This test tests that the channel matrix is correctly generated when dual-polarized antennas are being used at TX and RX. More...

Inheritance diagram for ThreeGppMimoPolarizationTest:

Collaboration diagram for ThreeGppMimoPolarizationTest:

Public Member Functions
	ThreeGppMimoPolarizationTest (std::string testCaseName, Vector txLoc, const MimoPolarizationAntennaParams &txAntennaParams, Vector rxLoc, const MimoPolarizationAntennaParams &rxAntennaParams, std::valarray< std::complex< double >> testChannel, double tolerance)
	Constructor that receives MIMO polarization parameters of TX and RX devices. More...

	~ThreeGppMimoPolarizationTest () override
	Destructor. More...

Public Member Functions inherited from ns3::TestCase
	TestCase (const TestCase &)=delete

virtual	~TestCase ()
	Destructor. More...

std::string	GetName () const

TestCase &	operator= (const TestCase &)=delete

Private Member Functions
Ptr< PhasedArrayModel >	CreateAndConfigureAntenna (const MimoPolarizationAntennaParams &params)
	Function that can be used to configure the antenna using the set of parameters. More...

void	DoRun () override
	Build the test scenario. More...

Private Attributes
Vector	m_rxLoc
	Position of the RX device. More...

MimoPolarizationAntennaParams	m_rxParams
	Parameters used to configure the RX antenna array. More...

std::valarray< std::complex< double > >	m_testChannel
	The test value for the matrix representing the strongest cluster. More...

double	m_tolerance
	The tolerance to be used when comparing the channel matrix with the test matrix. More...

Vector	m_txLoc
	Position of the TX device. More...

MimoPolarizationAntennaParams	m_txParams
	Parameters used to configure the TX antenna array. More...

Additional Inherited Members
Public Types inherited from ns3::TestCase
enum	TestDuration { QUICK = 1 , EXTENSIVE = 2 , TAKES_FOREVER = 3 }
	How long the test takes to execute. More...

Protected Member Functions inherited from ns3::TestCase
	TestCase (std::string name)
	Constructor. More...

void	AddTestCase (TestCase *testCase, TestDuration duration=QUICK)
	Add an individual child TestCase to this test suite. More...

TestCase *	GetParent () const
	Get the parent of this TestCase. More...

bool	IsStatusFailure () const
	Check if any tests failed. More...

bool	IsStatusSuccess () const
	Check if all tests passed. More...

void	SetDataDir (std::string directory)
	Set the data directory where reference trace files can be found. More...

void	ReportTestFailure (std::string cond, std::string actual, std::string limit, std::string message, std::string file, int32_t line)
	Log the failure of this TestCase. More...

bool	MustAssertOnFailure () const
	Check if this run should assert on failure. More...

bool	MustContinueOnFailure () const
	Check if this run should continue on failure. More...

std::string	CreateDataDirFilename (std::string filename)
	Construct the full path to a file in the data directory. More...

std::string	CreateTempDirFilename (std::string filename)
	Construct the full path to a file in a temporary directory. More...

Detailed Description

This test tests that the channel matrix is correctly generated when dual-polarized antennas are being used at TX and RX.

In the conditions in which the channel between the TX and Rx device is LOS channel, and the beams of the transmitter and the receiver are pointing one towards the other, then in the presence of multiple ports at the TX and RX, and the antenna array at the TX and RX are dual polarized, the channel matrix should exhibit the strong symmetry between the two polarizations. E.g. if we have 1x2 antenna elements and two polarizations at both TX and RX, and the 1x2 ports at the TX and RX, then the channel matrix will have the structure as:

           ch00 ch01 |ch02 ch03

Hvv Hvh ch10 ch11 |ch12 ch13 = -----------------— Hhv Hhh ch20 ch21 |ch22 ch23 ch30 ch31 |ch32 ch33

We test different cases of the polarization slant angles of the TX and RX, e.g., 0, 30, 45, 90. In each of these setups we check if the channel matrix in its strongest cluster experiences strong symmetry, and if the values appear in pairs. We also test additional cases in which we change the bearing angle and the height of the TX. In these cases we also observe strong symmetry, with the difference that in these cases we can observe different values in the pairs. We can still observe strong impact of the dual polarization on the channel matrix.

Definition at line 1029 of file three-gpp-channel-test-suite.cc.

Constructor & Destructor Documentation

◆ ThreeGppMimoPolarizationTest()

ThreeGppMimoPolarizationTest::ThreeGppMimoPolarizationTest	(	std::string	testCaseName,
		Vector	txLoc,
		const MimoPolarizationAntennaParams &	txAntennaParams,
		Vector	rxLoc,
		const MimoPolarizationAntennaParams &	rxAntennaParams,
		std::valarray< std::complex< double >>	testChannel,
		double	tolerance
	)

Constructor that receives MIMO polarization parameters of TX and RX devices.

Parameters

testCaseName	the test case name
txLoc	the position of the transmitter
txAntennaParams	the antenna parameters of the transmitter
rxLoc	the position of the receiver
rxAntennaParams	the antenna parameters of the receiver
testChannel	the test matrix that represent the strongest cluster
tolerance	the tolerance to be used when testing