@@csp405 What more can you expect from a 7:25 minute video? This gives a broad and brief idea on Analog & Digital Modulation. I found this useful. Thank you Lesics for your work❤️
I am from electronics branch. I share your videos in our group, we got lot of knowledge from you. Thank you and love you from our college. Please also make videos on Microcontrollers like Arduino, raspberry and etc........ Love you
I'm just get started with the SDR and things around. your resources are really helpful for my research. Anyway I just wanted to thank you and suggest you guys to keep up the great work! Thank you so much once again.
This video has been very helpful in visualizing modulation techniques and it's advantages I really don't know how how parents and grandparents used to grasp these concepts without such visual aids. They have to be the OGs though ngl
I just need to say that I was watching this channel before they started using click bait. Now I’m watching it despite the click bait. It’s still a very informative channel.
0:54 Slight note: that's not really why we use modulation. While soundwaves, in the KHz, are too slow to transmit with a reasonable antenna, consider that in cases like TV / WiFi the bandwidth would lead to an acceptable frequency in the MHz anyway, so a small antenna would work just fine for those purposes. Yet, we still modulate. So the explanation given only explains radio, not TV or WiFi. The primary reason we need modulation is because it allows _multiple_ streams of information going over the same medium. Many radio stations, Many TV shows, Many devices connected to the WiFi router, etc, all communicating over the same shared air and of course interfering and mixing with each-other. The idea of modulation, is that despite every WiFi device + TV show + Radio Station using the same air to transmit their waves, you can still "tune" into a specific frequency by filtering the overall received electromagnetic signal _by_ a sine wave of the actual frequency you're trying to "tune" into. (Note that, WiFi, in the GHz, can't get through walls or go long-distance easily. So, each WiFi router can use the same frequencies as long as they're in different homes. When multiple WiFi routers share a space, they still ensure a particular frequency isn't being used before trying to use it. Radio waves, over hundreds of miles, act the same if you've ever gone cross-country driving.)
standard QAM can be viewed on a 2 dimensional graph. there are modulations that use at least 8192 QAM, and you can add more independent properties to QAM like circular polarization, helix, or spin polarization to make a much denser 3 or 4 dimensional data compression/ modulation wireless link. its just not really done yet, too expensive or not developed effectively enough. its easier for people to move to terahertz waves (IR light up through green light usually) to increase capacity instead of make all available use of the existing spectrum. healthier for us that way anyway.
Your videos are very helpful for us.,,, PLz make video about Electrical engineering (classification of motor, Work of generator, 2point 3point and 4point stator, nuclear power plant etc)... Waiting for your reply or videos all the best 😍
lol for your quadrant examples you really need to provide a 3 dimensional graph of your sine wave showing one with the waves propagating vertically along the y axis with the second wave propagating horizontally on the x axis overlapping each other. especially since these are what gets referred to as the G in your 2g 3g 4g etc. 5g I believe gets a little different and was why it needed so much more power when compared to the other speeds. and ALOT more emitters since the wave would not propagate near as far, lol hence the controversy from of lot of people that claim sensitivity to wifi signals. i was in school learning all of this stuff right as 5g was being developed so it wasn't really in any of our courses or books but we did go over it in class a couple times. otherwise great video!!!!!!
Hi I am following you from Egypt and admire your content but there are people who can not speak English can support videos by translating to Arabic Thank you.
💚💚💚💚 bookmark/notes 01:30 icing on the cake ( lathe scraping outer layer metal ) , the metal bucket that tells what making with the molten hot metal inside …..ect….tbc…..-g-b, bot
This is probably like the 3rd time I am seeing someone say that we cannot transmit sounds in their original frequency because the antenna would be too big. It makes me think, wouldn't transmitting it in it's original frequency mean that you're simply amplifying the sound and playing it back on a speaker? Seems to me that transmitting sound through the air, SILENTLY and for a further distance, is the bigger goal of modulation.
Thanks for explanation, yes by 6 Gigahertz it goes faster and QA modulation is better in transfer data. Kind regards, any reaction ? like a command on this subject !
Yo. I think this almost digestible, but not really, needs more examples and a clear explanation, also mentioning the future would be interesting to give a sense of the limits of physics, such as 256 and 1024qam. I think you guys can do better
How is signal added to carrier wave? What exactly occurs in the spot where they are added together? Why does carrier wave change just because because signal is added to it? What device is used to add the carrier wave and the signal wave together? What happens at the other end, how is signal extracted from the composite waves, how is done and by what?
