I am a retired Army Signal Officer. I wish I had Sunny when I was a Lieutenant! Smart guy, really explains things well. Thank you Sunny!

A lecture who can be a role model for others, God bless you!

Thank you Sunny, you are the best telecommunication professor I have ever seen.

You are simply a master class teacher! smooth , calm and clear ! not a common thing really !

You're the best, Sunny! All of your videos are ever so helpful.

Sunny all of your videos are excellent! Thank you for all your effort and exquisite execution.

You sir, for sure deserve more subscribers and viewers, thank you so much for your work.

Possibly the only good visualization and explanation of this concept on UKposts!

man you are even better then my teachers i learned a lot from you thanks ( you're the man )

out of all videos I pick yours because the way you explain concepts is clean and simple to understand

Good Job Sunny, your video is very helpful, explain with a gentle clearly sound.. make me easy to understand.. GREAT!

You saved my time, amazing video! Thanks!

Thank you for this awesome lecture This guided me to understand this concept and i'm feeling bit more confident to take seminar on this topic after watching this video

Fantastic! Thanks :) The use of more than one example is so helpful :)

excellent job at explaining. Clear and concise.

Excelent job, super clear explanation.

great explanation. I liked how your words were in sync with the animation!

Excellent video lectures . Every concept is covered in a simple and clear manner.Hats off.

No words can describe how much l'm grateful . Gog bless you ❤️

Thank you Sir.You help me out every semester.

Sunny you are a Genius. !!!. Thanks for this clear explanation

Thank u so much! U made the topic easy to understand

Amazing! Thank you Sunny!

You explained it so well, thanks

Nice video to understand concepts!

Good sunny, I really appreciate your smart explanation

you saved me, thank god for sunny

So easy to understand concepts , thanks

SOOO much helpful, Thank you!

Hey Sunny: You didn't mention it but you are actually talking about Barker Codes. I have been looking into Barker Codes and Convolution and this video actually filled in a lot of gaps in my understanding of Barker Codes. I'm not really there yet with Barker Codes, but this video sure helped me get closer. Thanks very much.

I say to myself that I do really enjoy watching your video.

wow, Plain and simple.. thankyou

One more great video. Thank you!!

no doubt ,ur greatest of all

This video are the best! Thank you sir!

Really useful, thanks, that's amazing

Tks so much my man!

Thank you very mich for your great explanation.

Hats off!

Great video. Can you explain how increasing the spreading factor effects the bit error rate ?

best clear & concise explanation sunny....love from india

Good Job man !!!!!

Thanks for this wonderful video. Could you further explain how DSSS makes Inter-Symbol Interference negligible in the multi-path scenario?

I don't see how you could achieve a 10:1 frequency spread at the physical layer using DSSS, whereas with FHSS you can simply have two receivers where one is tuning while the other is receiving. Any comments? A video on the physical layer would be very valuable. Nice channel by the way!

Thank you sir.

Awesome as always Sonny. I wonder can FHSS them be blocked/jammed or interupted? Or is it otherwise the most resilient?

you are brilliant

Best explanation ever, Thank you :-)

Very effective teaching....

This is gold! I do have couple of questions: 1. What is narrowband and wideband? 2. If the bandwidth or the “spread” of a narrowband signal becomes “wider” as shown in the diagram, wouldn’t it cause interference with adjacent frequencies and also become “weaker” to travel far distance? Thank you!

tnks sunny

Good one.

Thanku sir..

thank you

thank

sir which one is most suitable spread spectrum techniques in term of providing security in wireless networking

Thanks thala..

One of the best benefits is you can transmit multiple channels on the same frequency using different codes for each channel. That's how GPS satellites work.

I don't understand why it is likely to have low-power signals. Don't make them more difficult to diferentiate them from awgn noise? Sorry if I missed something actually obvious, I'm beginning to learn about data transmission. Oh, and great video Sunny!

Do you have a more in-depth explanation as to why it is immune to noise?

i have one question. I have seen a solution that converts and transmits a dsss signal in reverse phase. Is there a difference between normal dsss transmission and reverse phase transmission?

Sir What we do in case of Barker 11 sequence provided with an original data of 3 bits

Great explanation. I am curious that when is the PN sequence decided and by whom? I know about shift registers but is it decided before session starts or does it keep changing in the middle of session? Is it multi-casted by transmitter or something else?

hope this helps get me through CISSP...

at 05:40 Sunny says lower power = harder to detect and interfere. But lower power also means that the SNR will be lower so the signal will be more effected by noise=less reliable connection. Can someone please explain that how lower power is better to avoid interference?

how transmitter and receiver sync the PN code to demodulate data ?

So what is better dsss or fhss? And can unrelated this to dsmr as used by spektrum in rc applications?

Always use OR table?

Thank you sir for your video. But as I was taught, when data is modulated with PN code, 1 and 1 is 1, not 0 as your instruction. Correct me if i am wrong. Thank you

keep posting please

which is better ?

Sir, I think in the truth table 1 and 1 using OR Truth table results 1.

Hello there sir first of all this lecture is op and pease make full video if possible with mathematical analysis and the demodulation part thank you

Sunny, you are a great teacher.thanks a lot.

Why is usage of more BW a benefit?

Isn't it supposed to be XNOR and no XOR?

Set 1.25 speed before watching

bhaiyon aur behno is video ko like karo

Looks like a cooking class

🙏🙏🌹🌹

Could U please put the all u wanna say as a text in description?

I always watch this in 2x speed.

I don't get how it's "spreading" frequency of the signal. Based on the explanation, it's only increasing the frequency required to transmit, while still keeping it narrowband.

OR truth table ?? this is XOR

W

নাসকসক

Thats call digital learning ...i hate my education system just blackboard n chalk thing....it sucks

6:08 Sunny, FHSS was developed in 1942 by a Jewish American refugee who became a Hollywood actress. She invented it to help the Allies defeat the Nazis, but the military REJECTED FHSS, and didn't use it until the 1960's. "Frequency-hopping spread spectrum (FHSS) radio technology was originally patented on August 11, 1942, by actress Hedy Kiesler Markey (Hedy Lamarr) and composer George Antheil. It was originally designed to be a radio guidance system for torpedoes, a purpose for which it was never used. The idea of spread spectrum was ahead of its time. During World War II, Lamarr learned that RF-controlled torpedoes of the United Sates Navy, could easily be jammed by the enemy and veered off-course. This made it more difficult to sink the enemy’s ships. So, Hedy Lamarr brilliantly came up with the idea of a frequency-hopping RF guidance system that would be very hard to jam. Together with George Antheil, they created a RF transmitter device that emulated player-piano capabilities… and frequency hopping was born. They filed a patent in 1942, however, the US government immediately classified the technology. FHSS was not used in time for World War II. It was not until 1957 that further development on spread spectrum occurred [at Sylvania Electronics], and in 1962 frequency-hopping (FHSS) was used for the first time between the US ships at the blockade of Cuba during the Cuban Missile Crisis." www.extremenetworks.com/extreme-networks-blog/happy-birthday-hedy-lamarr-wi-fi-visionary

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