short and simple, you explained the motivation behind the small cells. For a researcher like me, who is a little unfamiliar with RAN, and focused on CN, it was a great intro!
There is a wired connection through the stripe, and it is connected on one side to a computer that carries out the signal processing. Here is a video that digs deeper into this topic: ua-cam.com/video/uULZ2kT9jDA/v-deo.html
Here is a video where I explain the concept in more detail: Reinventing the Wireless Network Architecture Towards 6G: Cell-free Massive MIMO and Radio Stripes ua-cam.com/video/ZepQAw21HfA/v-deo.html
Thanks for sharing your insight. I have been studying your research on CF, Near Field comms, RIS, etc. Both cell-free and near-field communications have benefits of their own. In Cell-free, APs typically have fewer antennas than conventional gNBs used in today's 5G systems. In near field in order to work in the near field propagating regime, we need thousands of antennas to have a wide area. Near field has the magical finite depth beamforming. Do you think it is possible to have them both in a wireless system? I mean instead of using ELAAs, we use a cell-free architecture with a small number of antennas on each antenna, and still being able to make near field comms and finite depth beamforming possible? Thank you
These are good points that you are making. An ELAA doesn’t have to be a conventional array with half-wavelength spacing but the antennas can be distributed over a larger area to exploit near-field properties, such as finite-depth beamforming. Usually, this has been described like having antennas distributed over a wall, but a cell-free system with arbitrary deployments is also a kind of ELAA. I think the cell-free architecture with centralized processing is the best choice in terms of performance, but a co-located deployment on the facade of a building might be more economical for a telecom operator.
and yet all of this is a dead end. instead of simulating a narrow beam with transverse em why not utilize a non transverse mode where narrow beam is a natural outcome? duuuh..... why insist on stubborn stupid?
The cell-free/distributed MIMO technology isn’t relying on a particular kind of antennas or EM modes. It is about combatting pathloss by having dense deployments and control interference through distributed beamforming, using whatever kind of antennas available.
@@WirelessFuture you just totally missed the point. Path loss as square of the distance is a property of transverse em. the most lossy propagation mode possible. Why do you insist on continuing with the same and ignore non transverse near lossless modes?
@@paulmitchell4421 You keep making strawman arguments by making up assumptions that are not essential to this technology. Yes, one can achieve near lossless transmission in waveguides but there will be a distance-dependent pathloss in free-space propagation. If you disagree, I'll be happy to see the scientific evidence for your standpoint.
@@WirelessFuture your technology is garbage, good sir. modern technology utilizes superluminal, counterspacial and near lossles communications based on magnetodielectrics (complementary conjugate of electromagnetics) as described by Maxwell in original equations presented in Quaternionic notation. The operator Del is supposed to be used with Right and Left hand derivatives allowing for outcomes not possible in the special case of oversimplified vectoral notation of Heaviside-Gibbs which loses reference to polarity and cause & effect.
![Maximum ratio and zero-forcing beamforming [Part 4, Fundamentals of mmWave communication]](http://i.ytimg.com/vi/w46c0QhByPg/mqdefault.jpg)
short and simple, you explained the motivation behind the small cells. For a researcher like me, who is a little unfamiliar with RAN, and focused on CN, it was a great intro!
4:32 How this strips interconnect to the main connection ...
just placing somewhere and go...but how it connects to other or backbone...??
There is a wired connection through the stripe, and it is connected on one side to a computer that carries out the signal processing. Here is a video that digs deeper into this topic: ua-cam.com/video/uULZ2kT9jDA/v-deo.html
Very interesting Sir, Brilliant indeed sir . Can you explain more about how strips with small antennas works . sir
Here is a video where I explain the concept in more detail:
Reinventing the Wireless Network Architecture Towards 6G: Cell-free Massive MIMO and Radio Stripes
ua-cam.com/video/ZepQAw21HfA/v-deo.html
search for Antenna Array and MIMO antenna.
Thanks for sharing your insight.
I have been studying your research on CF, Near Field comms, RIS, etc. Both cell-free and near-field communications have benefits of their own. In Cell-free, APs typically have fewer antennas than conventional gNBs used in today's 5G systems. In near field in order to work in the near field propagating regime, we need thousands of antennas to have a wide area. Near field has the magical finite depth beamforming.
Do you think it is possible to have them both in a wireless system?
I mean instead of using ELAAs, we use a cell-free architecture with a small number of antennas on each antenna, and still being able to make near field comms and finite depth beamforming possible?
Thank you
These are good points that you are making. An ELAA doesn’t have to be a conventional array with half-wavelength spacing but the antennas can be distributed over a larger area to exploit near-field properties, such as finite-depth beamforming. Usually, this has been described like having antennas distributed over a wall, but a cell-free system with arbitrary deployments is also a kind of ELAA. I think the cell-free architecture with centralized processing is the best choice in terms of performance, but a co-located deployment on the facade of a building might be more economical for a telecom operator.
Thank you very much
I think it is interesting to exploit the idea to check if near-field is possible for cell-free architecture.
and yet all of this is a dead end.
instead of simulating a narrow beam with transverse em why not utilize a non transverse mode where narrow beam is a natural outcome?
duuuh.....
why insist on stubborn stupid?
The cell-free/distributed MIMO technology isn’t relying on a particular kind of antennas or EM modes. It is about combatting pathloss by having dense deployments and control interference through distributed beamforming, using whatever kind of antennas available.
@@WirelessFuture you just totally missed the point. Path loss as square of the distance is a property of transverse em.
the most lossy propagation mode possible.
Why do you insist on continuing with the same and ignore non transverse near lossless modes?
@@paulmitchell4421 You keep making strawman arguments by making up assumptions that are not essential to this technology. Yes, one can achieve near lossless transmission in waveguides but there will be a distance-dependent pathloss in free-space propagation. If you disagree, I'll be happy to see the scientific evidence for your standpoint.
@@WirelessFuture your technology is garbage, good sir. modern technology utilizes superluminal, counterspacial and near lossles communications based on magnetodielectrics (complementary conjugate of electromagnetics) as described by Maxwell in original equations presented in Quaternionic notation. The operator Del is supposed to be used with Right and Left hand derivatives allowing for outcomes not possible in the special case of oversimplified vectoral notation of Heaviside-Gibbs which loses reference to polarity and cause & effect.