Sequence Generation

The sequence generation (package) provides modules for generating all the reference signal standardized by 3GPP for 5G NR systems. The reference signal (RS) and their utilities for downlink and uplink provided respectively in table1 and table2.

Table 2 Table-1: Downlink Reference Signal and its utility

Reference Signal

Utility

Purpose

Primary synchronization signal (PSS)

DL Time synchronization

SSB

Secondary synchronization signal (SSS)

DL Frequency synchronization

SSB

Channel state information RS (CSI-RS)

DL CSI estimation, Beam management

DL CSI Acquisition

Demodulation reference signal (DMRS)

Equalization for DL Broadcast Channel

PBCH

Demodulation reference signal (DMRS)

Equalization for DL Control Channel

PDCCH

Demodulation reference signal (DMRS)

Equalization for DL Shared Channel

PDSCH

Positioning reference signal (PRS)

Delay, Angle and Carrier phase estimation

Position Estimation

Pseudo random (PN) sequence

Random variable generator

NA
Table 3 Table-2: Uplink Reference Signal and its utility

Reference Signal

Utility

Purpose

Sounding reference signal (SRS) [*]

Uplink CSI estimation

Uplink CSI Acquisition

Demodulation reference signal (DMRS)*

Equalization for UL Shared Channel

PUSCH

Demodulation reference signal (DMRS)*

Equalization for UL Control Channel

PUCCH

PRACH Preamble

UL Synchronization

PRACH
Table 4 Table-4: Sidelink Reference Signal and its utility

Reference Signal

Utility

Purpose

Sidelink Primary Synchronization Signal (S-PSS)

Sidelink Time Synchronization

Sidelink-SSB

Sidelink Secondary Synchronization Signal (S-SSS)

Sidelink Frequency Synchronization

Sidelink-SSB

Demodulation reference signal (DMRS)

Equalization for Sidelink Broadcast Channel

PSBCH

Demodulation reference signal (DMRS)

Equalization for Sidelink Control Channel

PSCCH

These reference signals are used for various purposes such as link adaptation, rank adaptation, initial access, synchronization, precoding, data decoding and position estimation etc. in uplink and downlink. The reference signal supported by 5G toolkit are explained in detailed in following sections. The packages generates these 3GPP compliant reference signals in for link level and system level simulations. Moreover, these reference signal can be directly mapped to OFDM resource grid and used for transmission over wireless channel for simulation using [??].

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