CSI based Performance Investigation of Single Cell - Multi user MaMIMO System

In the revolution of wireless communication system multi-user MIMO is one of the proliferation antenna technology in 5G currently being developed to meet the need for high data speed and better service quality for high band applications. This one of theextensive techniques that can support the 5G communication system for advanced multi-antenna system is the Massive MIMO (MaMIMO) technique is that base station with a larger number of antennas A cell with a lesser number of subscribers.This study focuses on fading channels in the system using the OFDM approach.The system overall performance is simulated with distinctive situations of channel state data by the use of pilot training. Linear precoding methods are used to resolve the Multi-User Interference (MUI) at receiver. That knowledge of CSI has an impact on system performance due to channel estimation errors. In the unknown CSI conditions, the Bit error rate (BER) of the system is a bit higher than that of perfect. using a massive range of antennaarray considerably growth the spectral performance without bound, each in best and substandard CSI condition and it's visible that spectral performance also suffers from the channel, in which the LOS channel performance outperforms Rayleigh channel performance.