Main Content

ltePSBCHDRS

PSBCH demodulation reference signal

Description

[seq,info] = ltePSBCHDRS(ue) returns a 144-by-1 complex column vector sequence containing PSBCH demodulation reference signal (DM-RS) values and an associated information structure for the specified UE settings structure. For more information, see PSBCH Demodulation Reference Signal.

example

Examples

collapse all

Generate a PSBCH DM-RS sequence associated with both DM-RS SC-FDMA symbols in a subframe.

ue.NSLID = 170;
[psbchdrs_seq,info] = ltePSBCHDRS(ue);

Plot the DM-RS sequence (real vs. imaginary).

plot(psbchdrs_seq,'o')

Figure contains an axes object. The axes contains a line object which displays its values using only markers.

Input Arguments

collapse all

User equipment settings, specified as a parameter structure containing this field:

Sidelink mode, specified as 'D2D' or 'V2X'.

Data Types: char | string

Physical layer sidelink synchronization identity, specified as an integer from 0 to 355. (NIDSL)

Data Types: double

Data Types: struct

Output Arguments

collapse all

PSBCH DM-RS values, returned as a column vector. For the D2D sidelink mode, seq is a 144-length column containing the values for each DM-RS symbol in each slot in a subframe. For V2X, it is a 216-by-1 complex column containing the concatenated values for the three DM- RS symbols in a subframe.

Data Types: double
Complex Number Support: Yes

PSBCH DM-RS information about the intermediate variables used to create the DM-RS, returned as a parameter structure containing these fields:

Reference signal cyclic shift for each slot, returned as a two-column vector. (α)

Alpha is proportional to NCS, where α=2πncs,λ12.

Base sequence group number for each slot, returned as a two-column vector. (u)

Base sequence number for each slot, returned as a two-column vector. (v)

Root Zadoff-Chu sequence index for each slot, returned as a two-column vector. (q)

Cyclic shift values for each slot, returned as a two-column vector. (ncs,λ)

Zadoff-Chu sequence length, returned as an integer. (NZCRS)

Orthogonal cover value for each slot, returned as a matrix. (w¯)

Data Types: struct

More About

collapse all

References

[1] 3GPP TS 36.211. “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network. URL: https://www.3gpp.org.

Version History

Introduced in R2016b