The beautiful maths which makes 5G faster than 4G, faster than 3G, faster than…

40 thoughts on “The beautiful maths which makes 5G faster than 4G, faster than 3G, faster than…”

• All we need now is the Math that makes mobile phones get a signal indoors.

• wow. so am i really just watching 0 & 1s.

• This was amazing and the comments (as far as I read, which was quite far), also so.

• False. My 5G phone doesn't do anything faster than my 4G phone.

• BS! 5G sucks! It is horrible and is the biggest ripoff in history. The attenuation of 5G makes it only work over short distances, like cities and large metro areas. Any distance from the tower and 5G is useless.

• Brilliant explanation, thanks!

• Oh, good. I came here mostly to look over the comments and see if the anti-5G crazies were here. I don't see any!

• In my opinion, the concept is pretty simple. So, what makes 5G really take a long time to develop?
  Also what's next in 6G? Adding frequency in the QUAM so now instead of 2D grid, we have 3D grid?

• I know that its very tighly regulated which how much of various frequencies you are allowed to emmit. Surely those sharp transitions in the signal are noisy on higher frequencies?

• Wouldn't a phase shift create very high frequencies? Try taking a Fourier transform.

• 0:31 But, the capital G in the id of this video IS important, if it was a lowercase g it would be a whole different id.

• Hugely disappointing that the resulting constellation is a square grid rather than the more efficiently packed triangular grid.

• Minute 4:35. Am I missing something? It appears 45° phase shift has the same amplitude twice?

• Great good fun!

• You're MATHS is Wrong. You Don't Change the Phase and Amplitude AT THE SAME TIME.
  If You did, Then it would be Hard to Decode the Amplitude.
  Quadrature Amplitude Modulation. A Sine and Cosine is combined. The Sine and Cosine can be Decoded as They're Independent.
  If You Look at You're Sine Wave: The Cosine, encodes in the Part of the Sine that Goes Zero.
  The Electromagnetic spectrum is a Shared Spectrum. If You Broadcast a SQUARE Wave, You'd be Broadcasting ON ALL Frequencies. –> So, You Have to be Careful How You Morph/Bend Your Wave. If You Start making things bigger and smaller unpredictably. The Wave would occupy someone else's Frequency. Your Wave, goes through a Filter, that Shapes it Before being broadcast on the Airwaves.

• 16QAM – on a grid, or is it three circles?

• Brillian Video

• Math is already plural.

• There are other dimensions to the technology that would be good to hear about. For example MIMO antennas, dynamic changing of modulation schemes based on how much interference/noise is present (better environment, better throughput), bandwidth size (this is ‘broadband’ after all).

• You should not mix the actual physical world (the signals) with the way they may be depicted and explained. Example: “degrees” are not a physical measurement nor a property; it is a convinient way to describe or depict sine waves. The real physical measurement is “time”, in seconds (or fractions) which relate to the frequency. And yes, using a phase angle does remove frequency from the explanation, and makes it simpler, but this is a depiction, convinient picture, but not a physical reality.

• One sentence makes me curious: do not cross origin. Wonder if the tape recording can be done when the magnetic field does not cross the origin…that way no means no hystesis….?

• Of course I discover this video AFTER I took my Communication Systems final! Excellent video and great, succinct explanations!

• I won't object to you doing this, but I must still point out that 5G NR is an incredibly complex communication system and that is how the incredible speed is achieved. Otherwise qam is used since at least 3G

• The real magic using math is in encoding and decoding COFDM. Thousands of orthogonal carriers each with QAM generated with an IFFT! Just fantastic. See the BBC paper "The how and why of COFDM" by J.H. Stott

• Gee Whizz!

• Thanks. Now I've learned that I don't get it

• 0:37 how did you know?

• I saw something on how the phase gap concept relates to light refraction. Showed mapping for points and measurement / tracking waves/ frequencies. So this is just the same thing about an energy source entering a medium and generating over distance and breaking points for tracking information. You duplicate the same gap enough times and you get the original a mimic of the same frequency. Trying to figure this out with no degree. 8:03

• At 4:39, why do 0110 and 1100 have the same codeword?

• I always thought amplitude modulation is not great since you need a strong signal to noise ratio. Is that why the range is lower than 4G for same emitting power ? I've read about FQAM which is a combination of frequency shift keying and QAM and should be superior in terms of signal to noise ratio and interference compared to QAM alone. Maybe this would be for a next video…

• What's all the fuss about it's only 700 and 800 Mhz, which has Been used for TV broadcasts since the 1960s up 1000 Kw of power.

• very nicely explained. but controlling the analog sine wave to encode more information is difficult as we have to keep track of more information like phase & amplitude and keep it away from electrical noise.

• What about how from 3G to 4G the standard was changed cause the leap was too great so it was lobbied to be decreased and each G-enervation now was lessened originally having suppose to have orders of magnitude more information like from kilobyte to megabyte, each generation suppose to have a standard step of data like this in speed, now not so much after the 3-4G jump was decreased to make that claim

• Its not faster

• 12:39=//₩☆+92#

• Great killing us faster.

• The World with peace, unity, integrity and love,, watching from berbera somaliland rep,,

• What a terrible video

• Thank you for Sign
  Your subject question of fréquences sound and light and Ultraviolet Frequencies
  What impress me is how thé call over Phone
  Séquence of fréquences transmit speech or Light through optical fiber or fréquences through couper change to get Data
  And world of receptors main things developed in physics

• can anyone explain why my 5G is the same speed as my 4G coming from the same transmitter, or is it my provider acting the mick?

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