ns3::NrCbTwoPort Class Reference

Implementation of the two-port codebook in 3GPP TS 38.214 This class implements a codebook for a gNB with at most 2 antenna ports. For a single port, it returns single-element matrix with value 1.0. For two ports, it implements Table 5.2.2.2.1-1: Codebooks for 1-layer and 2-layer CSI reporting using antenna ports 3000 to 3001. There is a slight abuse of notation: For the "codebook index", the i2 index of other Type-I codebooks is used, and the i1 index remains unused. More...

#include "nr-cb-two-port.h"

Inheritance diagram for ns3::NrCbTwoPort:

Collaboration diagram for ns3::NrCbTwoPort:

Public Member Functions
ComplexMatrixArray	GetBasePrecMat (size_t i1, size_t i2) const override
	Get the 2D precoding matrix.
void	Init () override
	Initialize the codebook parameters after construction, based on attribute values.
Public Member Functions inherited from ns3::NrCbTypeOne
size_t	GetNumI1 () const
	Get number of i1 values.
size_t	GetNumI2 () const
	Get number of i2 values.

Static Public Member Functions
static TypeId	GetTypeId ()
	Get TypeId.
Static Public Member Functions inherited from ns3::NrCbTypeOne
static TypeId	GetTypeId ()
	Get TypeId.

Additional Inherited Members
Protected Attributes inherited from ns3::NrCbTypeOne
bool	m_isDualPol {NR_CB_TYPE_ONE_INIT_POL}
	3GPP n1-n2 config (num vert gNB ports)
size_t	m_n1 {NR_CB_TYPE_ONE_INIT_N1}
size_t	m_n2 {NR_CB_TYPE_ONE_INIT_N2}
	3GPP n1-n2 config (num horiz gNB ports)
size_t	m_nPorts {NR_CB_TYPE_ONE_INIT_NPORTS}
	Number of possible subband indices (i2)
size_t	m_numI1 {NR_CB_TYPE_ONE_INIT_NI1}
	Number of MIMO layers.
size_t	m_numI2 {NR_CB_TYPE_ONE_INIT_NI2}
	Number of possible wideband indices (i1)
uint8_t	m_rank {NR_CB_TYPE_ONE_INIT_RANK}
	Defines if gNB antennas are dual-polarized.

Detailed Description

Implementation of the two-port codebook in 3GPP TS 38.214 This class implements a codebook for a gNB with at most 2 antenna ports. For a single port, it returns single-element matrix with value 1.0. For two ports, it implements Table 5.2.2.2.1-1: Codebooks for 1-layer and 2-layer CSI reporting using antenna ports 3000 to 3001. There is a slight abuse of notation: For the "codebook index", the i2 index of other Type-I codebooks is used, and the i1 index remains unused.

Introspection did not find any typical Config paths.
No Attributes are defined for this type.

Attributes defined in parent class ns3::NrCbTypeOne

• N1: N1 (number of horizontal ports at the gNB)
  • Set with class: ns3::UintegerValue
  • Underlying type: uint8_t 0:255
  • Initial value: 1
  • Flags: construct write read
• N2: N2 (number of vertical ports at the gNB)
  • Set with class: ns3::UintegerValue
  • Underlying type: uint8_t 0:255
  • Initial value: 1
  • Flags: construct write read
• IsDualPol: True if the gNB antennas are dual-polarized
  • Set with class: ns3::BooleanValue
  • Underlying type: bool
  • Initial value: false
  • Flags: construct write read
• Rank: Rank (number of MIMO layers)
  • Set with class: ns3::UintegerValue
  • Underlying type: uint8_t 0:255
  • Initial value: 1
  • Flags: construct write read

No TraceSources are defined for this type.
Size of this type is 104 bytes (on a 64-bit architecture).

Definition at line 18 of file nr-cb-two-port.h.

Member Function Documentation

GetBasePrecMat()

ComplexMatrixArray ns3::NrCbTwoPort::GetBasePrecMat ( size_t  i1, size_t  i2  ) const

overridevirtual

Get the 2D precoding matrix.

Parameters

i1	the index of the wideband precoding (always 0 for this codebook)
i2	the index of the subband precoding (the "codebook index" in Table 5.2.2.2.1-1)

Returns

the precoding matrix of size m_nPorts x m_rank

Implements ns3::NrCbTypeOne.

Definition at line 34 of file nr-cb-two-port.cc.

References ns3::NrCbTypeOne::m_nPorts, ns3::NrCbTypeOne::m_numI1, ns3::NrCbTypeOne::m_numI2, and ns3::NrCbTypeOne::m_rank.

GetTypeId()

TypeId ns3::NrCbTwoPort::GetTypeId ( )

static

Get TypeId.

Returns

the TypeId

Definition at line 14 of file nr-cb-two-port.cc.

Referenced by ns3::NrPmSearchFull::GetTypeId().

Here is the caller graph for this function:

Init()

void ns3::NrCbTwoPort::Init ( )

overridevirtual

Initialize the codebook parameters after construction, based on attribute values.

Implements ns3::NrCbTypeOne.

Definition at line 22 of file nr-cb-two-port.cc.

References ns3::NrCbTypeOne::m_isDualPol, ns3::NrCbTypeOne::m_n2, ns3::NrCbTypeOne::m_nPorts, ns3::NrCbTypeOne::m_numI1, ns3::NrCbTypeOne::m_numI2, and ns3::NrCbTypeOne::m_rank.

---

The documentation for this class was generated from the following files:

• nr-cb-two-port.h
• nr-cb-two-port.cc