nrWavegenPUCCH3Config
Description
The nrWavegenPUCCH3Config
object sets physical uplink control channel
(PUCCH) configuration parameters for format 3, as defined in TS 38.211 Sections 6.3.2.1,
6.3.2.2, 6.3.2.6, and 6.4.1.3.3 [1]. Use this object to set the
PUCCH
property of the nrULCarrierConfig
object when you
configure 5G uplink waveform generation.
The default nrWavegenPUCCH3Config
object allocates a PUCCH format 3 in the first
resource block (RB) of the bandwidth part (BWP) and in all OFDM symbols in a slot. PUCCH
format 3 transmission is in all slots and carries 10 uplink control information (UCI) part 1
bits and no UCI part 2 bits.
For operation with shared spectrum channel access
for frequency range 1 (FR1), set the Interlacing
property to true
, then use the
RBSetIndex
and InterlaceIndex
object properties to specify the allocated frequency
resources. In addition, you can use the SpreadingFactor
and OCCI
properties to specify single-interlace configurations. (since R2023b)
Creation
Description
creates a
default PUCCH format 3 configuration object for 5G waveform generation.pucch
= nrWavegenPUCCH3Config
sets writable properties using one or more name-value arguments. For example,
pucch
= nrWavegenPUCCH3Config(PropertyName=Value
)Period=20
specifies 20 slots for the PUCCH allocation period.
Properties
Channel Configuration
Option to enable this PUCCH configuration in 5G waveform generation, specified as one of these numeric or logical values.
1
(true
) — Enable this PUCCH.0
(false
) — Disable this PUCCH.
Data Types: double
| logical
Name of this PUCCH format 3 configuration, specified as a character vector or string scalar. Use this property to set a description to the configuration.
Data Types: char
| string
Power scaling of the PUCCH in dB, specified as a real-valued scalar or real-valued vector of
length equal to the number of allocated transmissions in a period configured
by the SlotAllocation
property. Use this property to
scale the power of the configured PUCCH in the generated 5G waveform.
Data Types: double
ID of the BWP containing the configured PUCCH, specified as a nonnegative integer. Use this
property to associate this PUCCH configuration with one of the BWP configurations
specified by the BandwidthParts
property of the nrULCarrierConfig
object.
Data Types: double
Modulation scheme, specified as 'QPSK'
or
'pi/2-BPSK'
.
Modulation Scheme | Number of Bits Per Symbol |
---|---|
'pi/2-BPSK' | 1 |
'QPSK' | 2 |
Data Types: char
| string
OFDM symbol allocation of the PUCCH within a slot, specified as []
or a
two-element vector of nonnegative integers. The first element of this property
represents the start of symbol allocation. The second element represents the number of
consecutively allocated OFDM symbols and must be in the range [4, 14]. To indicate that
no OFDM symbols are allocated for the PUCCH, use []
or specify the
second element of the vector as 0
.
Data Types: double
Slot allocation in a PUCCH period, specified as a nonnegative integer or a row vector of nonnegative integers. This property specifies the slot positions of the PUCCH by using 0-based indexing and values that are less than the value of the Period
property. The object ignores slot allocation values that are greater than the period.
Data Types: double
PUCCH allocation period in slots, specified as a nonnegative integer or []
. An empty period indicates no repetition.
Data Types: double
Physical resource block (PRB) allocation of the PUCCH within the BWP, specified as a vector of
integers from 0 to 274 or []
. To indicate
that no resource blocks are allocated for the PUCCH, use
[]
.
Dependencies
To enable this property, set the
Interlacing
property to
0
(false
).
Data Types: double
Frequency hopping configuration for the PUCCH, specified as one of these values.
'neither'
— Indicates no frequency hopping'intraSlot'
— Enables intraslot frequency hopping'interSlot'
— Enables interslot frequency hopping
When you enable interslot frequency hopping, the slot number determines the starting
resource block for the allocated OFDM symbols. For even-numbered slots, the resource
block starts from the minimum resource block allocated in the
PRBSet
property. For odd-numbered slots, the resource block
starts from the resource block provided in the SecondHopStartPRB
property.
Dependencies
To enable this property, set the Interlacing
property to
0
(false
).
Data Types: char
| string
Starting PRB index of the second hop relative to the BWP, specified as an integer from 0 to 274.
Dependencies
To enable this property, set the FrequencyHopping
property to
'intraSlot'
or 'interSlot'
and set the
Interlacing
property to 0
(false
).
Data Types: double
Since R2023b
Interlaced resource allocation, specified as one of these values.
0
(false
) — Disable interlaced resource allocation.1
(true
) — Enable interlaced resource allocation. Use theRBSetIndex
andInterlaceIndex
properties to configure the frequency resource allocation.
This property implements the useInterlacePUCCH-PUSCH higher-layer parameter.
Data Types: double
| logical
Since R2023b
Indices of RB sets between intracell guard bands (0-based), specified as a vector of nonnegative integers. Use this property to specify the indices of the RB sets in an interlaced resource allocation.
Dependencies
To enable this property, set the Interlacing
property to
1
(true
).
Data Types: double
Since R2023b
Interlace indices in the interlaced resource allocation, specified as a vector of nonnegative integers with up to M elements. The vector element must be in the range [0, M – 1). M = 10 for 15 kHz subcarrier spacing and M = 5 for 30 kHz subcarrier spacing.
Dependencies
To enable this property, set the
Interlacing
property to
1
(true
).
Data Types: double
Group hopping configuration for the PUCCH, specified as one of these values.
'neither'
— Disables group hopping and sequence hopping'enable'
— Enables group hopping and disables sequence hopping'disable'
— Disables group hopping and enables sequence hopping
This property is the higher-layer parameter pucch-GroupHopping.
Data Types: char
| string
Hopping identity of the PUCCH, specified as []
or an integer from 0 to 1023.
If the higher-layer parameter hoppingId is configured, this property must be an integer from 0 to 1023.
If the higher-layer parameter hoppingId is not configured, this property must be equal to the physical layer cell identity and be an integer from 0 to 1007.
When you specify this property as []
, the object sets the PUCCH hopping identity to the physical layer cell identity specified by the NCellID
property of the nrULCarrierConfig
object.
Data Types: double
Since R2025a
Mapping of the PUCCH port to physical antennas, specified as one of these values:
[]
— The instance specified by thisnrWavegenPUCCH3Config
object is automatically mapped in the generated waveform starting from the first column.Vector of N unique positive integers — The vector elements indicate where the instance specified by this
nrWavegenPUCCH3Config
object is mapped in the generated waveform.If
PrecodingMatrix
is empty ([]
), N is 1, which corresponds to the single PUCCH port.If
PrecodingMatrix
is nonempty, N and the number of rows in the precoding matrix must be equal.
Data Types: double
Since R2025a
Precoding matrix, specified as one of these options:
[]
— Precoding is not applied to the generated waveform.M-by-1 numeric vector — Precoding is applied to the generated waveform using the specified vector.
If
AntennaMapping
is empty ([]
), M is any positive integer.If
AntennaMapping
is nonempty, M and the number of unique elements specified in the antenna mapping must be equal.
Note
Setting this property to a nonempty value can affect the power applied to the instance
specified by this nrWavegenPUCCH3Config
object in the generated waveform.
Data Types: double
Spreading factor, specified as 1
, 2
, or 4
.
Dependencies
To enable this property, set the InterlaceIndex
property to a
scalar.
Data Types: double
Orthogonal cover code index (OCCI), specified as an integer from 0 to 3. The OCCI value must be less than the SpreadingFactor
property.
Dependencies
To enable this property, set the InterlaceIndex
property to a
scalar.
Data Types: double
PUCCH scrambling identity, specified as []
or an integer from 0 to 1023.
If the higher-layer parameter dataScramblingIdentityPUSCH is configured, this property must be an integer from 0 to 1023.
If the higher-layer parameter dataScramblingIdentityPUSCH is not configured, this property must be equal to the physical layer cell identity and be an integer from 0 to 1007.
When you specify this property as []
, the object sets the PUCCH scrambling identity to the physical layer cell identity specified by the NCellID
property of the nrULCarrierConfig
object.
Data Types: double
Radio network temporary identifier of the user equipment (UE), specified as an integer from 0 to 65,535.
Data Types: double
PUCCH encoding of UCI, specified as one of these numeric or logical values.
1
(true
) — Enable UCI encoding.0
(false
) — Disable UCI encoding.
Data Types: double
| logical
UCI and DM-RS Configuration
Target code rate, specified as a numeric scalar between 0 and 1.
Dependencies
To enable this property, set the Coding
property to 1
and the NumUCIBits
and
NumUCI2Bits
properties to a
positive integer.
Data Types: double
Number of UCI part 1 bits, specified as an integer from 0 to 1706. For no UCI transmission,
set this property to 0
.
Data Types: double
Source of UCI part 1 contents, specified as one of these options.
'PN9-ITU'
,'PN9'
,'PN11'
,'PN15'
, or'PN23'
Two-element cell array consisting of one of the character vectors from the previous list and a random numeric seed (for example,
{'PN9',7}
)Binary-valued vector
If you do not specify a random seed, the object initializes all shift registers with an active state.
Dependencies
To enable this property, set the NumUCIBits
property to a positive integer.
Data Types: double
| cell
| string
| char
Number of UCI part 2 bits, specified as an integer from 0 to 1706. For
no UCI transmission, set this property to
0
.
Data Types: double
Source of UCI part 2 contents, specified as one of these options.
'PN9-ITU'
,'PN9'
,'PN11'
,'PN15'
, or'PN23'
Two-element cell array consisting of one of the character vectors from the previous list and a random numeric seed (for example,
{'PN9',7}
)Binary-valued vector
If you do not specify a random seed, the object initializes all shift registers with an active state.
Dependencies
To enable this property, set the NumUCI2Bits
property to a positive
integer.
Data Types: double
| cell
| string
| char
Demodulation reference signal (DM-RS) scrambling identity, specified as []
or an integer from 0 to 65,535.
If the higher-layer parameter scramblingID0 is configured, this property must be an integer from 0 to 65,535.
If the higher-layer parameter scramblingID0 is not configured, this property must be equal to the physical layer cell identity and be an integer from 0 to 1007.
When you specify this property as []
, the object sets the DM-RS scrambling identity to the physical layer cell identity specified by the NCellID
property of the nrULCarrierConfig
object.
Data Types: double
Since R2023b
Release 16 low peak-to-average-power (PAPR) DM-RS sequence for DFT-s-OFDM, specified as one of these logical values.
0
(false
) — Disable the use of low PAPR DM-RS for DFT-s-OFDM. The DM-RS sequence generation uses type 1 low PAPR sequences.1
(true
) — Enable the use of low PAPR DM-RS for DFT-s-OFDM. The DM-RS sequence generation uses type 2 low PAPR sequences.
Dependencies
To enable this property, set the Modulation
property to
'pi/2-BPSK'
.
Data Types: double
Option to enable additional demodulation reference signal (DM-RS), provided by the higher-layer parameter additionalDMRS, specified as one of these numeric or logical values.
0
(false
) — Disable additional DM-RS. When the number of the PUCCH OFDM symbols is greater than 9, two DM-RS symbols are present.1
(true
) — Enable additional DM-RS. When the number of the PUCCH OFDM symbols is greater than 9, four DM-RS symbols are present.
Data Types: double
| logical
Power scaling of the PUCCH DM-RS in dB, specified as a real-valued scalar. Use this property
to scale the power of the PUCCH DM-RS in the generated 5G waveform. This scaling is
additional to the PUCCH-wide power scaling specified by the Power
property.
Data Types: double
Examples
Create two SCS carrier configuration objects with mixed numerologies.
carrier1 = nrSCSCarrierConfig(SubcarrierSpacing=15); carrier2 = nrSCSCarrierConfig(SubcarrierSpacing=30);
Create two BWP configuration objects, one for each of the SCS carriers.
bwp1 = nrWavegenBWPConfig(BandwidthPartID=1,SubcarrierSpacing=15); bwp2 = nrWavegenBWPConfig(BandwidthPartID=2,SubcarrierSpacing=30);
Create a PUCCH format 0 configuration object for the first SCS carrier and a PUCCH format 1 configuration object for the second SCS carrier. For configuring PUCCH format 2, 3, or 4, use the nrWavegenPUCCH2Config
, nrWavegenPUCCH3Config
, or nrWavegenPUCCH4Config
configuration objects, respectively. By default, each PUCCH configuration object enables the PUCCH on their respective carriers.
pucch1 = nrWavegenPUCCH0Config( ... BandwidthPartID=1,SlotAllocation=0:9,PRBSet=2,DataSourceUCI='PN9'); pucch2 = nrWavegenPUCCH1Config( ... BandwidthPartID=2,SlotAllocation=0:9,PRBSet=2,DataSourceUCI='PN9');
Create a PUSCH configuration object such that the PUSCH does not overlap with the previously configured PUCCH in the generated waveform.
pusch = nrWavegenPUSCHConfig(BandwidthPartID=1, ...
SymbolAllocation=[0,8],PRBSet=10:51);
Create an uplink carrier configuration object for 5G waveform generation, specifying the previously defined configurations. You can disable the PUCCH in either SCS carrier by setting the corresponding cfg.PUCCH{1}.Enable
or cfg.PUCCH{2}.Enable
properties, respectively, to false
.
cfg = nrULCarrierConfig( ... SCSCarriers={carrier1,carrier2}, ... BandwidthParts={bwp1,bwp2}, ... PUSCH={pusch}, ... PUCCH={pucch1,pucch2});
References
[1] 3GPP TS 38.211. “NR; Physical channels and modulation.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network.
Extended Capabilities
C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.
Version History
Introduced in R2021bUse the AntennaMapping
and PrecodingMatrix
properties to specify the antenna mapping and a precoding
matrix, respectively.
Configure separate power scaling for each PUCCH in a period by setting the
Power
property to a vector of length equal to
the number of allocated transmissions in a period.
Use the Interlacing
, RBSetIndex
, InterlaceIndex
, SpreadingFactor
, and OCCI
properties to configure interlaced PUCCH transmissions.
Setting the Interlacing
property to true
disables
the PRBSet
and FrequencyHopping
properties.
Use the DMRSUplinkTransformPrecodingR16
and NID0
object properties to specify type 2 low PAPR PUCCH DM-RS
sequences and DM-RS scrambling identities, respectively, as defined in Release 16 of TS
38.211 Section 6.4.1.3.3.1.
See Also
Functions
Objects
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