After watching the two episodes in this series, I also went back to watch your previous videos on beamforming theory-really practical and helpful! I’m very excited to see what comes next… will there be an episode on MIMO in practice?
Thank you for the video! It was very informative. However I have a small question. When you found the number of steps required to steer the beam at an angle of 60 degrees how did you get it as 30, 60 etc.? When I calculate the phase difference needed by plugging the values into the equation you gave I get a value of 145 degrees which corresponds to 26 steps. Therefore, should it not be 26,52 and 14 for channel 2,3 & 4?
Thank you for the wonderful demonstration. Your videos are very helpful. What happens when the receiver is greater distance, does the beamwidth change in that case?
Unfortunately I couldn't try it at longer distances, since the cables from the (common) local oscillator restricted the distance I could get the transmitter and receiver apart.
Hi Professor, thank you very much for your video. It really helps understanding this topic from a practical point of view. Do you have any book recommendation on this topic? I'm specifically looking for a book that talks in depth about different beam alignment and beamforming techniques used for wireless communication. Best regards :)
Sorry, I haven't been keeping up with textbooks in the area. I mostly spend my time doing research, and reading research papers. Here are a couple of my recent papers on this topic, that you might be interested in. C. Liu, M. Li, S.V. Hanly, P. Whiting and I.B. Collings, “Millimeter Wave Small Cells: Base Station Discovery, Beam Alignment and System Design Challenges”, IEEE Wireless Communications Magazine, Vol. 25, No. 4, pp. 40-46, August 2018. C. Liu, M. Li, I.B. Collings, S.V. Hanly and P. Whiting, “Design and Analysis of Transmit Beamforming for Millimeter Wave Base Station Discovery”, IEEE Trans. on Wireless Communications, Vol. 16, No. 2, pp. 797-811, February 2017.
Very good. I am quite intrigued by beamforming. I am a radio amateur, so have limited resources. Is there hardware and software around to do beamforming at a lower microwave frequency, say below 6 GHz? I do appreciate that antenna size increases. Drew VK4ZXI
Just trying to help you with an advice : from what i have understood, you want to operate a radio channel on a specific frequency. If you want to broadcast to users, beamforming is not for you. Because you will focus the strength of the signal in one direction. If you're not sure the users are waiting in that direction, then no one will receive the signal.
I'm not an antenna expert, but my assumption is that the design of the antenna back-plane is what is suppressing the side lobes ... but I'd be very interested to try the system with different antenna designs to find out.
Thank you for the video,
1 humble request, can we get some videos on markos process, rewards, guass markov process etc.
Thanks for the suggestion - I've got it on my "to do" list.
Cool demonstration
Glad you liked it.
After watching the two episodes in this series, I also went back to watch your previous videos on beamforming theory-really practical and helpful!
I’m very excited to see what comes next… will there be an episode on MIMO in practice?
I'm glad you like the videos. I'm still looking into what else I can demonstrate with this equipment.
The video is very helpful❤
Thank you for sharing this good video ☺️
I'm so glad you liked it!
Thank you for the video! It was very informative. However I have a small question. When you found the number of steps required to steer the beam at an angle of 60 degrees how did you get it as 30, 60 etc.? When I calculate the phase difference needed by plugging the values into the equation you gave I get a value of 145 degrees which corresponds to 26 steps. Therefore, should it not be 26,52 and 14 for channel 2,3 & 4?
Thank you for the wonderful demonstration. Your videos are very helpful.
What happens when the receiver is greater distance, does the beamwidth change in that case?
Unfortunately I couldn't try it at longer distances, since the cables from the (common) local oscillator restricted the distance I could get the transmitter and receiver apart.
Hi Professor,
thank you very much for your video. It really helps understanding this topic from a practical point of view. Do you have any book recommendation on this topic? I'm specifically looking for a book that talks in depth about different beam alignment and beamforming techniques used for wireless communication. Best regards :)
Sorry, I haven't been keeping up with textbooks in the area. I mostly spend my time doing research, and reading research papers. Here are a couple of my recent papers on this topic, that you might be interested in.
C. Liu, M. Li, S.V. Hanly, P. Whiting and I.B. Collings, “Millimeter Wave Small Cells: Base Station Discovery, Beam Alignment and System Design Challenges”, IEEE Wireless Communications Magazine, Vol. 25, No. 4, pp. 40-46, August 2018.
C. Liu, M. Li, I.B. Collings, S.V. Hanly and P. Whiting, “Design and Analysis of Transmit Beamforming for Millimeter Wave Base Station Discovery”, IEEE Trans. on Wireless Communications, Vol. 16, No. 2, pp. 797-811, February 2017.
@iain_explains thank you very very much!
Very good. I am quite intrigued by beamforming. I am a radio amateur, so have limited resources. Is there hardware and software around to do beamforming at a lower microwave frequency, say below 6 GHz? I do appreciate that antenna size increases. Drew VK4ZXI
I'm sure there are, but I'm not aware of them, sorry.
Just trying to help you with an advice : from what i have understood, you want to operate a radio channel on a specific frequency. If you want to broadcast to users, beamforming is not for you. Because you will focus the strength of the signal in one direction. If you're not sure the users are waiting in that direction, then no one will receive the signal.
So is this hardware able to show effectiveness of different approaches to sidelobe cancelation?
I'm not an antenna expert, but my assumption is that the design of the antenna back-plane is what is suppressing the side lobes ... but I'd be very interested to try the system with different antenna designs to find out.