FHSS - Frequency Hopping Spread Spectrum

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Sunny Classroom

Sunny Classroom

5 жыл бұрын

In 802.11 standards, three different modulation/transmission methods are used to transmit wireless signals: 1) Frequency Hopping Spread Spectrum, or FHSS; 2) Direct Sequence Spread Spectrum, or DSSS, and 3) Orthogonal Frequency Division Multiplexing, or OFDM.
These techniques are used for several reasons, including the reduction of natural interference, noise and jamming, and prevention of detection and interception.
In this lesson, I will focus on one of spread spectrum modulation methods used in wireless communications: Frequency-Hopping Spread Spectrum, or FHSS.
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Sunny Classroom

Пікірлер: 177
@sadunkumara3699
@sadunkumara3699 4 жыл бұрын
My lecturer took two hours to explain this simple thing. Thank you. May u live long
@pattty847
@pattty847 2 жыл бұрын
why can't youtube offer degrees?
@oUtLawMaNia
@oUtLawMaNia 3 жыл бұрын
The most underrated lecturer on the internet! You put things into perspectives that are so easy to grasp, thank you very much!
@larryshulman8845
@larryshulman8845 3 жыл бұрын
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.
@20SG20
@20SG20 2 ай бұрын
Plain, simple, and to point. I respect you, Professor Sunny. ❤️‍🔥.
@talismanicac
@talismanicac 2 жыл бұрын
The simplest and easy to understand concept of DSSS & FHSS by you on youtube. ♥️
@silverbell6160
@silverbell6160 3 жыл бұрын
I love your explanations, they are so clear and simple. Great!
@slickrgl
@slickrgl 4 жыл бұрын
Hedy Lamarr sent me here. Amazing invention. 👌
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thank you for watching!
@danielbradley753
@danielbradley753 3 жыл бұрын
This is great, your voice is very clear and concise through the video and the explanation seems obvious 🎉 Just why I need
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
Great to hear!
@NerdyDumbProductions
@NerdyDumbProductions 5 жыл бұрын
Thank you again Sunny, love your lectures :)
@junwenteh
@junwenteh Ай бұрын
Simple and straight to the point, thank you!
@gabodiaz984
@gabodiaz984 3 жыл бұрын
Please Teacher Sunny !!!! Dont stop to make videos . These are really easy and interesting to get them
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
Thank you for supporting !
@TheSkyLegend
@TheSkyLegend 3 жыл бұрын
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.
@RaviKumar-mf8kk
@RaviKumar-mf8kk 4 жыл бұрын
Thank you very much for the simplification in such a short and nice video.
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
You re welcome !
@mariodelzo
@mariodelzo 4 жыл бұрын
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!!
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Wonderful!
@Icefy_2024
@Icefy_2024 2 жыл бұрын
I Love It When The Notification Comes, "Someone Has Subscribed Your Channel" 😁 It Always Makes My Day!
@Anonymous-ed4id
@Anonymous-ed4id Жыл бұрын
This is so beautifully explained!
@JimK0QJC
@JimK0QJC 3 жыл бұрын
Very good. Your graphics are excellent. Thank you.
@fabricegosnet9569
@fabricegosnet9569 4 жыл бұрын
Very well explained, good job and thank you!
@javierlujan9249
@javierlujan9249 5 жыл бұрын
Thank you for your easy explanation, this is really helping me a lot, thank you sir
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are very welcome!
@vighneshnayaks7379
@vighneshnayaks7379 3 жыл бұрын
Thanks a lot, got to know FHSS at superficial level, and did better job than my lecturer.
@jakubadamczewski3477
@jakubadamczewski3477 5 жыл бұрын
Another amazing video, thank You!
@sharvind8852
@sharvind8852 Жыл бұрын
Thank you so much for this very simple explanation.
@flywithtb5005
@flywithtb5005 3 жыл бұрын
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.
@NaqeebAl
@NaqeebAl 4 жыл бұрын
Thank you Sunny, some of the best explanations on KZfaq. 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.
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Wow, thanks! That is my passion to do .
@antoniopintus8568
@antoniopintus8568 3 жыл бұрын
Just great! thank you very much for sharing those classes! top!!!
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
My pleasure!
@RagibShahariar
@RagibShahariar 4 жыл бұрын
I wish you had released these videos in my undergrad -_- God bless.
@fernandoaaff
@fernandoaaff 3 жыл бұрын
Excellent video! I can't thank you enough
@dennisasamoah2213
@dennisasamoah2213 3 жыл бұрын
wonderful as always
@cokeforever
@cokeforever 3 жыл бұрын
Good video, great teching skills!
@aaaaa2332
@aaaaa2332 5 жыл бұрын
Hello sunny it was a really nice lecture. Short and sweet. Please make a video on ofdm
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
I will. It is on my to-do-list. I will upload it soon, hopefully.
@aaaaa2332
@aaaaa2332 5 жыл бұрын
@@sunnyclassroom24 thanks for your quick response.
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
No problem. I normally answer within 24 hours unless I travel or business trip.
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
OFDM - Orthogonal Frequency Division Multiplexing I do not know if you watched it on my channel.
@rvscootin3457
@rvscootin3457 3 жыл бұрын
Excellent example - Thanks!
@stevenshakes978
@stevenshakes978 2 жыл бұрын
Thank you Sunny!
@beTrollakod00
@beTrollakod00 3 жыл бұрын
Clear and simple. Thank you!
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
You're welcome!
@midhunmadhavan7402
@midhunmadhavan7402 4 жыл бұрын
Nice Explanation THANK YOU
@electronicprojecttutorial
@electronicprojecttutorial 4 жыл бұрын
Very clear explanation!
@MrNandu32
@MrNandu32 Жыл бұрын
Great information about the FH.
@rasswanth4968
@rasswanth4968 5 жыл бұрын
Good Lecture Sir.
@isaiah_polocity2516
@isaiah_polocity2516 2 жыл бұрын
Very simple explanation.. thank you so much
@ShikshaThisSide
@ShikshaThisSide 5 жыл бұрын
Wao very well explained . thank-you soooooo much.
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are very very welcome!
@kenjboyd6233
@kenjboyd6233 Жыл бұрын
Thanks for making this clear!
@etcher-lf6972
@etcher-lf6972 2 жыл бұрын
Looks so clear now Thank youuuu
@heritagerunner-mubarakmand1605
@heritagerunner-mubarakmand1605 4 жыл бұрын
Great video Sunny. Keep it up!
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thank you for watching!
@aitbouslamkarima2687
@aitbouslamkarima2687 3 жыл бұрын
Thank you very much for the simplification
@arunbabu7856
@arunbabu7856 2 жыл бұрын
Clear and simple 👍
@Onvervain__
@Onvervain__ 2 жыл бұрын
Very easily explained 🔥
@alicegeorge8757
@alicegeorge8757 Жыл бұрын
Thank you, that was very helpful!
@violinvvv
@violinvvv 3 жыл бұрын
Very clear, thank you
@rasydanghani6995
@rasydanghani6995 5 жыл бұрын
Very well explained..thank you very much!
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
you are welcome!
@7800X3D
@7800X3D 4 жыл бұрын
Thank you for making it easy
@mohammedmuddassir7170
@mohammedmuddassir7170 2 жыл бұрын
Excellent explanation..
@user-mh7vz7xf4w
@user-mh7vz7xf4w 9 ай бұрын
Thanks to you! I understood it very well :D
@AkashMuralidharan
@AkashMuralidharan Жыл бұрын
Thank you sunny sir🙏🏻
@aneupan
@aneupan 4 жыл бұрын
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.
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thank you ! you made my day!
@brunatogomes1627
@brunatogomes1627 3 жыл бұрын
the best expanations i have ever seen
@cenkcaba5757
@cenkcaba5757 2 жыл бұрын
thank you so much. very nice
@aswiniv6428
@aswiniv6428 Жыл бұрын
very nice, thank you so much sir
@rohailmohmand502
@rohailmohmand502 Жыл бұрын
You put the whole sea in a single glass. That’s magnificent
@krishamehta8789
@krishamehta8789 3 жыл бұрын
This was helpful. Thanks
@simi7701
@simi7701 3 жыл бұрын
congrats for your 100k subscriber!
@rohullahhussaini3351
@rohullahhussaini3351 4 жыл бұрын
thanks Sunny, you're awesome
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thanks a lot.
@mdabulkasem2053
@mdabulkasem2053 5 жыл бұрын
Nice tutorial, thanks a lot
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are welcome.
@abhilashbs1021
@abhilashbs1021 5 жыл бұрын
Good lecture 🙌🙌
@mohsenmazandarani7506
@mohsenmazandarani7506 2 жыл бұрын
Thank you.....Perfect
@geekmuralin
@geekmuralin 2 жыл бұрын
Thank you sir 🙏
@arunwuppuluri
@arunwuppuluri 5 жыл бұрын
Nice one Sunny !!
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
Thanks a lot.
@girikgarg1268
@girikgarg1268 2 жыл бұрын
Nice video!
@bingbingsun6304
@bingbingsun6304 3 жыл бұрын
Very clear explanation, subscirbed.
@sarangkottummal5463
@sarangkottummal5463 2 жыл бұрын
you are the best!
@iam_saturn
@iam_saturn 3 жыл бұрын
Very helpful ...thankyou
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
My pleasure 😊
@mayurgare
@mayurgare 3 жыл бұрын
Thank You Sir.
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
You are most welcome
@natsagnyamnamkhai749
@natsagnyamnamkhai749 4 жыл бұрын
super well done
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thanks
@godlessmankind4142
@godlessmankind4142 5 жыл бұрын
Amazing thanks
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are welcome!
@pogo55555
@pogo55555 Ай бұрын
OMG. Liked. Subscribed.
@arjunarvind2178
@arjunarvind2178 3 жыл бұрын
nicely explained
@sunnyclassroom24
@sunnyclassroom24 3 жыл бұрын
Thank you 😃
@tanmoydutta5846
@tanmoydutta5846 4 жыл бұрын
Btw, nice and short lecture to explain the concept..... good job
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
It's my pleasure
@Cyberfako
@Cyberfako 4 жыл бұрын
I would like to ask how reciever know the changed frequency ? Reciever listen depends on what in this protocol ?
@vitojosephjoestar3653
@vitojosephjoestar3653 2 жыл бұрын
you're my hero
@gerardscheffer8848
@gerardscheffer8848 5 жыл бұрын
Very helpfull thnx!
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are welcome.
@user-cm9qb4xy7c
@user-cm9qb4xy7c 5 жыл бұрын
Thnx ...sir...
@tuxuday
@tuxuday 5 жыл бұрын
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.
@mortenlund1418
@mortenlund1418 4 жыл бұрын
He means the packet is divided and send partly on the different channels.
@juanwallace3053
@juanwallace3053 4 жыл бұрын
@@mortenlund1418 Thank you!
@jamesalmaw9256
@jamesalmaw9256 5 жыл бұрын
MY HERO !!
@gaurideshpande1844
@gaurideshpande1844 4 жыл бұрын
very nice sir!
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thanks a lot.
@mattlane1573
@mattlane1573 4 жыл бұрын
Your videos are great as always and your my go to KZfaqr. 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?
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
It is beyond networking basic understanding. I wish I could be able to explain.
@shreyaovalekar6764
@shreyaovalekar6764 5 жыл бұрын
Thank u
@lahirureshanwanniachchi9065
@lahirureshanwanniachchi9065 4 жыл бұрын
Nice tutorial
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
Thank you!
@nilshrestha9147
@nilshrestha9147 2 жыл бұрын
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
@sahitikandukuri340
@sahitikandukuri340 5 жыл бұрын
thank u soo much
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
You are welcome!
@ANALOGTecHII
@ANALOGTecHII 5 жыл бұрын
What is the time of hopping in GSM voice signal
@needsomehike
@needsomehike 4 жыл бұрын
is it used today in our wireless 2.4-5 GHz wireless networks?
@puneetkour9327
@puneetkour9327 5 жыл бұрын
Very cute lecture
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
Thanks.
@gladiamissan84
@gladiamissan84 5 жыл бұрын
Thanks too explicite
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
you are welcome!
@Yasar4ever
@Yasar4ever Жыл бұрын
Dear Sunny, please upload more video regarding the wireless concepts (i.e CWNA)
@burakbbilgin
@burakbbilgin 5 жыл бұрын
perfect.
@sunnyclassroom24
@sunnyclassroom24 5 жыл бұрын
Thanks a lot.
@bhuvaraga
@bhuvaraga 4 жыл бұрын
Question: How does the receiver know what pattern is used for this transmission? Is it first sent and agreed before transmission?
@jeffreydijkstra3391
@jeffreydijkstra3391 3 жыл бұрын
Both receiver and sender have a predifined hopping sequence not knows by other devices
@cheelikumar
@cheelikumar 3 жыл бұрын
great work SUNNY SIR.Make video on INTER SYMBOL INTERFERENCEI,EYE PATTERN ....
@maxheadrom3088
@maxheadrom3088 2 жыл бұрын
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!
@aniketkale449
@aniketkale449 3 жыл бұрын
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.
@sheharanshrestha9382
@sheharanshrestha9382 4 жыл бұрын
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.
@mortenlund1418
@mortenlund1418 4 жыл бұрын
I see this is a security benefit, but is it also benefitting regarding interferrence? That I dont see?
@sunnyclassroom24
@sunnyclassroom24 4 жыл бұрын
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.
@Toto-cm5ux
@Toto-cm5ux Жыл бұрын
Very interesting but how does the receiver know the hopping-pattern in FHSS WiFi technology ?
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