Massive MIMO is a multi-user MIMO technology where each base station (BS) with a very large number of antenna elements serves a large number of user terminals simultaneously over the same time and frequency band. In this project, we first attempt to verify a performance of under a practical system configuration with a 3D channel model in various radio environments. Toward this ends, we have implemented an system-level simulator for full dimension MIMO subject to the standard 3D channel model. After fully investigating its performance, we will be providing the experimental ground to optimize the feedback scheme while identifying the design constraints for a massive MIMO system. Our ultimate goal will be to explore the technical possibility of achieving the average bandwidth efficiency of 10bps/Hz, as demanded in 5G system, only with the antenna technologies.