0
$\begingroup$

from the 5G NR manual shown bellow. there is a diagram i have attache. is there some intuitive explanation regarding why as the carrier spacing goes high then the slot time goes low. how are these two connect together? thanks.

https://www.sharetechnote.com/html/5G/5G_FrameStructure.html

$\endgroup$
1
  • 1
    $\begingroup$ Because (1) the number of symbols per slot is unchanged and (2) the higher subcarrier spacing, the shorter OFDM symbols: (1) is specified by the standard for scheduling purposes and (2) is the nature of OFDM. $\endgroup$
    – AlexTP
    Commented Aug 27, 2022 at 20:43

1 Answer 1

0
$\begingroup$

That's simply how OFDM is defined: you take N samples, do a DFT, you get N subcarriers. Since the bandwidth is always the same, the subcarrier spacing is necessarily proportional to 1/N, and due to N samples taking time proportional to N, this subcarrier spacing · symbol duration is always the same.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.