bcmwl-kernel-source software package provides Broadcom 802.11 Linux STA wireless driver source, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install bcmwl-kernel-source
bcmwl-kernel-source is installed in your system.
Make ensure the bcmwl-kernel-source package were installed using the commands given below,
$ sudo dpkg-query -l | grep bcmwl-kernel-source *
You will get with bcmwl-kernel-source package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Administration Utilities |
| Package | bcmwl-kernel-source |
| Version | 6.30.223.248+bdcom-0ubuntu8 |
| Description | Broadcom 802.11 Linux STA wireless driver source |
| Sub Section | admin |