Downlink Physical Signals

5G NR primary and secondary synchronization signals, channel state and demodulation reference signals

Primary and secondary downlink synchronization signals are used by the user equipment (UE) to obtain the cell identity and frame timing. The UE uses physical signals such as channel state information reference signals (CSI-RS) and demodulation reference signals (DM-RS) to aid channel estimation and to support measurements.


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nrPSSGenerate PSS symbols
nrPSSIndicesGenerate PSS resource element indices
nrSSSGenerate SSS symbols
nrSSSIndicesGenerate SSS resource element indices
nrPBCHDMRSGenerate PBCH DM-RS symbols
nrPBCHDMRSIndicesGenerate PBCH DM-RS resource element indices
nrCSIRSGenerate CSI-RS symbols
nrCSIRSIndicesGenerate CSI-RS resource element indices
nrCSIRSConfigCSI-RS configuration parameters
nrCarrierConfigCarrier configuration parameters


Synchronization Signal Blocks and Bursts

Generate multiple 5G NR synchronization signal blocks (SSBs) to form a synchronization signal burst (SS burst).

NR Channel Estimation Using CSI-RS

Perform channel estimation using CSI-RS symbols and indices mapped into a carrier resource grid.