DMRS (PUSCH, 6GR)

The DMRS group of the PUSCH tab. All parameters are auto-coupled — see Auto and Manual Parameter Coupling.

DMRS Nid Source - Selects where the DMRS scrambling identity comes from: Cell ID (derived from the cell ID) or From RRC (taken from Nid0 / Nid1, or from Half Pi BPSK Nid0 / Nid1 when transform precoding is in use, selected between by DMRS nSCID).

Default: Cell ID

Choices: Cell ID, From RRC

DMRS nSCID - Sets the DMRS scrambling initialization selector n_SCID, which chooses between the Nid0 and Nid1 identities.

Default: 0

Range: 0 to 1

Nid0 / Nid1 - One row holding two values, the two DMRS scrambling identities (the higher-layer scramblingID0 and scramblingID1 parameters). DMRS nSCID selects which one applies. Used while DMRS Nid Source is From RRC and Transform Precoding is off.

Default: 0 for both

Range: 0 to 65535

Half Pi BPSK Binary phase shift keying - A type of phase modulation using 2 distinct carrier phases to signal ones and zeros. Nid0 / Nid1 - One row holding two values, the DMRS scrambling identities that replace Nid0 / Nid1 when transform precoding is in use (the higher-layer pi2BPSK-ScramblingID0 and pi2BPSK-ScramblingID1 parameters). They apply while DMRS-UplinkTransformPrecoding is set and tp-pi2BPSK is on.

Default: 0 for both

Range: 0 to 65535

RS Id - One row holding a source selector and a value, setting the reference signal identity used for DMRS sequence generation when transform precoding is enabled.

Cell ID - The reference signal identity is derived from the cell ID.
From RRC - The identity is the PUSCH identity entered beside the selector, emulating the higher-layer nPUSCH-Identity parameter.

Default: source Cell ID; PUSCH identity the carrier's cell identity

Choices (source): Cell ID, From RRC. Range (PUSCH identity): 0 to 1007

DMRS Configuration - Sets the DMRS configuration type (3GPP dmrs-Type). Type2 doubles the number of DMRS ports available, and allows a third CDM group without data.

Default: Type1

Choices: Type1, Type2

DMRS Duration / Max Length - One row holding two values. DMRS Duration sets whether a DMRS occasion spans one symbol (Single-Symbol) or two (Double-Symbol); DMRS Max Length sets the maximum DMRS length in symbols.

Default: Single-Symbol, max length 1

Choices: Single-Symbol, Double-Symbol. Max length 1, 2

DMRS TypeA Pos / Add Pos - One row holding two values. DMRS TypeA Pos sets the position of the first DMRS symbol for mapping type A; DMRS Add Pos sets the number and position of additional DMRS occasions (pos0 to pos3 per 3GPP TS Technical Specification 38.211).

Default: Pos2 and Pos0

Choices: TypeA Pos Pos2, Pos3. Add Pos Pos0, Pos1, Pos2, Pos3

DMRS Power Boosting - Sets the DMRS power boost relative to the data.

Default: Auto — follows the CDM groups: 0 dB for 1 group, 3 dB for 2 groups, 3 dB (Type1) or 4.77 dB (Type2) for 3 groups

Range: -30 to 30 dB

Enhanced DMRS Type - Enables the enhanced DMRS type.

Default: Cleared

DMRS-Uplink - Uses the uplink DMRS configuration described in 3GPP Release 16, in which n_SCID is applied per antenna port rather than as a single carrier-wide value.

Default: Cleared

DMRS-UplinkTransformPrecoding - Uses the transform-precoding-specific uplink DMRS configuration described in 3GPP Release 16. Meaningful only while Transform Precoding is enabled.

Default: Cleared