Best. Explanation. Period.

Here I am, in my first hardware engineering job for digital audio devices, coming back to the same channel that got me through my first signals and systems class as a sophomore in college. Quality translates, folks! Iain rocks!!!

Words are not enough to express how grateful I am to have encountered this channel. Thank you again dear Iain for sharin your knowledge

That's exactly "the best explanation I've ever heard". Thank you sir!

Clear explanation sir. thank you

Watched 2 times and understood it like nothing else. It is the best explanation.

This explain is intuitive and clear. Excellent job.

It's amazing how good your videos are. With just pen and paper you have made me understand so many concepts! Thank you so much for your contribution.

Before watching your video I’ve been reading a lot of blog introducing what is beamforming, but I still cannot understand it. Your illustration is so easy to understand. Thank you Sir!

Solid Gold. Like Einstein said, if you can't explain it simply, you don't understand it enough. What a concise visual representation of the basics of beamforming.

I had so many "aha!" moments during this video that I ended up liking it multiple times, from going to click the "Like" button, forgetting that I had already liked the video just a few minutes before. Great explanation!

I watched many videos on this topic, but only this video made me visualise the beam forming. Thanks for making such a complicated topic so easy :)

Dear Iain, these are all amazing videos. It is really tough to condense such complex material into short videos but maintain understandability of the it. This is really appreciated. You mentioned radar a couple of times. Do you have any plans to make a basic lecture on that? Maybe just simple doppler/ToF/AoA extraction or maybe something on MUSIC algorithm. I have been searching for a while for a decent explanation of MUSIC but it is hard to find one.

I haven't seen a better explanation for this.. hats off sir

I have a master degree in EE, this is the best explanation of beam forming I have seen without all the fancy equations.

One of the best explanations of beam forming ..

Trying to wrap my head around this topic all day, caught your video and boom, mind blown... THANK YOU!

Curiosity can put u anywhere and some places cant be forgotten .This place too💙

The most intuisive explaination that I've ever seen!

I never liked a KZfaq video as much as i like this one. Indeed, it's the best explanation I have ever heard. Thank you so much for your work Prof. I wish I could have a professor like you in my university.

Excellent. The idea of starting with the recieve case is genius!

Thanks Mr. Iain for explaining in such an easy way the Beamforming.

You even make it clear to me. Thanks a lot for ur work.

can't be explained better than this, so clear.

It's just awesome! Didn't know there is a similar beamforming effect in the receiving end as there is in the transmitting side.

So… I created a machine monitoring daq using LabVIEW, mics and NI cRIO’s… about 4 months into monitoring a dyno i intuitively came up with this concept not knowing I stumbled upon beam forming by looking at hundreds of high speed wave form data… Thank you sir for plainly consolidating my mad-ness!

Thank you Iain, For making such a wonderful videos and providing us a valuable knowledge. Can you make a videos on DSP Filters (IIR and FIR Filters)? It will be very helpful.

Thank you Iain. Beam forming is an Amazing principle. So by adding multiple antennas (n Antennas) and injecting a delay circuits and adders we can form those shaped zones and select which receiver to have the best reception from specific direction. I imagine that if we have a programmable delay circuits with algorithm to control those delays and selecting the proper antennas then we can control those beams. Is that what is used in space division multiple access? We maybe able also to have intelligent algorithm that senses the RSSI levels, provide feedback to apply combinations of selecting antennas, adders and delay circuits and eventually automatically select the sending location. I wonder if such a thing already exists?

Best beamforming explanation I have seen.

frankly it is the best explanation

Glad that I’ve found this channel and yeah best explanation I’ve ever heard

awesome explanation, I thought at the begneinggg how hw said best explanation , but he worth the name love the material Mr.Iain

The best explanation I've seen 👏

excellant!such a clear lecture to talk about beamforming. Thx very much

One of the best explanations. Thanks.

A video with basic beamforming techniques for MIMO(or massive MIMO) systems would be helpful.

Best explanation in existence.

Such a simple yet clear explanation, which even hour long fancy videos are unable to provide

Thank you! Professor! You are really good at teaching and educating!

Thank you for the introduction

Best explanation ! Thank you !

Dear Sir your videos are brilliant. Your explanations very clear .Thank you for sharing your knowledge

Wow. That is the best explanation I’ve ever heard. Thank you so much.

Thank you. The best explanation

I know beam forming from acoustic cameras that are using an microphone array to create a picture where you can see the source of noise. This allows to analyze what part of a machine, car, plane and such is emitting what noise. Might be a topic for another video.

Thanku sir...understood perfectly

very nice

Thanks for perfect explanation sir

I just saw your other video! Will watch that now!

phenomenal explanation

sir you're so unbelievably amazing ❤❤. truly thank you

This is really good one 👍

Excellent info. I wanted to understand beamforming microphone this explains a lot!

u explained way better than my professor, thank you sir🥰.

Hi Iain. Thank you for explaining this concept in such a beautiful manner. This video has proved very helpful for me in my first job.

Great explanation! You just picked up another subscriber....

Please upload more video on analog and digital communication, radios,SatCom,latest technologies

You are very gooooood🌷🌷

Great explanation. I expect that by changing the delay one could cause the beam to sweep.

great video, thank you!

Woah, that was incredibly well explained!

Fantastic lecture. Thank you.

I found implicit beamforming on netgear router actually adds a 200- 400 ms of latency. unacceptable.

Good explanation… 😊 thank you

What is never mentioned in antenna radiation is whether or not the E/M loops being radiated do break down into loops of half wavelength as the loop try to grow in size with distance, In waveguides and cavity resonators it is common to show the stacking of " half wavelength E/M blocks to fit in the available space. A one megacycle wave, has a much larger loop than a 5 GigaHertz signal and though everyone talks about lobes, and directivity, and efficiency, and so on, no one talks about the "stacking of E/M blocks" the size of which depends on the frequency of transmission. So for a given frequency , how many stacked E/M loops exist in it as the wave moves out? I have thought about this for the last 80 years and it seems to me that when one has a directional antenna, or a phased array, all that is happening the system is cutting off and eliminating the peripheral blocks in the stack of E/M blocks in the lobe or in any omnidirectional antenna, I simulated this with a computer algorithm which, when the circumference ( wavefront) of the wave grew larger than a wavelength integers, then the " circumference would accommodate another loop half a wavelength long". The simulation works beautifully and the patterns that emerge make it so obvious, after I saw it, From a central location of the antenna, after the wave settles down, the patterns seems to change from a "polar diagram" to a cartesian diagram where the four symmetrical squares of cartesian coordinates, simultaneously move out their four quarters containing the same pattern of E/M loops as exist in rectangular waveguides contain the higher modes. When I plotted the B and the E field loops far from the antenna they came out to be exactly as occurs in rectangular waveguides with the B loops as normal, and the E loops are exactly the same as the E in the waveguide and the surface currents in a waveguide, It is exactly the same pattern, So it seems, that a centrally placed antenna as a source, will have the near E/M fields going through "a pushy transient pattern" then "a middle field pattern" which I call the settling down zone, and then the far field would resemble the pattern obtained in a rectangular waveguide excited with an electric probe or a magnetic probe as one desires. It is fascination to see the four quarters of cartesian coordinates moving out with additional loops being added as the distance increases, It is remarkable, This stacking of E/M blocks, the size of half a wavelength, in a radiating pattern, is interesting, and in a phased array or a directional antenna, it seems that all one does is to " phase out the peripheral E/M blocks and donate the power to the other half wavelength E/M blocks remaining in the " stacked lobe" There seems to be more going on in radiation than one thinks, and this "stacking effect" needs further discussion . An analogy may be used by looking at Chladni's figures in vibrating sheets or a Jelly block, and after all our radiating medium is not much different from a jelly or a rubber block with its "own impedance" in how it permits our signals to "accelerate " build and decay and reverse those the E/M loops the size of half a wavelength. kzfaq.info/get/bejne/rdx6dMqjuqiqZKs.html

Perfect explanation. Thank you Sir!

So when the signal is cancelled out on the incoming transmission.. what happens to it...? Just got a bit confused at this point? How is a beam formed if it's cancelled out? Or... Have I misinterpreted what you have said?

Nice!

This Beamforming, given fixed delay, is good only for fixed (position) signal source and fixed receiver - not for moving source or moving receiver, otherwise it will be hard to tune the delay in a way to match the movement of the source, or receiver. Has this technology "Beamforming" been used for moving source, or receiver, at all in practical application?

amazing video good clear explanation i love u

Thank you Pr. for this helpful video. Could you explain Beamspace in MIMO. Best regards

great video, thanks

Very illustrative and logical thank you 😊

I am trying to understand the MUSIC algorithm. Any link to easily understand it?

Thanks mate for the explanation. Makes sense.

Very useful. Very well explained.

Thanks...just thanks !

6:40 Shouldn't that be 3 time the delay (and not twice) if we want the signal from non-equatorial source?

Thank you very much for the explanation. I have a question. Antennas are fixed on a wireless device. So, the distance between antennas will be the same. How does it work for different frequencies?

Thank you

Thanks for explaination, now I'm wondering how the transceiver actually tunes to specific wireless client by selecting right delays?. Is it still in PHY or MAC layer ? Also how fast is the switching ? As if we have 4x4 router and two typical 2x2 clients how router assures signal from 3rd device will be still handled without comprising value added of two existing MU-MIMO clients?

thank you so much 🙌

Great explanation, Iain

I;m thinking about thos Beams

Beam forming technique is only used into half duplex system?

Couldn't thank you enough❤

Thanks prof

Thks

thanks very much

How far is far enough for considering the wave front to be flat?

Great explanations. Is it possible to visualize near field beamforming (beam focusing) in similar way?

I can understand the basic princple of beamforming form your video, but I have a question. Consider 24Ghz freq MIMO radar system, which has the spatial distace between Rx antenna is lambda/2. To acheive +50 degree digital beamforming, the delay time should be (lambda/2)*sin(50degree)/c = 1.6e-11 sec. So, if I want to make 50 degree beamforming, the minimum sampling rate of MIMO system should be 1.6e11 Hz, which is too high to make a real system. I want to know how can I solve this problem.. Thanks.

Thanks , well explained.

hello, I'm from Brazil and I wanted to know if beamforming also improves latency/ping in online games, thanks

Wow! Wish you were my physics teacher at school. I would've aced the subject.

best explination😊

Thank you so much for the precise and clear explanation on this topic. I would appreciate it if you explain about coodbook based precoder and combiner in mmwave, too. I have faced some troubles understanding this topic.

It's a little bit confusing for me as I thought most of the beamforming is done on the transmitter end while your explanation is mostly from receiver point of view. Would you please elaborate on this?

The distance between the center of two patches should be d or the distance between two adjacent sides of each patch?

great explanation. Now my question is... will this increase a person's exposure to harmful EMF?