MCLink Class Reference

#include <mclink.h>

Inheritance diagram for MCLink:

Collaboration diagram for MCLink:

Public Types
enum	ChState { NOT_DEFINED = 0 , GOOD = 1 , MEDIUM = 2 , BAD = 3 }

Public Member Functions
	MCLink ()
	MCLink (double ber_good, double ber_bad, double p_gb, double p_bg, double step_period, ChState ch_state=MCLink::GOOD)
virtual	~MCLink ()
virtual int	command (int, const char *const *)
virtual ChState	updateChState ()
ChState	getChState ()
virtual double	getBER ()

Protected Attributes
double	ber_good
double	ber_bad
double	p_gb
double	p_bg
double	last_update
double	step_period
ChState	ch_state

Detailed Description

MCLink class models the BER of a directed link between two nodes.

The base class allows for GOOD/BAD channel states only, while the extended McLinkExtended class allows for MEDIUM state as well. Every state is associated with a different channel BER and every step_period the state is updated according to the transition probabilities.

Definition at line 52 of file mclink.h.

Member Enumeration Documentation

ChState

enum MCLink::ChState

Channel state.

Enumerator
NOT_DEFINED
GOOD
MEDIUM
BAD

Definition at line 58 of file mclink.h.

Constructor & Destructor Documentation

MCLink() [1/2]

MCLink::MCLink

(

)

Default constructor of MCLink class.

Definition at line 45 of file mclink.cpp.

MCLink() [2/2]

MCLink::MCLink	(	double	ber_good,
		double	ber_bad,
		double	p_gb,
		double	p_bg,
		double	step_period,
		ChState	ch_state = MCLink::GOOD
	)

Constructor of MCLink class.

Parameters

ber_good	BER with channel in GOOD state
ber_bad	BER with channel in BAD state
p_gb	Probability of transition from GOOD to BAD in one step
p_bg	Probability of transition from BAD to GOOD in one step
step_period	period (s) for channel transition between states
ch_state	Optional (default = GOOD) initial channel state

Returns

a new MCLink object

Definition at line 57 of file mclink.cpp.

~MCLink()

virtual MCLink::~MCLink ( )

inlinevirtual

Default destructor of MCLink class.

Definition at line 83 of file mclink.h.

Member Function Documentation

command()

int MCLink::command ( int  argc, const char *const *  argv  )

virtual

TCL command interpreter.

It implements the following OTcl methods:

Parameters

argc	Number of arguments in argv.
argv	Array of strings which are the command parameters (Note that argv[0] is the name of the object).

Returns

TCL_OK or TCL_ERROR whether the command has been dispatched successfully or not.

Reimplemented in MCLinkExtended.

Definition at line 110 of file mclink.cpp.

getBER()

double MCLink::getBER ( )

virtual

Returns

BER with current (updated) channel state

Reimplemented in MCLinkExtended.

Definition at line 99 of file mclink.cpp.

getChState()

ChState MCLink::getChState ( )

inline

Returns

current (updated) channel state

Definition at line 111 of file mclink.h.

updateChState()

MCLink::ChState MCLink::updateChState ( )

virtual

Called upon packet reception, decides and returns the new channel state updates the members state and last_step.

Parameters

curr_step

current step number at packet arrival

Returns

the channel state at curr_step as MCLink::{GOOD | BAD}

Reimplemented in MCLinkExtended.

Definition at line 73 of file mclink.cpp.

Member Data Documentation

ber_bad

double MCLink::ber_bad

protected

BER with bad channel.

Definition at line 126 of file mclink.h.

ber_good

double MCLink::ber_good

protected

BER with good channel.

Definition at line 125 of file mclink.h.

ch_state

ChState MCLink::ch_state

protected

last channel state

Definition at line 131 of file mclink.h.

last_update

double MCLink::last_update

protected

last time channel state has been updated

Definition at line 129 of file mclink.h.

p_bg

double MCLink::p_bg

protected

Prob of transition from bad to good channel.

Definition at line 128 of file mclink.h.

p_gb

double MCLink::p_gb

protected

Prob of transition from good to bad channel.

Definition at line 127 of file mclink.h.

step_period

double MCLink::step_period

protected

period (s) for channel transition between states

Definition at line 130 of file mclink.h.

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

• mclink.h
• mclink.cpp