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Downlink Physical Signals

5G NR primary and secondary synchronization signals (PSS and SSS) and reference signals (DM-RS for PBCH and PDSCH, PT-RS for PDSCH, CSI-RS, and PRS)

Primary and secondary downlink synchronization signals are used by the user equipment (UE) to obtain the cell identity and frame timing. The UE uses the demodulation reference signal (DM-RS) and the channel state information reference signal (CSI-RS) to aid channel estimation and to support measurements. For phase noise compensation, the UE uses the PDSCH phase tracking reference signal (PT-RS). Positioning reference signal (PRS) is used to estimate the position of the UE in the wireless network.

Functions

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Synchronization Signals

`nrPSS`	Generate PSS symbols
`nrPSSIndices`	Generate PSS resource element indices
`nrSSS`	Generate SSS symbols
`nrSSSIndices`	Generate SSS resource element indices

PDSCH Demodulation Reference Signal

`nrPDSCHDMRS`	Generate PDSCH DM-RS symbols (Since R2020a)
`nrPDSCHDMRSIndices`	Generate PDSCH DM-RS indices (Since R2020a)
`nrPDSCHDMRSConfig`	PDSCH DM-RS configuration parameters (Since R2020a)

PBCH Demodulation Reference Signal

`nrPBCHDMRS`	Generate PBCH DM-RS symbols
`nrPBCHDMRSIndices`	Generate PBCH DM-RS resource element indices

Channel State Information Reference Signal

`nrCSIRS`	Generate CSI-RS symbols (Since R2019b)
`nrCSIRSIndices`	Generate CSI-RS resource element indices (Since R2019b)
`nrCSIRSConfig`	CSI-RS configuration parameters (Since R2019b)

PDSCH Phase Tracking Reference Signal

`nrPDSCHPTRS`	Generate PDSCH PT-RS symbols (Since R2020a)
`nrPDSCHPTRSIndices`	Generate PDSCH PT-RS Indices (Since R2020a)
`nrPDSCHPTRSConfig`	PDSCH PT-RS configuration parameters (Since R2020a)

Positioning Reference Signal

`nrPRSConfig`	PRS configuration parameters (Since R2021a)
`nrPRS`	Generate PRS symbols (Since R2021a)
`nrPRSIndices`	Generate PRS resource element indices (Since R2021a)

Carrier Configuration

`nrCarrierConfig`	Carrier configuration parameters (Since R2019b)
`nrResourceGrid`	Generate empty carrier slot resource grid (Since R2020b)

Topics

Map 5G Physical Channels and Signals to the Resource Grid
Generate and map 5G NR physical channels and signals to the resource grid using 5G Toolbox™ features.
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.
5G NR CSI-RS Measurements
Learn how to measure the CSI-RSRP, CSI-RSSI, and CSI-RSRQ using the CSI-RS.

Featured Examples

NR PDSCH Resource Allocation and DM-RS and PT-RS Reference Signals

Learn about the effects of PDSCH resource allocation on the time-frequency structure of DM-RS and PT-RS.

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NR SSB Beam Sweeping

Employ beam sweeping at gNB and UE and learn about beam management procedures during initial access.

Open Script

NR Downlink Transmit-End Beam Refinement Using CSI-RS

Transmit multiple CSI-RS resources in different directions in a scattering environment and select the optimal transmit beam based on RSRP.

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NR Phase Noise Modeling and Compensation

Analyze the impact of phase noise in a 5G OFDM system and use PT-RS in compensating the CPE.

Open Live Script

NR Positioning Reference Signal

Learn about the effects of different PRS resource set configurations on the time-frequency structure of PRS resources.

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NR Positioning Using PRS

Calculate the position of UE within a network of gNBs by using NR positioning reference signal.

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New

Vehicle Tracking for Urban Air Mobility Using 5G Position Reference Signal

Use 5G position reference signals (PRS) to track unmanned aerial vehicles (UAV) for urban air mobility applications.

Since R2023b

Open Live Script