MIMO stands for multiple-input/multiple-output. It has become an essential technology in WLAN, LTE, 5G communications, and other wireless systems. This technology can increase channel throughput, spectral efficiency, and robustness to fading and interference. Compared with a single transceiver pair (SISO), the use of MIMO can substantially increase the link capacity of WLAN, LTE, and 5G systems.
The MIMO technology provides different link performance enhancement schemes, including diversity processing, spatial multiplexing, and antenna beamforming. A MIMO system is made of the following key elements: antenna array, multichannel RF transmitter and receiver, ADC/DAC, and high-speed baseband signal processing blocks.
MATLAB® and Simulink® provide tools to model complete end-to-end MIMO communication links for overall link performance simulation or the study of a specific part of the links. Furthermore, with these MIMO functionalities, you can also investigate the problems associated with the massive MIMO systems for 5G, such as computational complexity, pilot signal interfering effects, mutual coupling effects, channel delay, and array calibration issues.