Maliatsos, K. ., P. N. . Vasileiou, and A. G. . Kanatas. “Performance Evaluation of Beamspace MIMO Systems With Channel Estimation in Realistic Environments”. Journal of Cyber Security and Mobility, vol. 2, no. 3-4, July 2014, pp. 265-90, doi:10.13052/jcsm2245-1439.234.