The power delay profile returned by propagation models. More...

#include "uan-prop-model.h"

Collaboration diagram for ns3::UanPdp:

Public Types
typedef std::vector< Tap >::const_iterator	Iterator
	Convenience iterator typedef.

Public Member Functions
	UanPdp ()
	Create empty PDP object.

	UanPdp (std::vector< double > arrivals, Time resolution)
	Create PDP object from real valued arrival amplitudes.

	UanPdp (std::vector< std::complex< double > > arrivals, Time resolution)
	Create PDP object from vector of arrival amplitudes.

	UanPdp (std::vector< Tap > taps, Time resolution)
	Create PDP object from a vector of Tap objects.

	~UanPdp ()
	Dummy destructor, see DoDispose.

Iterator	GetBegin () const
	Get the beginning of the tap vector.

Iterator	GetEnd () const
	Get the end of the tap list (one beyond the last entry).

uint32_t	GetNTaps () const
	Get the number of taps.

Time	GetResolution () const
	Get the delay time resolution (time duration between arrivals).

const Tap &	GetTap (uint32_t i) const
	Get the Tap at the specified delay index.

UanPdp	NormalizeToSumNc () const
	Creates a new UanPdp normalized to its non coherent sum.

void	SetNTaps (uint32_t nTaps)
	Resize the tap vector.

void	SetResolution (Time resolution)
	Set the time duration (resolution) between arrivals.

void	SetTap (std::complex< double > arrival, uint32_t index)
	Set the arrival value for a tap.

std::complex< double >	SumTapsC (Time begin, Time end) const
	Compute the coherent sum of tap amplitudes between a start and end time.

std::complex< double >	SumTapsFromMaxC (Time delay, Time duration) const
	Compute the coherent sum of tap amplitudes starting after a delay from the maximum amplitude for a total duration.

double	SumTapsFromMaxNc (Time delay, Time duration) const
	Compute the non-coherent sum of tap amplitudes starting after a delay from the maximum amplitude for a total time duration.

double	SumTapsNc (Time begin, Time end) const
	Compute the non-coherent sum of tap amplitudes between a start and end time.

Static Public Member Functions
static UanPdp	CreateImpulsePdp ()
	Get a unit impulse PDP at time 0.

Private Attributes
Time	m_resolution
	The time resolution.

std::vector< Tap >	m_taps
	The vector of Taps.

Friends
std::ostream &	operator<< (std::ostream &os, const UanPdp &pdp)
	Writes PDP to stream as list of arrivals.

std::istream &	operator>> (std::istream &is, UanPdp &pdp)
	Reads in list of arrivals from stream is.

Detailed Description

The power delay profile returned by propagation models.

Container class to describe power delay profile returned from UAN propagation models using tapped delay line model. This should model a channel impulse response as a set of equally spaced signal arrivals.

Generally, the profile should be normalized, such that the sum of all taps should equal 1. The received signal power on any interval (t1, t2) can then be found from summing the taps on the interval and multiplying by the total received power at the receiver.

Definition at line 78 of file uan-prop-model.h.

Member Typedef Documentation

◆ Iterator

typedef std::vector<Tap>::const_iterator ns3::UanPdp::Iterator

Convenience iterator typedef.

Definition at line 84 of file uan-prop-model.h.

Constructor & Destructor Documentation

◆ UanPdp() [1/4]

ns3::UanPdp::UanPdp ( )

Create empty PDP object.

Definition at line 93 of file uan-prop-model.cc.

Referenced by NormalizeToSumNc().

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◆ UanPdp() [2/4]

ns3::UanPdp::UanPdp	(	std::vector< Tap >	taps,
		Time	resolution )

Create PDP object from a vector of Tap objects.

Parameters

taps	Taps to include in this PDP.
resolution	Resolution of PDP object.

Definition at line 97 of file uan-prop-model.cc.

◆ UanPdp() [3/4]

ns3::UanPdp::UanPdp	(	std::vector< std::complex< double > >	arrivals,
		Time	resolution )

Create PDP object from vector of arrival amplitudes.

Parameters

arrivals	Vector of complex amplitude arrivals.
resolution	Time duration between arrivals in vector.

Definition at line 103 of file uan-prop-model.cc.

References m_resolution, m_taps, and ns3::Seconds().

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◆ UanPdp() [4/4]

ns3::UanPdp::UanPdp	(	std::vector< double >	arrivals,
		Time	resolution )

Create PDP object from real valued arrival amplitudes.

Parameters

arrivals	Vector of real valued arrivals.
resolution	Time duration between arrivals in vector.

Definition at line 115 of file uan-prop-model.cc.

References m_resolution, m_taps, and ns3::Seconds().

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◆ ~UanPdp()

ns3::UanPdp::~UanPdp ( )

Dummy destructor, see DoDispose.

Definition at line 127 of file uan-prop-model.cc.

References m_taps.

Member Function Documentation

◆ CreateImpulsePdp()

UanPdp ns3::UanPdp::CreateImpulsePdp ( )

static

Get a unit impulse PDP at time 0.

Returns: The unit impulse.

Definition at line 348 of file uan-prop-model.cc.

References ns3::Seconds(), SetResolution(), and SetTap().

Referenced by ns3::UanPropModelIdeal::GetPdp(), and ns3::UanPropModelThorp::GetPdp().

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◆ GetBegin()

UanPdp::Iterator ns3::UanPdp::GetBegin ( ) const

Get the beginning of the tap vector.

Returns: Iterator positioned at first arrival.

Definition at line 164 of file uan-prop-model.cc.

References m_taps.

Referenced by ns3::UanPhyCalcSinrFhFsk::CalcSinrDb().

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◆ GetEnd()

UanPdp::Iterator ns3::UanPdp::GetEnd ( ) const

Get the end of the tap list (one beyond the last entry).

Returns: Iterator positioned after last arrival

Definition at line 170 of file uan-prop-model.cc.

References m_taps.

Referenced by ns3::UanPhyCalcSinrFhFsk::CalcSinrDb().

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◆ GetNTaps()

uint32_t ns3::UanPdp::GetNTaps ( ) const

Get the number of taps.

Returns: Number of taps in PDP.

Definition at line 176 of file uan-prop-model.cc.

References m_taps.

Referenced by GetTap(), NormalizeToSumNc(), SumTapsC(), SumTapsFromMaxC(), SumTapsFromMaxNc(), and SumTapsNc().

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◆ GetResolution()

Time ns3::UanPdp::GetResolution ( ) const

Get the delay time resolution (time duration between arrivals).

Returns: Resolution of PDP.

Definition at line 182 of file uan-prop-model.cc.

References m_resolution.

◆ GetTap()

const Tap & ns3::UanPdp::GetTap ( uint32_t i ) const

Get the Tap at the specified delay index.

Parameters

i	Index number of tap to return (0 based).

Returns: Tap object at index i.

Definition at line 145 of file uan-prop-model.cc.

References GetNTaps(), m_taps, and NS_ASSERT_MSG.

Referenced by ns3::UanPhyCalcSinrFhFsk::CalcSinrDb().

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◆ NormalizeToSumNc()

UanPdp ns3::UanPdp::NormalizeToSumNc ( ) const

Creates a new UanPdp normalized to its non coherent sum.

See also: SumTapsNc

Returns: the new PDP

Definition at line 329 of file uan-prop-model.cc.

References UanPdp(), GetNTaps(), m_resolution, and m_taps.

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◆ SetNTaps()

void ns3::UanPdp::SetNTaps ( uint32_t nTaps )

Resize the tap vector.

Parameters

nTaps Number of taps in this PDP

Definition at line 152 of file uan-prop-model.cc.

References m_taps.

◆ SetResolution()

void ns3::UanPdp::SetResolution ( Time resolution )

Set the time duration (resolution) between arrivals.

Parameters

resolution The resolution.

Definition at line 158 of file uan-prop-model.cc.

References m_resolution.

Referenced by CreateImpulsePdp().

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◆ SetTap()

void ns3::UanPdp::SetTap	(	std::complex< double >	arrival,
		uint32_t	index )

Set the arrival value for a tap.

The delay time is the index multiplied by the resolution. The tap vector will be expanded to accommodate the requested index.

Parameters

arrival	Complex arrival value.
index	Index of arrival.

Definition at line 133 of file uan-prop-model.cc.

References m_resolution, and m_taps.

Referenced by CreateImpulsePdp().

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◆ SumTapsC()

std::complex< double > ns3::UanPdp::SumTapsC	(	Time	begin,
		Time	end ) const

Compute the coherent sum of tap amplitudes between a start and end time.

Assuming that Tap at index 0 arrives at time 0, this function sums coherently (sums amplitude of arrivals considering phase difference) all arrivals between a start and end time.

Parameters

begin	Time value to begin summing arrivals.
end	Time value to end summing arrivals.

Returns: Coherent sum of arrivals between two time values.

Definition at line 297 of file uan-prop-model.cc.

References GetNTaps(), m_resolution, m_taps, NS_ASSERT_MSG, and ns3::Seconds().

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◆ SumTapsFromMaxC()

std::complex< double > ns3::UanPdp::SumTapsFromMaxC	(	Time	delay,
		Time	duration ) const

Compute the coherent sum of tap amplitudes starting after a delay from the maximum amplitude for a total duration.

this function sums coherently (sums amplitude of arrivals considering phase difference) all arrivals in a given duration starting the given time after the maximum amplitude arrival received

Parameters

delay	Time duratation after max to begin summing arrivals.
duration	Time duration to sum arrivals for.

Returns: Coherent sum of arrivals after max in given window.

Definition at line 188 of file uan-prop-model.cc.

References GetNTaps(), ns3::Time::IsZero(), m_resolution, m_taps, NS_ASSERT_MSG, and ns3::Seconds().

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◆ SumTapsFromMaxNc()

double ns3::UanPdp::SumTapsFromMaxNc	(	Time	delay,
		Time	duration ) const

Compute the non-coherent sum of tap amplitudes starting after a delay from the maximum amplitude for a total time duration.

This function sums non-coherently (sums amplitude of arrivals ignoring phase difference) all arrivals in a given duration starting the given time after the maximum amplitude arrival received.

Parameters

delay	Time duratation after max to begin summing arrivals.
duration	Time duration to sum arrivals for.

Returns: Non-coherent sum of arrivals after max in given window.

Definition at line 226 of file uan-prop-model.cc.

References GetNTaps(), ns3::Time::IsZero(), m_resolution, m_taps, NS_ASSERT_MSG, and ns3::Seconds().

Referenced by ns3::UanPhyCalcSinrFhFsk::CalcSinrDb().

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◆ SumTapsNc()

double ns3::UanPdp::SumTapsNc	(	Time	begin,
		Time	end ) const

Compute the non-coherent sum of tap amplitudes between a start and end time.

Assuming that Tap at index 0 arrives at time 0, this function sums non-coherently (sums amplitude of arrivals ignoring phase difference) all arrivals between a start and end time.

Parameters

begin	Time value to begin summing arrivals.
end	Time value to end summing arrivals.

Returns: Non-coherent sum of arrivals between two time values.

Definition at line 266 of file uan-prop-model.cc.

References GetNTaps(), m_resolution, m_taps, NS_ASSERT_MSG, and ns3::Seconds().

Referenced by ns3::UanPhyCalcSinrFhFsk::CalcSinrDb().

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Friends And Related Symbol Documentation

◆ operator<<

std::ostream & operator<<	(	std::ostream &	os,
		const UanPdp &	pdp )

friend

Writes PDP to stream as list of arrivals.

Parameters

os	The output stream.
pdp	The PDP.

Returns: The output stream.

Definition at line 19 of file uan-prop-model.cc.

◆ operator>>

std::istream & operator>>	(	std::istream &	is,
		UanPdp &	pdp )

friend

Reads in list of arrivals from stream is.

Parameters

is	The input stream.
pdp	The PDP variable to set.

Returns: The input stream.

Definition at line 34 of file uan-prop-model.cc.

Member Data Documentation

◆ m_resolution

Time ns3::UanPdp::m_resolution

private

The time resolution.

Definition at line 241 of file uan-prop-model.h.

Referenced by UanPdp(), UanPdp(), GetResolution(), NormalizeToSumNc(), SetResolution(), SetTap(), SumTapsC(), SumTapsFromMaxC(), SumTapsFromMaxNc(), and SumTapsNc().

◆ m_taps

std::vector<Tap> ns3::UanPdp::m_taps

private

The vector of Taps.

Definition at line 240 of file uan-prop-model.h.

Referenced by UanPdp(), UanPdp(), ~UanPdp(), GetBegin(), GetEnd(), GetNTaps(), GetTap(), NormalizeToSumNc(), SetNTaps(), SetTap(), SumTapsC(), SumTapsFromMaxC(), SumTapsFromMaxNc(), and SumTapsNc().

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

src/uan/model/uan-prop-model.h
src/uan/model/uan-prop-model.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ Iterator

Constructor & Destructor Documentation

◆ UanPdp() [1/4]

◆ UanPdp() [2/4]

◆ UanPdp() [3/4]

◆ UanPdp() [4/4]

◆ ~UanPdp()

Member Function Documentation

◆ CreateImpulsePdp()

◆ GetBegin()

◆ GetEnd()

◆ GetNTaps()

◆ GetResolution()

◆ GetTap()

◆ NormalizeToSumNc()

◆ SetNTaps()

◆ SetResolution()

◆ SetTap()

◆ SumTapsC()

◆ SumTapsFromMaxC()

◆ SumTapsFromMaxNc()

◆ SumTapsNc()

Friends And Related Symbol Documentation

◆ operator<<

◆ operator>>

Member Data Documentation

◆ m_resolution

◆ m_taps