Preliminary Technical
Data
Rev. PrA | Page 75 of 82
CASE STUDY FOR CONFIGURING CLGC BATCH SAMPLING PERIOD
Signal Under Test
Shown below is the demodulated version of the 5G NR TM2 signal under test. The signal has a bandwidth of 100Mhz, and a sub-
carrier spacing of 30Khz,(numerology u=1). The signal has an RMS power of ~-38.14dBFS.
Figure 70. VSA Demodulated 5GNR TM2 signal under test
Time-Frequency Resource Block Allocations
Time-frequency resource allocation on the 5GNR signal under test is shown in Figure 71. The signal has majority of the resource
blocks allocated to PDCCH (Downlink Control Information), and PDSCH_DMRS reference symbols, that are QPSK modulated.
There are 48 resource blocks(RBs) allocated to Downlink Control Information PDCCH data. The UE performs blind decoding for
synchronization with the help of PDCCH symbols.
There are at least 48 resource blocks(RBs) allocated to PDSCH DMRS reference symbols, that are used for channel estimation.
Since 5GNR standard does not have Cell Specific Reference Symbols, hence DMRS symbols are used
The remaining resource blocks(<10) are allocated for PDSCH physical layer user data.
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