ltePSBCHDRS
PSBCH demodulation reference signal
Description
[
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.seq
,info
]
= ltePSBCHDRS(ue
)
Examples
Generate PSBCH DM-RS Sequence
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')
Input Arguments
ue
— User equipment settings
structure
User equipment settings, specified as a parameter structure containing this field:
SidelinkMode
— Sidelink mode
'D2D'
(default) | 'V2X'
| optional
Sidelink mode, specified as 'D2D'
or
'V2X'
.
Data Types: char
| string
NSLID
— Physical layer sidelink synchronization identity
integer from 0 to 355
Physical layer sidelink synchronization identity, specified as an integer from 0 to 355. ()
Data Types: double
Data Types: struct
Output Arguments
seq
— PSBCH DM-RS values
column vector
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
info
— PSBCH DM-RS information
structure
PSBCH DM-RS information about the intermediate variables used to create the DM-RS, returned as a parameter structure containing these fields:
SeqGroup
— Base sequence group number for each slot
two-column vector
Base sequence group number for each slot, returned as a two-column vector. (u)
SeqIdx
— Base sequence number for each slot
two-column vector
Base sequence number for each slot, returned as a two-column vector. (v)
RootSeq
— Root Zadoff-Chu sequence index for each slot
two-column vector
Root Zadoff-Chu sequence index for each slot, returned as a two-column vector. (q)
NCS
— Cyclic shift values for each slot
two-column vector
Cyclic shift values for each slot, returned as a two-column vector. ()
NZC
— Zadoff-Chu sequence length
integer
Zadoff-Chu sequence length, returned as an integer. ()
OrthSeq
— Orthogonal cover value for each slot
matrix
Orthogonal cover value for each slot, returned as a matrix. ()
Data Types: struct
More About
PSBCH Demodulation Reference Signal
The PSBCH demodulation reference signal (DM-RS) is transmitted alongside the
ltePSBCH
values in the central 72 resource elements and in two SC-FDMA
symbols in a synchronization subframe for D2D sidelink mode and three SC-FDMA symbols for
V2X.. For zero-based indexing, the SC-FDMA symbol indices are {3,10} for normal cyclic
prefix and {2,8} for extended cyclic prefix. These are the same symbols used by the PUSCH
DM-RS, see ltePUSCHDRSIndices
. For the V2X sidelink mode,
the symbol indices are {4,6,9}.
Note
The indicated symbol indices are based on TS 36.211, Section 9.8, but expanded from symbol index per slot to symbol index per subframe to align with the LTE Toolbox™ subframe orientation. For more information on mapping symbols to the resource element grid, see Resource Grid Indexing.
PSBCH Demodulation Reference Signal Indexing
Use the indexing function, ltePSBCHDRSIndices
, and the corresponding
sequence function, ltePSBCHDRS
,
to index the resource grid for any synchronization subframe number.
The indices are ordered as the PSBCH DM-RS symbols should be, applying
frequency-first mapping, into the two DM-RS SC-FDMA symbols. For more
information on mapping symbols to the resource element grid, see Resource Grid Indexing.
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
See Also
ltePSBCHDRSIndices
| ltePSBCH
| ltePSBCHDecode
| ltePSBCHIndices
Commande MATLAB
Vous avez cliqué sur un lien qui correspond à cette commande MATLAB :
Pour exécuter la commande, saisissez-la dans la fenêtre de commande de MATLAB. Les navigateurs web ne supportent pas les commandes MATLAB.
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)