Is my understanding correct please help. If we decide that two signal should experience same channel condition then we assign same antenna port to those signals.
Hi...Thank you for sharing this...My Query is: 1. In case of SS/PBCH block, we have L=8 for sub 6GHz band i.e total 8 blocks will be transmitted. For this, we are generating 8 SS block. So, there we will have one antenna port or many....if one antenna port than how mapping will be done to form 8 different beams? 2. Also, After layer mapping, we have an antenna port that will give us a separate resource grid of each layer...So, how these all resource grid come together (Like 8 SS block beams on 8 different grids)...Please confirm ....I hope I have conveyed my query properly. Thanks!!
1. Different SSB blocks are transmitted over different beams known as SS Burst Set which leads to SSB Beam Sweeping You can watch lecture 7 for more details ruclips.net/video/EMG-xuMnna0/видео.html 2. If I understood your question, then the answer is layer demapping at the receiver side
I think the SSB beams are separated in time...So, they can be transmitted from the same port but at différent time.. Did not understand your question about layer mapping
Thank you. One question, maybe I missed it: in case 1, as you say, one antenna port map to one physical antenna, (red) and the other antenna port to the blue. But the figure describes 4 physical antennas (blue) and four red. Do you mean that antenna port e.g., 1000 will be sent by all the blue ones? Thank you.
Actually No, those are for representation purpose only. If the mapping is one to one, that means a specific antenna port is mapped only to a single physical antenna.
Hello Sir, It is not easy to understand the abstract nature of antenna ports & QCL. It would be more helpful if you could share mathematical expresisons for antenna ports. A simple scenario 2x2 would be fine. If not, pls share any references of the same. thanks
you show think about a standard MIMO system, like Y=HX, where H is a 2*2 channel matrix, refer any standard book for this type of understanding. This has been touched to some extent in another video: ruclips.net/video/TmOYOr_N4Uk/видео.html
5G NR Coverage is dependent on SSS EPRE which determines EIRP and Required RSRP at the cell edge.SSS EPRE is based on single antenna port. Question: PDSCH EPRE would it be same as SSS EPRE or would it have any offsets...Or they are another parameters used for Channel estimation….how to calculate EPRE for SINR CALCULATION
Layer is a concept used for dividing a codeword into multiple segments which are then precoded and sent over multiple antenna ports. While beams are actually the output of a physical antenna which carries the actual signal over EVM waves.
Is my understanding correct please help. If we decide that two signal should experience same channel condition then we assign same antenna port to those signals.
Hi...Thank you for sharing this...My Query is:
1. In case of SS/PBCH block, we have L=8 for sub 6GHz band i.e total 8 blocks will be transmitted. For this, we are generating 8 SS block. So, there we will have one antenna port or many....if one antenna port than how mapping will be done to form 8 different beams?
2. Also, After layer mapping, we have an antenna port that will give us a separate resource grid of each layer...So, how these all resource grid come together (Like 8 SS block beams on 8 different grids)...Please confirm ....I hope I have conveyed my query properly.
Thanks!!
1. Different SSB blocks are transmitted over different beams known as SS Burst Set which leads to SSB Beam Sweeping
You can watch lecture 7 for more details ruclips.net/video/EMG-xuMnna0/видео.html
2. If I understood your question, then the answer is layer demapping at the receiver side
I think the SSB beams are separated in time...So, they can be transmitted from the same port but at différent time..
Did not understand your question about layer mapping
Is this antenna port concept same as that in LTE?
Thank you. One question, maybe I missed it: in case 1, as you say, one antenna port map to one physical antenna, (red) and the other antenna port to the blue. But the figure describes 4 physical antennas (blue) and four red. Do you mean that antenna port e.g., 1000 will be sent by all the blue ones? Thank you.
Actually No, those are for representation purpose only. If the mapping is one to one, that means a specific antenna port is mapped only to a single physical antenna.
Hello please could you put a tutorial on TM in 5G and used TM in mMIMO
Thanks. Can you also explain about MIMO specific to 5G NR?
As usual this video is clear and give the fundamental to explore more the difficult concept
What happen when pucch received with antenna port other than 2000 range
Good Explanation bro...Thanks!!
Thanks
Hello Sir,
It is not easy to understand the abstract nature of antenna ports & QCL.
It would be more helpful if you could share mathematical expresisons for antenna ports. A simple scenario 2x2 would be fine.
If not, pls share any references of the same.
thanks
you show think about a standard MIMO system, like Y=HX, where H is a 2*2 channel matrix, refer any standard book for this type of understanding. This has been touched to some extent in another video: ruclips.net/video/TmOYOr_N4Uk/видео.html
5G NR Coverage is dependent on SSS EPRE which determines EIRP and Required RSRP at the cell edge.SSS EPRE is based on single antenna port.
Question: PDSCH EPRE would it be same as SSS EPRE or would it have any offsets...Or they are another parameters used for Channel estimation….how to calculate EPRE for SINR CALCULATION
What is epre
very good lecture, thanks!
Well explained - thanks
What is the difference between layers and beams?
Layer is a concept used for dividing a codeword into multiple segments which are then precoded and sent over multiple antenna ports. While beams are actually the output of a physical antenna which carries the actual signal over EVM waves.
So good, thanks alot
Thank you