MIMO (Multiple-Input Multiple-Output) is a communication technology that uses multiple antennas at both the transmitter and receiver to improve the performance of wireless communication systems. By utilizing multiple antennas, MIMO systems can increase data throughput, improve signal quality, and boost overall system reliability. MIMO technology is commonly used in various wireless communication standards, such as Wi-Fi, LTE, and 5G, to achieve higher data rates and better coverage in challenging environments. Researchers in this area focus on developing algorithms, protocols, and hardware designs to optimize the performance of MIMO systems in different scenarios. Overall, MIMO is a key technology in modern wireless communications that enables more efficient and reliable data transmission.