In this book mainly we have summarize about the data rate objectives for upcoming 5G technologies will employ a network of innovative multi-antenna massive MIMO (Multiple-Input-Multiple-Output) systems and will utilize more bandwidth at high frequencies, such as 30 GHz in the Ka-band. This groundbreaking implementation requires large-scale array antenna systems with hundreds or thousands of active antenna elements that operate coherently and adaptively. The deployment of numerous elements focuses the transmission and reception of signal energy into increasingly smaller spatial areas.