On the MATLAB® Home tab, in the Environment section, click Add-Ons > Get Hardware Support Packages.
In Add-On Explorer, browse or search for the Communications Toolbox™ Support Package for RTL-SDR Radio.
Select the support package and then click Install.
During support package installation, you will be prompted to install the drivers needed for the RTL-SDR Radio software.
For more information, see Get and Manage Add-Ons (MATLAB).