I have a doubt regarding Pilot signals such as CSI-RS in NR.

Using a large number of CSI-RS affects Datarate significantly?

or it is negligible?

Because I wonder it is meaningful that optimize the number of CSI-RS.

Have a nice day!

  • $\begingroup$ Obviously a pilot impacts bitrate, but you could trade off against poorly quality signal reception. There's a way to optimize pilot rate but it's dependent upon the environment. $\endgroup$ Oct 28, 2021 at 1:50
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    $\begingroup$ To answer your questions: Yes. It depends. It is. You may want to check these papers (Ostman et al., 2017) and (Ferrante et al., 2018). $\endgroup$
    – AlexTP
    Oct 28, 2021 at 8:36
  • $\begingroup$ @FourierFlux Thank you for your answer! $\endgroup$
    – Kitae Kim
    Oct 28, 2021 at 10:42
  • $\begingroup$ @AlexTP Thank you! I will take a look at the papers. $\endgroup$
    – Kitae Kim
    Oct 28, 2021 at 10:42
  • $\begingroup$ Basically you need to account for how fast the channel changes. From what I remember if you viewed it as a type of gaussian process there's a way to compute the optimal update rate but I do not remember. $\endgroup$ Oct 28, 2021 at 15:13


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