Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.
The supported version for Ubuntu 16.04 LTS is ROS Kinetic.
You can find the tutorial to install here and should take you just a couple of mins to install ROS Kinetic.