Orthogonal Frequency Division Multiplexing - OFDM | Wireless Communication [English]

Welcome to GURUKULA!!!
This video explains the concepts of Orthogonal Frequency Division Multiplexing (OFDM)
You will learn following from this video:
Introduction to Orthogonal Frequency Division Multiplexing,
Approach for OFDM,
Concepts of Subcarriers, and Cyclic Prefix,
Transmitter and Receiver of OFDM Signals,
Properties of Cyclic Prefix,
Linear Convolution to Circular Convolution Conversion Proof,
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Keep Supporting, Keep Sharing.... Happy Learning....

[@akshayadore9276]

I searched in internet for a good explanation on ofdma. Nowhere i found except here. Thanks for the video.

[@GURUKULA]

Thank you..

[@zakirullah4088]

No one can be compared with your this presentation. Thanks for your hardwork

[@GURUKULA]

Thank you .

[@yuganderu5645]

Hare Krishna !! This is the BEST !! 🙏🏼🙏🏼🙏🏼🙇🏼‍♂️🙇🏼‍♂️🙇🏼‍♂️

[@GURUKULA]

thanks a lot. we wish you a happy learning at @gurukula. it would be great help if you share our videos with your friends and a subscription as a sign of motivation..

[@SusheelaRPatagar]

Good explanation. Thank you sir.💛

[@charalambosmaxoutis1488]

Thank you. Made things clear

[@GURUKULA]

Thank you, i am glad that it helped you, there are much more useful videos in the channel.. please have some time to check out those videos as well. we wish you a happy learning at @GURUKULA

[@tapassaha8855]

Explanations are very good sir. Thank you for this nice lecture.

[@GURUKULA]

Thank you.. glad that it helped you.. share with your friends so that.. they will also get benefitted..

[@herveiradukunda4447]

Thank you for videos. They are useful.

[@GURUKULA]

Welcome... Happy learning

[@anumuladinesh1562]

You are the best sir

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Thank you, we wish you a happy learning at GURUKULA

[@mjeevitha3134]

Really superb

[@GURUKULA]

Thank you

[@simplemathematics7792]

Very fine lecture.

[@GURUKULA]

Many thanks

[@yourbestie4138]

great explanation sir

[@GURUKULA]

Thank you... Wishing you a happy learning at GURUKULA..

[@yomexify]

Am happy to come across your tutorial, it is explanatory. Pls I want to use the topic for my MSc. How can I implement it on MATLAB or other means you have ideas on.
Thanks sir.

[@maturiharikrishna365]

Excellent teaching

[@GURUKULA]

Thank you.. we wish you a happy learning at GURUKULA...

[@abhishekkarwa3674]

Good one

[@GURUKULA]

Thanks

[@amitkhanjansarma7559]

sir can you give notes... by the way thank you so much sir for such a wonderful lesson

[@divyajain4578]

Very useful sir, can you please expalin ufmc.

[@arathi4086]

Sir, is ifft responsible for the introduction of cyclic prefix to the signal...? Then why we want to use another block called addition of cyclic prefix?

[@rishabhsrivastava1241]

Ifft does not include CP on its own. You have to deliberately add CP at the end of your sample that leads to circular convolution property that inherently leads to parallelizing the channel coeffs in Freq domain

[@vishwanathhosmane3834]

Sir plz also upload videos on Zero forcing and LMS Algorithms , RAKE Receiver , Maximum Ratio Combining , Equalization and Diversity , working principle of adaptive equalizer , MIMO systems , spatial multiplexing , Channel State Information , Beamforming , etc. soon. After some days I have exam.

[@jyotipoly]

Please give some realistic example for OFDMA.....i.e. what will be sequence of action to transmit HELLO to any user

[@dheerajmaske1194]

Thankyou,Insem sorted :)

[@GURUKULA]

You're welcome!

[@shachitripathi1313]

very good explaination. thank you

[@GURUKULA]

Glad that it helped you.. we wish you a happy learning at GURUKULA 🌳

[@GURUKULA]

Glad that it helped you.. we wish you a happy learning at GURUKULA 🌳

[@christsomiah7825]

Can we have a video on Non-orthogonal Division Multiple access Technique

[@RajnishKumar-dq4ni]

Great work sir

[@GURUKULA]

Thank you.. we wish you a happy learning at GURUKULA

[@songshub7931]

thats awsome explaination..can u also provide matlab code for block diagram of ofdm??

[@Rajivirat]

Excellent ✌️🙏🏻

[@GURUKULA]

Thank you we wish you a happy learning at GURUKULA..

[@neerajpremadhuri5636]

Best👌👌

[@prudhviraj_k]

Thank you so much sirr..

[@GURUKULA]

You are most welcome, we wish you a happy learning at GURUKULA. There are much more useful videos in the playlists. please check out those videos aswell..

[@prudhviraj_k]

@@GURUKULA sure I do thank you ..

[@neeharika3433]

Can u explain topics like linear and non linear equalization,,macro and micro diverstity sir

[@psujith9300]

In case of multiple carrier, the total symbol time comes out to be 102us where as in case of single carrier is 3us.
Isn't it a disadvantage

[@rishabhsrivastava1241]

No it's not, generally we want the symbol time to be larger than the delay spread of the channel. So longer symbols are more resistant to inter symbol interference due to delay spread compared to smaller symbol duration. Also, keep in mind that there is a tradeoff of using smaller sub carriers in Freq domain which is stretching of symbols in time domain

[@225_pranaygoud4]

Sir I have a doubt
Multiplication with carrier is done before or after ifft

[@rishabhsrivastava1241]

If you mean carrier Freq, it is done after addition of cyclic prefix.

[@allenabishek65]

in 19 min part of the video, i can see you are converting information from frequency domain to time domain and sending it over the medium? for fdm shouldnt the information be in freq domain before it gets multiplexed and sent to travel ?

[@darshanmanjunathraochawan2635]

It is freq domain but it will be continuous-time signal not the discrete

[@darshanmanjunathraochawan2635]

subcarriers do overlap 9:30 when you see in the figure, how come u say non-overlapping? can you please explain it..

[@rishabhsrivastava1241]

Overlapping only happens when peak of one sub carrier interferes with peak of another, please check the figure again, never does the peak of one sub carrier overlaps with peak of another.

[@rishabhsrivastava1241]

Delay spread explanation was a bit flawed. We have to understand that delay spread is channel's property to spread the symbol. That means if symbol duration is smaller than dealy spread then chances of that symbol overlapping with another symbol is very high, so symbol time must be greater than delay spread. Efficiency angle was not what we look for as interviewers please note.

[@naan9910]

Sir cover topic like GSM GPRS wimax CDMA tdma fdma ... related to competitive exam

[@GURUKULA]

Sure.. i will take it into consideration..

[@varshad5676]

symbol period for second case is 10 millisecond....to be 100 microsecond it has to 100 MHz

[@learning2009]

terific i will write tomorrow test

[@GURUKULA]

Good luck... We wish you a happy learning at GURUKULA...

[@rameshmalhotra9525]

6:55

[@rameshmalhotra9525]

16:00

[@normalgaming006]

Hello sir please talk me on insta some urgent for study

[@vishwanathhosmane3834]

Sir plz also upload videos on Zero forcing and LMS Algorithms , RAKE Receiver , Maximum Ratio Combining , Equalization and Diversity , working principle of adaptive equalizer , MIMO systems , spatial multiplexing , Channel State Information , Beamforming , etc. soon. After some days I have exam.