ฝัง
- เผยแพร่เมื่อ 29 เม.ย. 2019
- Use of the Internet on the go, or when making mobile phone calls, is made possible thanks to the invisible electromagnetic waves that mobile phones emit or receive. However, did you know that this electromagnetic frequency range, or spectrum, is a highly precious resource. In 2008 the US government made a whopping $19 billion through a spectrum auction. In this video we will look at the scientific reasons why this invisible electromagnetic frequency range is such a valuable resource.
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If in a cell or one BTS , multiple users are using 3G technolgies then what happens, any collisions, interference, leakage of data
hey man love these videos -- any way you can add a paypal link also so those of us that don't wanna get another subscription to keep track of can also donate? thanks for your work.
Yes it hurts very much posting online.. urgency is needed. No one is above The Law constitution for all freedom for All..
😂😂😂😂 0:18
😂😂😂😂😂 0:18
People making fun of the video do not see the value in such knowledge, available free for everyone on internet. Hats off to Learn Engineering for the content
totally agree brother!!
Me to also
that delicious easy browny point
Wrong claims is not valuable at all. There is nothing to be learnt from this video.
Yes they do see the value. That's why they watch it.
Whoever did the 3D is the reason why i enjoy all of these videos.
How can I do a video like this? I'm interested because I would like to integrate it to my lessons. I'm a high school teacher.
You think you know a lot, until you realize you have so much more to learn.
Lol, only you think you know a lot
There is a saying what we learnt is a size of 🥜peanut but 🌌Universe is infinite ♾️. Knowledge also infinite ♾️ cannot count like numbers 0000000000123456789000000000000..........no end
@@electron6241 I actually understood that - 100% true
@@hsadanalytics-toptoolsreso6443 what we learnt from Google & TH-cam are 0.01% only.
@@hsadanalytics-toptoolsreso6443 Google also don't has answer for some questions
I will not skip the Ad as a matter of gratitude for the immense value provided through this video. The channel needs to grow. Money in exchange for incredible animation and informative content..... Basic Economy !!
This channel explains concepts like no other!! Grateful to have such content for free.
I really love this channel. I never even thought to wonder about this technological challenge, but the explanation is fascinating.
Great Videos, It's really a treat to see high-quality explanations of engineering topics!
great video!! i love the way this channel talks about the physic behind techniques
sir , you are providing a depth knowledge in a very simple manner , thanks alot for that .
thank you for everything you do. really appreciate the hard work you put into your content
Wow! Amazing
Thank you for making me fall in love with technology even more
OMG look spectrum of this frequency: 1:53 !
Great video!
oh mama
Savage 😂😂
🤣🤣🤣🤣
i lost my connection there
This comment shows us how similar engineers are to teenage boys. That said I came to the comments looking to see if anyone else noticed that..
Discovered your channel yesterday. Great explanation.
This video was better than the course on my university. :D
Nice to see a video that explains what my job helps with on a larger scale. Thanks!
Super useful information. Loved it. Thank you man for making this so clear to understand 🙂
I always watch learn engineering videos in my spare time and it's worth learning through it. Always providing knowledge, Keep It Up, Team!!!!
This topic is great for me .
Thank the creator !
This is great😀! Thanks for the video
Very informative Video.
Thanks a lot !!
Wow what an explanation.love u sir.....
Bt How can People dislike it.
May be they are "out of the world".
this is something new to me. thank you for the knowledge.
Wow glad I discovered this channel very informative thanks
so nicely and precisely explained. thank u for the stuff
شكرا لكم ،أتمنى لكم الخير والتوفيق ، وأتمنى أن يكون هناك المزيد من الفيديوهات عن علم الإتصالات في قناتكم العربية 🖤
What a channel. 100/100 loved it
i have learned more after watching like 5 of of your videos than months of reading books. the graphics and analogies help tremendously
Thank you for the knowledge sir.. The 3D animation is great.
Such an informative video! Thank you!
Thanks bro I really love these types of subjects than a boring poem and grammar's , I really love the way of learning by Looking in real life
Im learning so much tbh. thank u so much for these videos!!!
Explain in such a lucid manner!
"These sub-carriers are mathematically orthogonal to each other and each of them are modulated individually.
We hope this video gives you a clear understanding about what is spectrum."
yep, all clear 🙂
great video. My head is exploding. But I mean it, it's a great video. Thank you
Best example given it really helps a lot
I've been looking for a video that explains this info, but just never knew how to ask it, and glad i found your video!!!!!!!!!! Sorted out a lot of qestions I had
Really awesome! I highly appreciate Learn Engineering.
Engineering milestones described per second is highest of this channel. Adbhut..
This video was very informative, clear and concise. Automatic sub and like!
Perfect illustration.
Excelent video! Thank you!
Thanks to LE for making Telcom more easier to understand.
Thanks a lot guy
This is Great information for me
Great video! Hope to see more in depth videos about this topic. Thanks!
Awesome wealth of Knowledge!
Thank you for such a great video and your dedicated hard work. God bless you.
Great video. This is exactly what I wanted to know. Thanks!
Hats off to Learn Engineering for such a complicated subject made easy to learn. Really.
Had always been curious since childhood on how one phone rings amongst many kept together.
I think I got the clue today. Thanks! 🙏🤗
I worked on LTE software, this video is an accurate description
No, this video is not accurate anymore starting from 3g, even before before LTE. 3g wcdma and 4g LTE greatly improve frequency reuse, so the same frequency can be also assigned to users within different sector if the same cell (3g) or even within same cell sector (4g LTE and MIMO with beamforming)
I am doing my masters in Communication system the concepts here are so insightful
Me and my friend would joke around and call each other's mobiles despite standing next to each other.
We would always hear a high excruciating frequency wave , I was always sceptical on why. Now it makes a lot of sense watching this video.
Why does it happen though
Excellent Demostration !!
Damn.... It's hard to comprehend , just imagine that someone made it before that we understood it.
Nice presentation.
Please, explain details about the multiple access.
Perfect in action of electromagnetic power.
Thank you so much.❤
Very very nice explaination.Thank you sir
Thank you Bro for very imformative contain..
Woah this is sonuseful and well presented
But the ball fountain analogy has a quirk
Smol bols get into large holes
🔥🔥🔥 These fires came while listening 🎧....
Notes
1. The information signal is delivered using EM from cellular data to tower. Every EM waves (analog signal) have it own frequency and amplitude.
2. How the signal reach the accurate receiver?
The frequency signal differs for every users. Mobile phone will only accept the signal where the signal assigned to it. Every signal has it own data frequency.
3. Other fq will be rejected by phone filter circuit.
4. Each devices has it unique frequencies. Or frequency ranges. So each device has it own fq range.
5. Antenna are capable to transmit signal into this frequency range or band.
6. Every device filtering circuit also allows a fq band.
7. Udung frequency modulation. High fq express as 1, low frequency express as 0.
8. Signal sent over the fq are protected by every device encryption. Which mean only your device can decrypt it. Hacker can’t access the information.
9. As the world is wide, EM is limited. Assigning a unique frequency range yo each user in the world is impossible.
Why fq bad is limited and how to overcome.
Notes about EM spectrum.
- EM energy increase while wavelength decreases.
- in order radio wave to Infrared, uv waves and gamma waves.
-higher fq of EM, the worse the penetration capability.
-
Nntilah sambung
Thank you so much @Lesics 💖💖✔
This is like some esoteric magic
Thanks for sharing this information....
Great video. Thank you
in the RYB balls falling in cup example, a smaller ball can still fall into a larger cup
Holy shit. That made things very clear. Thanks
I like the hacker has a mask.😂😂
Pitstu
Thnk U.
I only hear about
2G_Spectrum-'SCAM'
it's very informative 😮👏🏻
Really helpful! Thanks
Could’ve used a more tangible scale for the EM spectral picture, in place or in addition to the solely Hz range.... and another scale describing a relative attribute for the wave form at the top woulda been good also.
Also Dr. Stone is an amazing manga, must read for tech historians
I can't wait for the new season to be released!
Lol weebs
Great , thanks for explaining in very easy , pls come up with more topics
wow! super easy to understand!
Keep going !
Wonderful explaination
1:52 - Good lord! Look at the bazungas on that one.
I found those very educational
oh yeah!
Yeah, a real set of chonkoobas! Some real honkhonkingos! A couple 'a bingzangomadobas! Some serious moobooyahonkomisstobadinglebangleoompaloompahs!
How to create hyperlink with video seek time, like you did for 1:52 ??
@@pradeepkumarreddykondreddy7048 you just did it :p
Great work👍
nice explanation...!!!
1:56, daaaaaamn
To the point!! ❤️
Thankyou!!!👍
OFDM was the saviour for intersignal interferrence and multipath rayleigh profile delay spread, a truly remarkable technique to modulate signals,
I like you guy you're very clear
Very good and informative vodeo. Thankx savin bro.👍☺☺
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هذه أفضل قناه هندسية علي الاطلاق
طريقة عرض بسيطه وشيقه
شكرا لكم من مصر
Bagusnya explanation ni 👍🏻
Hello, what increases or decreases the transmission power? Voltage or amperage?
This is very good
Nice vid but it says nothing about the spectrum of basic waves like a simple sine, square, triangle etc and how a periodic signal is composed of sinusoids (what's the spectrum of it?). Ortogonality, in this case says nothing to many people. Once you included it you really should have said something more about it. Should have been entitled something like 'Frequencies in telecommunication'. But still it's a cool vid though! Keep on making them! :D
You are great
wasn't initially interested in the video (video topic/name didn't seem interesting) but ended up being really cool!
5:11 But is it not a problems that this wave has discontinuities?
Great video
Great video 🙏🙏🙏🙏🙏
It's really high tech...😍
"your government is able to garner a huge revenue..just by being a regulatory body"
Perfect way to end a great video
good video!!!
que video tan chingonsisimo