed in the CorteXlab room, that should showcase all that is necessary to drive it for your own experiments.
We assume prior knowlegde of the concept of RIS and its uses. We focus on the technical operation of the one we have installed in the room. .
The RIS
The RIS currently installed in SLICES/CorteXlab is a prototype of a FR1 RIS by Greenerwave.
It is in the form of a flat square 40cm on a side and designed to operate on a wide 800MHz band centered around 3.7 GHz with a 120° field of view on both azimuth and elevation.
It contains 128 reflective elements, with one bit control (on/off), arranged in pairs in a 8×8 square. One element of the pair handling vertical polarisation, the other horizontal.
You can find more technical information about it and request their specsheet on their website.
The room setup
Please check with the CorteXlab Team for changes to that setup (and to check if it has changed)
The RIS is currently hanging off the ceiling railings, inbetween nodes 31 and 33, and pointing to the “east” of the room's map (see the crude pdf map).
It is connected to node 31 via USB for power and control, so we will have to use that node to drive it.
The RIS installation is designed to be easy to relocate so feel free to contact the CorteXlab team if you want to run experiments with the RIS in a different location (we may need to plug it in a different node).
To show a more interesting, non line-of-sight scenario, some wall panels with RF absorbing foam have been setup between nodes 35 and 39 (again, see the map). As for the RIS itself, they are designed to be relocated, so don't hesitate to tell us if you need them elsewhere.