What is NOMA in 5G Mobile Communications?

Thanks for your efforts and care

For the second scenario if we allocated more power to the high gain user then this will not achieve fairness bec from the beginning we could have allocated all power to the high gain user all the time I mean in Noma we can not reverse the order for power sharing ?

Other thing how can user of stronger channel gain know the channel of the weak user ? I believe the base station has access to this info but is it practical to convey it to the strong user ?

I appreciate the time and efforts you are trying to put in the videos but your videos make it rather more interesting to find some sources that can can elaborate more could you please share the research papers books lectures that you found interesting let us start for example with the materials used for this video preparation ?

I think it would be better if you multiply the transmitted symbols x times the square root of the power, not the power itself

Hi Iain. Thanks for good explanation of the NOMA concept. I have one question (just to confirm my understanding): shall BTS apply different modulation scheme for different user (etc. QPSK for user with lower channel gain, and 64QAM for user with better channel gain) in order to allow receiver on user side to detect and decode signals from other users?

Sir could you please talk about successive interference cancellation

Your explanation is right to the point and include lots of subtle point. I hope that you could so something about parallel inteference cancellation in NOMA. Thank you !

Pardon me if I sound dumb.. but whats a constellation point? Thank you professor for your nice tutorial.

I have a question in the tdma scenario. We turn on P in the first time slot and then we turn on P in the second time slot. Does that mean the total amount of power in the first and second time slot is 2P.
If yes then this give me a strange impression that tdma use double the power but offer less sum rate then NOMA ?

excellent explanation! Thank you!

good exp

Perfect

in OFDM case, can we implement NOMA
?

can you do about SWIPT Sir? Simultanous wireless information and power transfer?

Could you please explain the uplink scenario?

Thanks for explaining NOMA simply.
NOMA makes sense if compared against TDMA (i.e., shared resources), but can we compare it with SDMA? Defenetly no, because with SDMA the users are separated in space via beamforming, where each user has its own direction relative to the BTS. Thus, we can assign the whole system resources (time and bandwidth for example) to each user in the coverage area simultaneously. So no need for SIC at all, especially if large number of antennas is used (massive MIMO).

What a clear explaination sir! I have one question: What is your opinion about the possibility of NOMA applying in the 5G and beyond systems? In the case where NOMA is combined with antenna techiniques such as massive MIMO.

Great explanation.I have been searching for a video on NOMA since 2017.Thanks

Hi sir, thank you so much for the great explanations. Your video save me a lot of time in studying NOMA in power domain. Do you any videos for explaining about coding domain of NOMA? Some kinds like Sparse Code Multiple Access (SCMA), LDS OFDM, etc. I am really grateful for your videos.

How do we reallocate power efficiently?

I need video explanation about rate split multiple access if you can

Hi professor Iain, thanks for the video. Great great explanations. I am wondering about is there any security issue when y1 performs successive interference cancellations by subtracting the decoded version of h1p2x2 ? Thank you.

Hi sir, thank you so much. It was a great explanations

thank you professor

Perfect!

Thank you sir, what a clear explaination! I did some research and realized that in addition to the power domain, Noma also has a code domain. Hope you make a video to explain more about the code domain.

Thank you for the explanation. Liked and subscribed.
Looking for massive Mimo explanation.

Thanks for the great video. Definitely helped me get insight into NOMA where from research papers I couldn’t get it. One question though: In the equation for y1 where x2 hat is subtracted, how do you know the power p2 magnitude with which to multiply in order for the x2 components to cancel? You say that channel information has to be known at all times and I get there are methods for channel estimation to be used for that. But even then, using the wrong power magnitude would mess up the whole method. So again, how would receiver 1 know p2? I can’t imagine a method to estimate it. If RSSI where it where part of the demodulation process, it would always give the total power from p1 and p2. Only the base station could send the information of how much of a fraction p2 is with regard of it’s total power output in an orthonormal approach.

I have a question: How does user 1 know that he has to change the type of demodulation e.g. from BPSK to decode x2 to 256-PSK to decode x1 after SIC.

hi sir, thank you for the perfect explanation. I have just one question. Can't we use the same constellation for both users in NOMA? for example using BPSK for both?

anyone know what jobs to go for with this research background and a EE degree

Great Video Sir!
Can you please explain RSMA in any upcoming videos??
Thanks

Thanks Lain for the nice explanation. But why do we decode the user with the smaller rate and not the user with the higher SINR regardless of the rate? Or (probably) both the rate and SINR dictate which use to decode first? Am I missing something

u r my guru

Please talk about resource allocation in noma

For now, NOMA is adopted for 5G standard?

Hi Professor, thank you for your lecture, but in some papers, they use the square root of p, I don't know what is the difference.

thankyou so much...this is the most clear explanation..
🙂🙂

Subscribed, thanks to this video!!

Добрый день! Как вы думаете, насчет использование метода NOMA в системах сотовой связи и телевидения? Какой метод может быть общим для систем сотовой связи и телевидения?

Great video. Could you give a lecture talking about tensor algorithms used wireless communication systems?

Can we call NOMA power division multiple access?

Modern tech puts Nyquist and Shannon to shame!

Thank you sir. Great explanation.

Thanks dear Ian, please your kind support to explain the code domain noma, and please is the power domain noma is used in 5gnr