A typical digital communication system involves several sequential stages, which can be modeled as modular blocks in Simulink:
The Communications Toolbox includes dedicated tools for MIMO modeling. Engineers can model a MIMO fading channel using the comm.MIMOChannel System object in MATLAB or the MIMO Fading Channel block in Simulink. These tools can model fading channel characteristics for MIMO links, using spatial correlation models like the Kronecker model. These models are crucial for designing and simulating massive MIMO, hybrid beamforming, MU-MIMO, and mmWave systems. For example, a 2x2 MIMO-OFDM system with linear channel equalization filters (like Zero-Forcing and MMSE) can be constructed using MATLAB/Simulink, integrating the Communications and 5G Toolboxes.