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That was a great explanation while referring to the 3GPP standard as well. I'm not a telecom engineer but I have to learn about resource allocation for another project. This helped me a lot to understand how things work.
My best compliments for this video. The topic has been explained in such an incredible easy way! Everyone can understand it! Thank you! Hope you will add some more videos on 5G.
Thank you for publishing such interesting videos. Where can I find the presentations (.ppt files) for your videos, not just this one but also the others?
Thank you for this video. Really helpful. One question, though. Why do we have 50 RBs for SCS = 30 KHz? If it is the double of symbols compared to SCS 15 KHz, why don’t we have 200 RBs?
RBs are in frequency domain and symbols are in time domain. So with SCS 30KHz, a RB takes double the amount of bandwidth compared to 15KHz. Thus, a channel bandwidth having 100RBs with 15KHz will only have 50 RBs in case of 30KHz.
In NR, usually we are using the term Slots and so as an example, in case of low band, one slot is equal to a subframe. So, both of them have 14 symbols.
We try our best to keep the information vendor agnostic on this channel and as such, we try not to discuss vendor specific parameters. Thanks for understanding :)
This is based on specs. In simple words, in LTE there is a 1 MHz guard band on both sides in 20MHz channel. So actual bandwidth used by LTE is 18MHz. In 18MHz, we can have only 100 RBs (12 * 15 * 100 = 1800kHz or 18MHz -> 1RB = 12 subcarriers with 15kHz spacing)
