4G & 5G Multi User MIMO Overview(Theory & Practical)

[@fadiiii2024]

Nice ya abo 3adwy

[@muhammadfarrasarchi]

Nice, good job… Can i ask a question, you told in the video : Quick hits section, the MU-MIMO is typically associated with the lower rank MIMO (2x2 MIMO). But why in the next, you told 4G and 5G support using until 64T64R. Can you explain it? Is the lower rank not corresponding directly to number of antenna?

[@mohamedeladawiashour]

Thank you, Muhammad. Certainly, feel free to ask anytime. You're correct; the maximum supported rank is directly correlated with the number of TX/RX antennas on both the UE and BTS sides. For instance, if the BTS transmits with 4T and the UE receives with only 2R, the maximum supported rank in this scenario is 2. In the case of 64T64R from the BTS side, the maximum supported rank in either DL or UL will still be constrained by the maximum supported TXRX on the side (UE). However, there is a nuanced difference in the statement mentioning MU-MIMO. MU-MIMO is typically associated with lower-rank MIMO (e.g., 2x2 MIMO). In the case of Multi-User MIMO (MU-MIMO), even if we assume that the maximum supported rank is 4, the gNB/eNB may downgrade the maximum rank to 1 or 2 to maximize the benefits of Multi-User MIMO. Nevertheless, this is a vendor-specific solution, implying that UEs can still support rank 4, but it involves a tradeoff in MU-MIMO performance.

[@mohamedeladawiashour]

If not clear let me know and you can text me on linkedin to discuss further if needed. thanks

[@3zz79]

Amazing work 👏🏼

[@zakerria]

Ur brilliant my friend!

[@mohamedeladawiashour]

Thanks a lot my friend

[@Umer_Aftab]

What a wonderful lecture. Thanks Edawi.

[@mohamedeladawiashour]

Thanks a lot, Umer

[@Umer_Aftab]

@@mohamedeladawiashour Welcome !

[@DataRipples]

Excellent insight

[@MohamedAli-d8m]

Fantastic way to learn 👌

[@VipinKumar-dv7hy]

Verry good...please make one video On detailed port number in mumimo in 5g

[@mohamedeladawiashour]

Hi Vipin, Thanks a lot, Please explain more about what you need about the port number in 5G MU-MIMO, and I will prepare the requirements based on this. Meanwhile, the below video covers some information regarding the dmrs ports number and requirements in the case of MU-MIMO. kzbin.info/www/bejne/oIvYoqFujaiHd8U

[@VipinKumar-dv7hy]

@@mohamedeladawiashour thanks...I am here at KZbin since longer time but I would say your material is awesom. With..deep details thanks for your efforts and knowledge

[@mohamedeladawiashour]

I really appreciate this feedback, thanks a lot Vipin for your kind words.

[@aymanadel1527]

Great work 👍👍

[@edijaya6032]

hopefully useful and a field of knowledge for us

[@mohamedeladawiashour]

Thank you, Will do the best to make it useful

[@VipinKumar-dv7hy]

Thanks !One query what are differences at signalling level..in sumimo and sumimo??? Can you please elaborate on this ..any signalling diff in sumimo n mumimo..( in rrc reconfigure msg)

[@mohamedeladawiashour]

Hi Vipin; as i know and understand; you can mot see MU-MIMo from any signaling; the full control is at eNb side and there is no information need to be shared with the UE; when i did the test before for MuMimo i was only able to confirm this from throughput gain from field and checking related MU mimo counters from KPis

[@VipinKumar-dv7hy]

Thanks@@mohamedeladawiashour yes I was observing same . Also if mumimo is with massive mimo i.e 32 trx massive mumimo then do we need any signalling i.e need to do anything set for 32 trx at signalling?

[@khairulghino4448]

Amazing work❤

[@mohamedbelal4545]

Great Effort 👏👏 please keep it up 💗

[@arfanday]

Apik

[@khaledshetewy1]

👍👍👍👍

[@randikenzo1299]

👍👍👍👍

[@MohamedSedeek-k1d]

👍👍👍

[@ahmedashour9254]

👍👍👍