FHSS - Frequency Hopping Spread Spectrum

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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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Опубликовано:

20 сен 2018

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Комментарии : 176

@sadunkumara3699 4 года назад

My lecturer took two hours to explain this simple thing. Thank you. May u live long

@pattty847 2 года назад

why can't youtube offer degrees?

@oUtLawMaNia 3 года назад

The most underrated lecturer on the internet! You put things into perspectives that are so easy to grasp, thank you very much!

@20SG20 2 месяца назад

Plain, simple, and to point. I respect you, Professor Sunny. ❤️‍🔥.

@larryshulman8845 3 года назад

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.

@talismanicac 2 года назад

The simplest and easy to understand concept of DSSS & FHSS by you on youtube. ♥️

@silverbell6160 3 года назад

I love your explanations, they are so clear and simple. Great!

@junwenteh Месяц назад

Simple and straight to the point, thank you!

@RaviKumar-mf8kk 4 года назад

Thank you very much for the simplification in such a short and nice video.

@sunnyclassroom24 4 года назад

You re welcome !

@NerdyDumbProductions 5 лет назад

Thank you again Sunny, love your lectures :)

@gabodiaz984 3 года назад

Please Teacher Sunny !!!! Dont stop to make videos . These are really easy and interesting to get them

@sunnyclassroom24 3 года назад

Thank you for supporting !

@danielbradley753 3 года назад

This is great, your voice is very clear and concise through the video and the explanation seems obvious 🎉 Just why I need

@sunnyclassroom24 3 года назад

Great to hear!

@Anonymous-ed4id Год назад

This is so beautifully explained!

@MrNandu32 Год назад

Great information about the FH.

@slickrgl 4 года назад

Hedy Lamarr sent me here. Amazing invention. 👌

@sunnyclassroom24 3 года назад

Thank you for watching!

@JimK0QJC 3 года назад

Very good. Your graphics are excellent. Thank you.

@sharvind8852 Год назад

Thank you so much for this very simple explanation.

@stevenshakes978 2 года назад

Thank you Sunny!

@fabricegosnet9569 4 года назад

Very well explained, good job and thank you!

@jakubadamczewski3477 5 лет назад

Another amazing video, thank You!

@etcher-lf6972 2 года назад

Looks so clear now Thank youuuu

@javierlujan9249 5 лет назад

Thank you for your easy explanation, this is really helping me a lot, thank you sir

@sunnyclassroom24 5 лет назад

You are very welcome!

@antoniopintus8568 3 года назад

Just great! thank you very much for sharing those classes! top!!!

@sunnyclassroom24 3 года назад

My pleasure!

@dennisasamoah2213 3 года назад

wonderful as always

@Icefy_2024 2 года назад

I Love It When The Notification Comes, "Someone Has Subscribed Your Channel" 😁 It Always Makes My Day!

@beTrollakod00 3 года назад

Clear and simple. Thank you!

@sunnyclassroom24 3 года назад

You're welcome!

@mariodelzo 4 года назад

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 4 года назад

Wonderful!

@mohammedmuddassir7170 2 года назад

Excellent explanation..

@fernandoaaff 3 года назад

Excellent video! I can't thank you enough

@violinvvv 3 года назад

Very clear, thank you

@cokeforever 3 года назад

Good video, great teching skills!

@rvscootin3457 3 года назад

Excellent example - Thanks!

@alicegeorge8757 Год назад

Thank you, that was very helpful!

@AkashMuralidharan Год назад

Thank you sunny sir🙏🏻

@arunbabu7856 2 года назад

Clear and simple 👍

@vighneshnayaks7379 3 года назад

Thanks a lot, got to know FHSS at superficial level, and did better job than my lecturer.

@isaiah_polocity2516 2 года назад

Very simple explanation.. thank you so much

@Onvervain__ 2 года назад

Very easily explained 🔥

@kenjboyd6233 Год назад

Thanks for making this clear!

@brunatogomes1627 3 года назад

the best expanations i have ever seen

@aitbouslamkarima2687 3 года назад

Thank you very much for the simplification

@electronicprojecttutorial 4 года назад

Very clear explanation!

@user-mh7vz7xf4w 9 месяцев назад

Thanks to you! I understood it very well :D

@midhunmadhavan7402 4 года назад

Nice Explanation THANK YOU

@7800X3D 4 года назад

Thank you for making it easy

@RagibShahariar 3 года назад

I wish you had released these videos in my undergrad -_- God bless.

@heritagerunner-mubarakmand1605 4 года назад

Great video Sunny. Keep it up!

@sunnyclassroom24 4 года назад

Thank you for watching!

@ShikshaThisSide 5 лет назад

Wao very well explained . thank-you soooooo much.

@sunnyclassroom24 5 лет назад

You are very very welcome!

@rasydanghani6995 5 лет назад

Very well explained..thank you very much!

@sunnyclassroom24 5 лет назад

you are welcome!

@cenkcaba5757 2 года назад

thank you so much. very nice

@rasswanth4968 5 лет назад

Good Lecture Sir.

@TheSkyLegend 3 года назад

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.

@aswiniv6428 Год назад

very nice, thank you so much sir

@sarangkottummal5463 2 года назад

you are the best!

@rohailmohmand502 Год назад

You put the whole sea in a single glass. That’s magnificent

@aaaaa2332 5 лет назад

Hello sunny it was a really nice lecture. Short and sweet. Please make a video on ofdm

@sunnyclassroom24 5 лет назад

I will. It is on my to-do-list. I will upload it soon, hopefully.

@aaaaa2332 5 лет назад

@@sunnyclassroom24 thanks for your quick response.

@sunnyclassroom24 5 лет назад

No problem. I normally answer within 24 hours unless I travel or business trip.

@sunnyclassroom24 5 лет назад

OFDM - Orthogonal Frequency Division Multiplexing I do not know if you watched it on my channel.

@girikgarg1268 2 года назад

Nice video!

@rohullahhussaini3351 4 года назад

thanks Sunny, you're awesome

@sunnyclassroom24 4 года назад

Thanks a lot.

@iam_saturn 3 года назад

Very helpful ...thankyou

@sunnyclassroom24 3 года назад

My pleasure 😊

@mohsenmazandarani7506 2 года назад

Thank you.....Perfect

@krishamehta8789 3 года назад

This was helpful. Thanks

@geekmuralin 2 года назад

Thank you sir 🙏

@mayurgare 3 года назад

Thank You Sir.

@sunnyclassroom24 3 года назад

You are most welcome

@mdabulkasem2053 5 лет назад

Nice tutorial, thanks a lot

@sunnyclassroom24 5 лет назад

You are welcome.

@bingbingsun6304 2 года назад

Very clear explanation, subscirbed.

@simi7701 3 года назад

congrats for your 100k subscriber!

@NaqeebAl 4 года назад

Thank you Sunny, some of the best explanations on RU-vid. 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 3 года назад

Wow, thanks! That is my passion to do .

@arunwuppuluri 5 лет назад

Nice one Sunny !!

@sunnyclassroom24 5 лет назад

Thanks a lot.

@arjunarvind2178 3 года назад

nicely explained

@sunnyclassroom24 3 года назад

Thank you 😃

@abhilashbs1021 5 лет назад

Good lecture 🙌🙌

@pogo55555 27 дней назад

OMG. Liked. Subscribed.

@natsagnyamnamkhai749 4 года назад

super well done

@sunnyclassroom24 4 года назад

Thanks

@aneupan 4 года назад

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 4 года назад

Thank you ! you made my day!

@vitojosephjoestar3653 2 года назад

you're my hero

@lahirureshanwanniachchi9065 4 года назад

Nice tutorial

@sunnyclassroom24 4 года назад

Thank you!

@Cyberfako 4 года назад

I would like to ask how reciever know the changed frequency ? Reciever listen depends on what in this protocol ?

@godlessmankind4142 5 лет назад

Amazing thanks

@sunnyclassroom24 5 лет назад

You are welcome!

@flywithtb5005 3 года назад

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.

@ANALOGTecHII 5 лет назад

What is the time of hopping in GSM voice signal

@tuxuday 5 лет назад

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 4 года назад

He means the packet is divided and send partly on the different channels.

@juanwallace3053 4 года назад

@@mortenlund1418 Thank you!

@gerardscheffer8848 5 лет назад

Very helpfull thnx!

@sunnyclassroom24 5 лет назад

You are welcome.

@needsomehike 4 года назад

is it used today in our wireless 2.4-5 GHz wireless networks?

@gaurideshpande1844 4 года назад

very nice sir!

@sunnyclassroom24 4 года назад

Thanks a lot.

@jamesalmaw9256 5 лет назад

MY HERO !!

@tanmoydutta5846 4 года назад

Btw, nice and short lecture to explain the concept..... good job

@sunnyclassroom24 4 года назад

It's my pleasure

@puneetkour9327 5 лет назад

Very cute lecture

@sunnyclassroom24 5 лет назад

Thanks.

@sahitikandukuri340 5 лет назад

thank u soo much

@sunnyclassroom24 5 лет назад

You are welcome!

@user-cm9qb4xy7c 5 лет назад

Thnx ...sir...

@Toto-cm5ux Год назад

Very interesting but how does the receiver know the hopping-pattern in FHSS WiFi technology ?

@shreyaovalekar6764 5 лет назад

Thank u

@maxheadrom3088 2 года назад

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!

@gladiamissan84 5 лет назад

Thanks too explicite

@sunnyclassroom24 5 лет назад

you are welcome!

@nilshrestha9147 2 года назад

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

@bhuvaraga 4 года назад

Question: How does the receiver know what pattern is used for this transmission? Is it first sent and agreed before transmission?

@jeffreydijkstra3391 3 года назад

Both receiver and sender have a predifined hopping sequence not knows by other devices

@Yasar4ever Год назад

Dear Sunny, please upload more video regarding the wireless concepts (i.e CWNA)

@anandprakash9457 Год назад

Sunny Sir, what if the eavesdropper is listening on all the 79 channels ?

@burakbbilgin 5 лет назад

perfect.

@sunnyclassroom24 5 лет назад

Thanks a lot.

@rsstnnr76 Год назад

How does it jump though?

@mattlane1573 4 года назад

Your videos are great as always and your my go to RU-vidr. 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 4 года назад

It is beyond networking basic understanding. I wish I could be able to explain.

@cheelikumar 3 года назад

great work SUNNY SIR.Make video on INTER SYMBOL INTERFERENCEI,EYE PATTERN ....

@aniketkale449 3 года назад

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.