Massive multiple-input-multiple-output (MIMO) systems are considered as an important option for next generation networks such as 5G. Typically, a massive MIMO system deploys a very large number of antennas in network design to attain advantages in spectral efficiency and reliability. The purpose of this idea is to address the direction finding application in a massive antenna array system with reduced hardware and computational complexity using the EM lens antennas. We propose a low complexity based direction finding approach in an electromagnetic (EM) lens assisted massive antenna system. The EM lens provide the advantage of focusing the received signal energy on a small area/subset of...