Μελέτη συστημάτων Massive MIMO
The purpose of this dissertation is to study and evaluate the performance of a MU-MIMO system, in order to identify the advantages that this groundbreaking technology can offer. This dissertation presents a Monte Carlo simulation, that generates a random channel matrix for both uplink and downlink of a MU-MIMO system.The receivers used for this simulation were MRC/MRT .The modulation scheme for downlink is OFDM, and for uplink SC-FDMA. Pilot signals are simulated as Zadoff Chu orthogonal sequences. This simulation uses the optial values for the power, the number of users and the number of of pilot symbols, based on the given whole numbers for the base station antennas and the cohorence interval .Besides guard intervla and channel estimation techniche, the rest system takes in account LTE standards. For the simulation implementation, MATALB R2013a was used.