Greetings, despite MIMO and array fall under the umbrella of multi antenna system, what are the features that distinct one from the other. At the same time, what factors makes one to be far superior to the other.....
Array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive, While MIMO antenna works as multiple set of individual antenna. MIMO uses multiple antennas to handle multiple signal paths simultaneously.
MIMO involves the use of multiple antennas at both the transmitter and receiver ends to exploit the spatial diversity and multipath propagation characteristics of the wireless channel.
An antenna array definition is; a group of antennas that are arranged to form a single antenna to generate radiation patterns but not generated by individual antennas.
More-
1. https://www.elprocus.com/antenna-array/
2. https://www.waveform.com/a/b/guides/mimo-antenna-guide
Both, MIMOs and antenna arrays use multiple antennas but for different purposes. MIMOs use multiple antennas to increase the transmission data rate and each element antenna is usually fed from its own port and transmits different data stream. On the other hand, an antenna aray is fed from one common port and each element in the array is used to send the same data stream as other elements but with differen power and phase. Antenna arrays are intended to improve the overall gain and directivity. Overall, elements of a MIMO are isolated from each other while elements of an antenna array interact with each other in some way to produce one beam.
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