excellent video series, probably one of the best I have ever seen , clear, imaging based, understandable for an old engineer like me that responds to visuals first and math 2nd.
Thank you so much, I was reading a whole book for many hours, but with this video I just take 5 minutes to ilustrate the ideas very clear and summarize. Hope find more videos of other topics with this didactic , well done!!
Just a simple correction here. The time that you mentioned as the Hop time is the Dwell time. The Hop time is the amount of time needed to move from one frequency to another, which does not exist in your graph.
Whats nice about non-native english speakers is that they speak simple to understand sentences and don't use informal speech. And that actually makes it easier for non-native speakers to understand.
Very well explained. I liked that you videos are short, but at the same time very detailed. You've earned a subscriber. And, please make the future videos shorter too. Thank you.
How a packet once sent by the sender, can hop to different frequency before reaching the receiver? Changing frequency requires energy! So i reckon once a packet is sent it will be in the same frequency. Maybe the next packet will be in different frequency.
A packet is always sent on one frequency, but the next packet will be on another Channel. As you Said, the frequency of an Already sent packet Canon be changed
Thank you Sunny, some of the best explanations on RUclips. It's clear that you spend time and care in making the animations for these videos and it's nice to see the tens of thousands of people who benefit from them.
i think the data packet doesnot jump to another frequency in the middle of transmission,instead i think the user data packets are send in a certain sequence using the various small channels ,and through which channel it will go is already decided before sending
One question: the packages change frequencies or the sender and receiver change the frequency used for each package? I mean, a package sent in F2 will always travel in F2 but the next package will be sent through F5 and so on. Thanks!
because there is a pattern in hopping, and noise or other interference do not have a pattern. When the receiver gets the signals, they can retrieve original signals and get rid of noises.
Why was the 2.4GHz frequency band divided into 79 narrow frequency channels? Why not 83.5 narrow frequency channels since the difference between 2.4Ghz and 2.4835GHz is 83.5MHz where each channel was considered to be 1MHz wide.
But I have one question: How can data transmission signal change its frequency abruptly "during transmission"???? Isn't frequency change done from devices?
There's a mistake in this video. What he is calling hop time is actually dwell time and the time inbetween transmissions is hop time which isn't shown on this graph
Your videos are great as always and your my go to RUclipsr. Having watched some of your videos about Wi-Fi i'm a bit confused now, how do the channels of 1 6 and 11 fit into all of this?
Sir what if two different signals land on the same channel at the same time. For example, signal S1 and another one S2 use the same channel F2 at the same time T3.
My lecturer took two hours to explain this simple thing. Thank you. May u live long
why can't youtube offer degrees?
The most underrated lecturer on the internet! You put things into perspectives that are so easy to grasp, thank you very much!
Plain, simple, and to point.
I respect you, Professor Sunny. ❤️🔥.
The simplest and easy to understand concept of DSSS & FHSS by you on youtube. ♥️
excellent video series, probably one of the best I have ever seen , clear, imaging based, understandable for an old engineer like me that responds to visuals first and math 2nd.
Please Teacher Sunny !!!! Dont stop to make videos . These are really easy and interesting to get them
Thank you for supporting !
This is great, your voice is very clear and concise through the video and the explanation seems obvious 🎉 Just why I need
Great to hear!
Thank you very much for the simplification in such a short and nice video.
You re welcome !
I love your explanations, they are so clear and simple. Great!
Thank you so much, I was reading a whole book for many hours, but with this video I just take 5 minutes to ilustrate the ideas very clear and summarize. Hope find more videos of other topics with this didactic , well done!!
Wonderful!
Just a simple correction here.
The time that you mentioned as the Hop time is the Dwell time.
The Hop time is the amount of time needed to move from one frequency to another, which does not exist in your graph.
I Love It When The Notification Comes, "Someone Has Subscribed Your Channel" 😁 It Always Makes My Day!
Hedy Lamarr sent me here. Amazing invention. 👌
Thank you for watching!
Hello sunny it was a really nice lecture. Short and sweet. Please make a video on ofdm
I will. It is on my to-do-list. I will upload it soon, hopefully.
@@sunnyclassroom24 thanks for your quick response.
No problem. I normally answer within 24 hours unless I travel or business trip.
OFDM - Orthogonal Frequency Division Multiplexing
I do not know if you watched it on my channel.
Simple and straight to the point, thank you!
You put the whole sea in a single glass. That’s magnificent
Thanks a lot, got to know FHSS at superficial level, and did better job than my lecturer.
Whats nice about non-native english speakers is that they speak simple to understand sentences and don't use informal speech. And that actually makes it easier for non-native speakers to understand.
Very good. Your graphics are excellent. Thank you.
Just great! thank you very much for sharing those classes! top!!!
My pleasure!
the best expanations i have ever seen
Great information about the FH.
This is so beautifully explained!
Clear and simple. Thank you!
You're welcome!
Thank you so much for this very simple explanation.
Very well explained. I liked that you videos are short, but at the same time very detailed. You've earned a subscriber. And, please make the future videos shorter too. Thank you.
Thank you ! you made my day!
I wish you had released these videos in my undergrad -_- God bless.
incredible, I learnt so many things
Thank you very much for the simplification
Thank you for your easy explanation, this is really helping me a lot, thank you sir
You are very welcome!
Looks so clear now
Thank youuuu
Thanks for making this clear!
How a packet once sent by the sender, can hop to different frequency before reaching the receiver? Changing frequency requires energy! So i reckon once a packet is sent it will be in the same frequency. Maybe the next packet will be in different frequency.
He means the packet is divided and send partly on the different channels.
@@mortenlund1418 Thank you!
A packet is always sent on one frequency, but the next packet will be on another Channel. As you Said, the frequency of an Already sent packet Canon be changed
Very easily explained 🔥
Thank you again Sunny, love your lectures :)
Thank you Sunny!
Wao very well explained . thank-you soooooo much.
You are very very welcome!
Thank you sunny sir🙏🏻
Thank you Sunny, some of the best explanations on RUclips. It's clear that you spend time and care in making the animations for these videos and it's nice to see the tens of thousands of people who benefit from them.
Wow, thanks! That is my passion to do .
wonderful as always
Btw, nice and short lecture to explain the concept..... good job
It's my pleasure
Very simple explanation.. thank you so much
Excellent explanation..
Clear and simple 👍
Nice one Sunny !!
Thanks a lot.
congrats for your 100k subscriber!
Great video Sunny. Keep it up!
Thank you for watching!
Thank you, that was very helpful!
i think the data packet doesnot jump to another frequency in the middle of transmission,instead i think the user data packets are send in a certain sequence using the various small channels ,and through which channel it will go is already decided before sending
Excellent example - Thanks!
thank you so much. very nice
Thanks to you! I understood it very well :D
Thank You Sir.
You are most welcome
Good video, great teching skills!
nicely explained
Thank you 😃
Very clear, thank you
thanks Sunny, you're awesome
Thanks a lot.
Very clear explanation!
Very well explained, good job and thank you!
Excellent video! I can't thank you enough
Very helpful ...thankyou
My pleasure 😊
This was helpful. Thanks
Nice tutorial
Thank you!
Good Lecture Sir.
One question: the packages change frequencies or the sender and receiver change the frequency used for each package? I mean, a package sent in F2 will always travel in F2 but the next package will be sent through F5 and so on. Thanks!
Another amazing video, thank You!
Very interesting but how does the receiver know the hopping-pattern in FHSS WiFi technology ?
super
well done
Thanks
Thank you for making it easy
Excellent ❤
Nice tutorial, thanks a lot
You are welcome.
very nice, thank you so much sir
very nice sir!
Thanks a lot.
Very well explained..thank you very much!
you are welcome!
Good explanation
better use 1.25 speed while watching
Thank you for supporting!
Thank you sir 🙏
Nice Explanation THANK YOU
I see this is a security benefit, but is it also benefitting regarding interferrence? That I dont see?
because there is a pattern in hopping, and noise or other interference do not have a pattern. When the receiver gets the signals, they can retrieve original signals and get rid of noises.
you are the best!
Very cute lecture
Thanks.
Very clear explanation, subscirbed.
Thank you.....Perfect
Dear Sunny, please upload more video regarding the wireless concepts (i.e CWNA)
Nice video!
Sunny Sir, what if the eavesdropper is listening on all the 79 channels ?
OMG. Liked. Subscribed.
Good lecture 🙌🙌
Why was the 2.4GHz frequency band divided into 79 narrow frequency channels? Why not 83.5 narrow frequency channels since the difference between 2.4Ghz and 2.4835GHz is 83.5MHz where each channel was considered to be 1MHz wide.
But I have one question: How can data transmission signal change its frequency abruptly "during transmission"???? Isn't frequency change done from devices?
There's a mistake in this video. What he is calling hop time is actually dwell time and the time inbetween transmissions is hop time which isn't shown on this graph
So it's relatively secure? Better or the same as DECT 6.0?
Amazing thanks
You are welcome!
Your videos are great as always and your my go to RUclipsr.
Having watched some of your videos about Wi-Fi i'm a bit confused now, how do the channels of 1 6 and 11 fit into all of this?
It is beyond networking basic understanding. I wish I could be able to explain.
great work SUNNY SIR.Make video on INTER SYMBOL INTERFERENCEI,EYE PATTERN ....
I would like to ask how reciever know the changed frequency ? Reciever listen depends on what in this protocol ?
is it used today in our wireless 2.4-5 GHz wireless networks?
Question: How does the receiver know what pattern is used for this transmission? Is it first sent and agreed before transmission?
Both receiver and sender have a predifined hopping sequence not knows by other devices
The wireless version of evasive manoeuvres.
Sir what if two different signals land on the same channel at the same time.
For example, signal S1 and another one S2 use the same channel F2 at the same time T3.
What is the time of hopping in GSM voice signal
Put speed 2x for normal speed