ltePUSCH

Physical uplink shared channel

Syntax

sym=ltePUSCH(ue,chs,cws)

Description

sym=ltePUSCH(ue,chs,cws) returns a vector containing the Physical Uplink Shared Channel (PUSCH) complex symbols for UE-specific settings, ue, PUSCH channel-specific configuration, chs, and the codeword or codewords contained in cws. The size of the matrix sym is N-by-P. Where N is the number of modulation symbols for one antenna port and P is the number of transmission antennas.

Examples

Create PUSCH Complex Symbols

Generate PUSCH symbols for TS36.104 Uplink FRC A3-3 with 3MHz bandwidth.

Initialize UE specific (ue) and channel (pusch) configuration structures, and fixed reference channel (frc).

ue.NCellID = 1;
ue.NSubframe = 0;
ue.RNTI = 1;

pusch.Modulation = 'QPSK';
pusch.PRBSet = [0:14].';
pusch.RV = 0;

frc = lteRMCUL('A3-3');

Generate transport block (trBlk), UL-SCH codewords (cw), and PUSCH symbols (puschSym).

trBlk  = randi([0,1],frc.PUSCH.TrBlkSizes(1),1);
cw = lteULSCH(ue,pusch,trBlk );
puschSym = ltePUSCH(ue,pusch,cw);

Input Arguments

ue — UE-specific settings

structure

UE-specific settings, specified as a structure having the following fields.

Parameter Field	Required or Optional	Values	Description
NCellID	Required	Nonnegative integer	Physical layer cell identity
NSubframe	Required	Integer	Subframe number
RNTI	Required	Integer	Radio network temporary identifier (RNTI) value (16 bits)
NTxAnts	Optional	1 (default), 2, 4	Number of transmission antennas.

Data Types: struct

chs — PUSCH channel-specific configuration

structure

PUSCH channel-specific configuration, specified as a structure having the following fields.

Parameter Field	Required or Optional	Values	Description
Modulation	Required	'QPSK', '16QAM', '64QAM', or '256QAM'	Modulation format, specified as a character vector or string scalar for one codeword, or a cell array of character vectors or string array for two codewords.
PRBSet	Required	Integer column vector or two-column matrix	Physical Resource Block (PRB) indices, specified as a column vector or two-column matrix, corresponding to the slot wise resource allocations for this PUSCH. If a column vector is provided for PRBSet, the resource allocation is the same in both slots of the subframe. The two-column matrix can be used to specify differing PRBs for each slot in a subframe. The PRB indices are zero-based.
NLayers	Optional	1 (default), 2, 3, 4	Number of transmission layers.
The following field is required only when ue.NTxAnts is set to 2 or 4. Acceptable values for PMI depend upon ue.NTxAnts and NLayers.
PMI	Optional	Numeric scalar (0...23) 0 (default)	Scalar precoder matrix indication (PMI) to be used during precoding

Data Types: struct

cws — Codeword bit values

vector | cell array

Codeword bit values to be modulated, specified as a vector of bit values for one codeword, or a cell array containing one or two vectors of bit values corresponding to the one or two codewords.

Data Types: double

Output Arguments

sym — PUSCH symbols

complex-valued numeric matrix

PUSCH symbols, returned as a complex-valued numeric matrix of size N-by-P. N is the number of modulation symbols for one antenna port. P is the number of transmission antennas.

Data Types: double
Complex Number Support: Yes

References

[1] 3GPP TS 36.104. “Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) Radio Transmission and Reception.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network. URL: https://www.3gpp.org.

Version History

Introduced in R2013b