The Random Line of Sight measurement chamber

The Random Line of Sight measurement chamber is a solution for testing wireless performance of cars.

The solution systematically simulates real usage on highways and in cities, and all relevant standards can be measured; such as 3G, 4G, 5G and WiFi.

The Solution is based on the Random Line of Sight technology, developed by Professor Per-Simon Kildal at Chalmers University of Technology.


The Random Line of Sight solution makes early stage accurate testing possible, which enables the car manufacturers to;

  • Shorten test lead times
  • Improve wireless performance
  • Ensure functionality in safety and infotainment systems
  • Meet requirements that telecom operators place on network users

Our Heritage & History

RanLOS AB was founded in 2015 by Professor Per-Simon Kildal at Chalmers University of Technology in Gothenburg, Sweden. RanLOS has applied for a patent of Random Line-of-Sight measurement set-up OTA (Over The Air), to be used for testing of communication with cars. The solution is based on research from Chalmers University of Technology and includes antennas from Gapwaves AB. Professor Per-Simon Kildal has commercialized a number of inventions. The Comhat antenna has been sold in over one million units and is deployed worldwide in Ericsson’s minilink. Professor Kildal also founded Bluetest AB which has a track record of delivering OTA test systems based on reverberation chambers to all major players in the telecom industry. For a full background, see www.Kildal.se.