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 [??].

[*]

These features will be released in upcoming versions.

Table of Contents

• Primary Synchronization Signal
• Secondary Synchronization Signal
• Demodulation Reference Sequence (DMRS)
• Positioning Reference Sequence (PRS)
• Channel State Information Reference Sequence (CSI-RS)
• Sounding Reference Sequence (SRS)
• Pseudo Random (PN) Sequence
• PUCCH Format 0 Sequence
• PUCCH Format 1 Sequence
• Low PAPR Sequence Type 1
• Low PAPR Sequence Type 2
• Primary Synchronization Signal for Sidelink (S-PSS)
• Secondary Synchronization Signal for Sidelink (S-SSS)