Will Signal Blockage be a Problem for 6G Mobile at 28 GHz mmWave?

[@marcossrivas]

Hello Iain, great video as always! There are many multicarrier modulation schemes, such as FBMC, UFMC, Faster-than-Nyquist, and GFDM. I think a video about these topics would be fantastic. Additionally, I’m not entirely sure if these schemes are already being used in 5G or if they are planned for implementation in 6G.

[@iain_explains]

Thanks for the suggestion. Those are all great topics for future videos!

[@agnelomascarenhas8990]

A diffraction slit experiment would have been great.

[@Verbatino]

There was a nice concept of handling this problem with a specific design of stripes with transmitters - that was a early development funded by EU SNS JU. I can't now recover who made that concept or how it was named (probably it was some Ericsson R&D project). But in overall it had much sense since it was a basically cell-free MIMO design...

[@drewwollin3462]

I thought the main purpose of 28 GHz was for areas where there are large numbers of active phones, such as sporting arenas or concerts. In such venues, there are few obstacles. To a point, the disadvantage of 28 GHz, the limited range, becomes an advantage so cells don't interfere with each other.

[@iain_explains]

Those applications might be OK for tall people who use headphones and hold the phone out in front of them with just two fingers, so their own head doesn't block half the field of view and their hand block most of the other half. But short people will have their signals blocked by the tall people sitting next to them, plus any supporting structures holding up the roof, etc.

[@logminusone1272]

The Engineering approach to wireless. 👍

[@divyar8462]

Sir, please do a lecture on ISAC and ISAC waveform design scenario especially Dual function waveforms for sensing and communication (MIMO-OFDM).

[@iain_explains]

Thanks for the topic suggestion. It's on my "to do" list.

[@usmanvirk254]

Are we going to use FR2 for 6G applications? The industry is highly interested in FR3 band 7-24 GHz, more specifically around 10 GHz band. Operators around the world are giving up their licenses for FR2, given the propagation and other challenges at this frequency band.

[@FARHANRASHID-my9wg]

Hello sir..i want to ask you that how do signals from TV satellite reach a very large distance to our rooftop antennas?Do those signals emitted by satellites move in all directions?how can thousands or millions of televisions receive signals from one satellite,it blows my mind?

[@Apstergos]

Aaaaand that is why reconfigurable intelligent surfaces (RIS) and Non terrestrial networks are being developed.

[@James_Knott]

In telecom, attenuators are called "pads". Apparently, your pad doesn't attenuate very much! 🙂

[@iain_explains]

🤣

[@stephensu4371]

i got an idea but not sure will it work😂, maybe just maybe, just like Ian says, we may enhance the phased array to have a quick scan for the mobile device, and we may need to enhance the software to do so😂