What is FDM feature in 5N NR?

5G NR
1

Hi Experts,
What is FDM feature in 5N NR?
Use of FDM

2

FDM in RACH?

3

Like you have 1 slot for RACH, in frequency domain it’s divided to some parts, each part correspond to each SSB.

4

It’s linked with DMRS …PDSCH data with DMRS FDM
Need to check how DMRS FDM activated.
Any activation threshold for DMRS FDM or any switch.

5

It’s just Frequently Division multiplexing.
Like FDM of different users in same TTI, FDM of control channels with data channel.

6

The FDM of DMRS and PDSCH only applies to 256QAM

There is RND parameter to enable feature (rdEnableFDMPdschDmrs)