I have started listening to your podcasts almost every day when commuting to work. They are very helpful, educative, and perceptive. You folks made me very curious about the physical layer aspects of wireless communications (I work in MAC and network layer). I am very interested in listening to a podcast specifically on SPECTRUM COEXISTENCE among different wireless technologies (especially in the mid-bands, i.e., 1-6 GHz) from the perspective of both PHY and MAC layers (also, whether they are different for high throughput and low throughput technologies). I am eagerly looking forward to the podcast.
A very technical and twisted topic though, especially at the Physical layer! Maybe we are stranded with the coexistence of the term " Ultra-reliability" and "Low Latency" that was coined merely over the cup of coffee...:)
Prof. Erik and Prof. Emil it is my kind request that once any question has been asked to guest and once he/she answer the question, kindly again interpret or reproduce in your simple word so we (actually I ) can consume it easily...it is just request...may be this is time consuming activity ☺
Thank you. I have one question. One is clear, with higher bandwidth the symbol time decreases (Tsym = 1/B). That is advantageous for the resolution. Thus, one uses OFDM for the localization in 5G. They cut B into little chunks and prolong Tsym. To my mind, they counter the benefits of much bandwidth. Isn't that contradictiinary? Thank you.
The benefit is still there since the symbol time is 1/B. When using OFDM, you are still transmitting time-domain samples at that symbol rate. However, when you want to have S subcarriers, blocks of S time-domain symbols are grouped together and their symbol values are selected as the IDFT of the S symbols that you want to appear over the different subcarriers.
Thank you. But I assume that the way of the communication plays a role, although, it is minor. That is the only reason why they introduced Mobile Edge Cloud/Computing, I guess.