Please can anyone tell the minimum and maximum antennas can be applied in MIMO and massive MIMO. How do we can move from MIMO to massive MIMO? Is there any specific range of antennas? what are the differences in implementation? Please help in this.
MIMO is between two devices (e.g. base station and mobile station or AP and client), while Massive MIMO is simultaneous communication between a base station and multiple clients. It essentially merges the concept of beamforming with MIMO to minimize interference between devices. Multi-user MIMO (for Wi-Fi) is a similar concept, but not quite as advanced. You can learn more from my recent EuCAP paper:
Conference Paper What’s in a Name? An Analysis of the True Meaning of MIMO an...
https://ieeexplore.ieee.org/document/9135928
https://register.gotowebinar.com/register/6674680299888035595
Sincerely,
Dr. Michael D. Foegelle
Srinu Pyla , MIMO and Massive MIMO are not entirely different concepts. Massive MIMO can be thought of as an extension to normal MIMO where a certain number of antennas are used. Massive MIMO or mMIMO typically requires at least 64 antennas at both the transmitter and receiver end. In this light, you can think of MIMO as something that is a normal MIMO at present which has a fewer number of antennas or less than 64. That's how you move from small MIMO to Massive MIMO. "Massive" makes it big or large enough. In this context, it is the number of antennas that is large. That becomes the center of gravity for the entire concept. Massive MIMO is of course one of the technologies for 5G and beyond. You can gain a lot of advantage from using a large number of antennas. Hope this clarifies.
Signal processing of massive mimo gets simpler by using massive mimo . The no of antennas also much more in comparision with conventional mimo.
Massive MIMO systems can use 128 - 1024 antenna elements in future. Such system can provided additional benefits:
1) effectiveness forming multiple nullings protection against multiple jammers,
2) increasing quantity of abonents of the base station,
3) increasing of distance and radius of cell by using of digital beamforming and coherent summing of signals on the antenna array (on the other hand it give possibility to decrease a power of transmitters on the Base stations or increase a data transfer speed), as example 100 antennas elements give a possibility to increase signal-to-noise ratio on 20 dB;
4) implementation adaptive control of MIMO capacity on basis clasterization of antennas elements to subarrays with different localization and geometry and using different waveforms and wireless standards on such subarrays;
5) implementation wireless communication not only with ground vehicles , but also with multiple UAVs;
6) combine radar and communication system for control multiple UAVs traffic, aquisition of meteo data (speed of wind on the different hight, estimation wind turbulence, rain etc.)
7) may be use the orbital angle moment (OAM) modulation
etc.
For expand your situation awareness you can read my articles (in russian language):
Article Development of circuitry of digital antenna arrays: some res...
http://www.slyusar.kiev.ua/Slyusar_DNVC.pdf
http://www.slyusar.kiev.ua/METEO.pdf (in ukrainian language)
Chapter Marquee type dual-band dielectric resonator antenna for rada...
Signal processing gets simplifed in short. Another way we can tell pilot overhead decreases.
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