Three Benefits of Using Multiple Antennas in Communications [Video 2]

Thank you so much Prof Emil

Really well done very helpful

Wow sir, excellently explained🌷

Excellent work sir. Kindly start uploading videos regarding CST microwave studio for antenna design..

Very great explanation :)

perfect thanks alot

i like it sir...

Very nice technical video and great presentation. I have one question, let us consider a single tap broadcast channel, the user has one antenna and the BS does not have any knowledge abut the CSI. In this case, if we use one antenna at the BS with isotropic radiation, we could serve the user, however, if we have two antennas at the BS, due to the destructive interference, the probability of serving the user may be lower. So what is the benefit of using two antennas at the BS in this scenario ?

Fantastic Video. I am experimenting on Human Activty classification usign WiFi CSI. [ Spatial diversity and multipath + Denoising+ ML based activity classification]. Want to know if there is a way to tune Transmit antenna same power ? When I try to test my work , one day things work fine. After few days when I set the environment to test (my antenna orienation might not be exactly same) Average power in WiFi signals is totally different [either very high or low or totally different] and that is confusing my Machine Learnign algorithm. Any suggestions on Antenna orientation to make sure same amount of power is generated?

Thank you very much Prof.Emil If we have 10 users in the coverage area of the BS then we can serve them by 10 different beams simultaneously ? How can the beams recognize the users location to focus power to them ?

great video, but during the spatial multiplexing explanation, you talk about multiplexing being used for "multiple users" but i believe multiplexing can also be used instead for a single user (receiver) to increase the data rate for that user.

Thank you for your session : May I know what is meant by multiple antenna here , is it with respect to logical antenna or Physical antenna elements?

Thank you Prof Björnson for this video series. Please, could you explain more this sentence from the video (09:06) "... if outages happen very infrequently, we will also be able to fit very little information into the packets. We need to live with outages in order to get a lot of data through the channels" ? I am not sure to understand why we need to live with outage. Thank you

started looking for long-range wifi routers and end up in this nice video hahha

when using spatial multiplexing for one user on the same frequency how do separate the signals !? no one talks to that do you uses different OFDM carriers ?

Greetings,thank you for this amazing lessons ,i have question if you answer me i will be so thankful to you My question is (how can i determine outage requirement in the system in this lecture you give 10^3 ?)

Just a doubt.. with spatial multiplexing, we can spatially distribute the signals to multiple users. How does that increase the system throughput and what benefit does this give ? I understand system throughput as the no. of data bits transferred per second.

1) @2:57 It is understandable of Options 1 and 2. Transmitted power does not follow superposition theorem actually, only voltage and current do. 2)In the outage probability of M antennas in @10:35, it is assumed that the antennas are independent..so p^M...if the antenna mutually interact, how is it going to change?

hi Mr what does that mean maximum spatial multiplexing gain min(nt,nr)

if we sent an orthogonal waveform associated with each antenna element ,this orthogonal waveform contains information for specific user, and in receiver side doing match filtering. can this be space-time multiplexing provided by MIMO system?