What is MIMO?

MrGEEK — Fri, 10 Apr 2020 14:17:20 GMT

Hey members,

Hope you are safe and doing great at home.

Today I am gonna talk about MIMO(Multiple Input Multiple Output). So what is MIMO?

Multiple-Input Multiple-Output (MIMO) is a wireless technology that uses multiple transmitters and receivers to transfer more data at the same time. All wireless products with 802.11n support MIMO. The technology helps allow 802.11n to reach higher speeds than products without 802.11n.

To implement MIMO, the station (mobile device) or the access point (AP) must support MIMO. For optimal performance and range, both the station and the AP must support MIMO.

MIMO technology uses a natural radio-wave phenomenon called multipath. With multipath, transmitted information bounces off walls, ceilings, and other objects, reaching the receiving antenna multiple times at different angles and slightly different times. In the past, multipath caused interference and slowed down wireless signals. With multipath, MIMO technology uses multiple, smart transmitters and receivers with an added spatial dimension, increasing performance and range.

MIMO increases receiver signal-capturing power by enabling antennas to combine data streams arriving from different paths and at different times. Smart antennas use spatial diversity technology, which puts surplus antennas to good use. When antennas outnumber spatial streams, the antennas can add receiver diversity and increase range.

More antennas usually equate to higher speeds. A wireless adapter with three antennas can have a speed of 600 Mbps. An adapter with two antennas has a speed of 300 Mbps. The router needs multiple antennas and must fully support all features of 802.11n to attain the highest speed possible.

The antennas at each end of the communications circuit are combined to minimize errors and optimize data speed. MIMO is one of several forms of smart antenna technology, the others being (multiple input, single output) and SIMO (single input, multiple output).

In conventional wireless communications, a single antenna is used at the source, and another single antenna is used at the destination. In some cases, this gives rise to problems with multipath effects. When an electromagnetic field (EM field) is met with obstructions such as hills, canyons, buildings, and utility wires, the wavefronts are scattered, and thus they take many paths to reach the destination.

The late arrival of scattered portions of the signal causes problems such as fading, cut-out (cliff effect), and intermittent reception (picket fencing).

In digital communications systems such as wireless Internet, it can cause a reduction in data speed and an increase in the number of errors.

The use of two or more antennas, along with the transmission of multiple signals (one for each antenna) at the source and the destination, eliminates the trouble caused by multipath wave propagation, and can even take advantage of this effect.

MIMO technology has aroused interest because of its possible applications in digital television (DTV), wireless local area networks (WLANs), metropolitan area networks (MANs), and mobile communications

Hope you now understand what is MIMO.

Peace✌️☮️.

Re: What is MIMO?

immi007 — Fri, 10 Apr 2020 14:27:31 GMT

nice and informative post bro

Re: What is MIMO?

NaveedKazi8888 — Sat, 11 Apr 2020 12:16:08 GMT

Good information regarding MIMO

Re: Re: What is MIMO?

MrGEEK — Sun, 12 Apr 2020 14:29:39 GMT

thanks bro

Re: Re: What is MIMO?

MrGEEK — Sun, 12 Apr 2020 14:29:44 GMT

thanks

Re: What is MIMO?

SurinderK — Sun, 12 Apr 2020 15:32:37 GMT

Very well explained 👌

Re: Re: What is MIMO?

MrGEEK — Sun, 12 Apr 2020 15:40:51 GMT

thanks

Re: What is MIMO?

Ashish658 — Mon, 13 Apr 2020 07:55:53 GMT

Well described 👍👍

Re: Re: What is MIMO?

MrGEEK — Mon, 13 Apr 2020 13:34:11 GMT

thanks!!

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