edu.cmu.emulator.signal
Class RiceanFadingModel

java.lang.Object
  edu.cmu.emulator.signal.RiceanFadingModel

All Implemented Interfaces:

FadingModel, RSAListener

public class RiceanFadingModel
extends Object
implements FadingModel, RSAListener

Dummy Ricean fading model implementation. This should be replaced with a real implementation.

Field Summary

protected static int	channelI
protected static int	channelQ
protected Antenna	destAntenna
protected float[][]	fadingTable Table of fading factors.
protected static HashMap	fadingTableMap
static double	fcarrier_GHz
static double	FT_DURATION_SEC
static double	FT_RESOLUTION_SEC
protected int	ftOffset This instance's offset within the fading table.
protected double	k
protected static Logger	log
static double	MAX_SPEED_MPS
protected double	minSpeed
protected Path	path
static int	SIZE_FADING_TABLE
protected double	speed
protected Antenna	srcAntenna
static String	TYPE

Constructor Summary

protected	RiceanFadingModel() Constructor.
	RiceanFadingModel(double k, double minSpeed)
	RiceanFadingModel(double k, double minSpeed, long seed) Constructor for manual use.

Method Summary

protected static float[][]	createFadingTable(double K, int ftSize) Precompute the fading table.
protected static float[][]	getFadingTable(double k)
double	getK()
double	getLossI(Antenna a1, Antenna a2, long timeMillis) Calculate the current fading for this fading model instance at the time given.
double	getLossQ(Antenna a1, Antenna a2, long timeMillis) Calculate the current fading for this fading model instance at the time given.
double	getMinSpeed()
protected static float[][]	getOrCreateFadingTable(double k)
double	getSpeed()
String	getType()
void	initPathFading(Path path)
static void	main(String[] args)
void	newValue(RelSpatialAttribute rsAttrib, long timeMillis, Object value)
void	parseSubClass(Element fadingModelDef) Parse an XML definition for RiceanFadingModel.
void	stopPathFading(Path path)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

path

protected Path path

srcAntenna

protected Antenna srcAntenna

destAntenna

protected Antenna destAntenna

k

protected double k

minSpeed

protected double minSpeed

speed

protected double speed

fadingTable

protected float[][] fadingTable

Table of fading factors.

ftOffset

protected int ftOffset

This instance's offset within the fading table.

channelI

protected static int channelI

channelQ

protected static int channelQ

fadingTableMap

protected static HashMap fadingTableMap

TYPE

public static final String TYPE

See Also:

Constant Field Values

SIZE_FADING_TABLE

public static final int SIZE_FADING_TABLE

See Also:

Constant Field Values

MAX_SPEED_MPS

public static final double MAX_SPEED_MPS

See Also:

Constant Field Values

fcarrier_GHz

public static final double fcarrier_GHz

See Also:

Constant Field Values

FT_DURATION_SEC

public static double FT_DURATION_SEC

FT_RESOLUTION_SEC

public static double FT_RESOLUTION_SEC

log

protected static Logger log

Constructor Detail

RiceanFadingModel

protected RiceanFadingModel()

Constructor.

RiceanFadingModel

public RiceanFadingModel(double k,
                         double minSpeed,
                         long seed)

Constructor for manual use.

RiceanFadingModel

public RiceanFadingModel(double k,
                         double minSpeed)

Method Detail

createFadingTable

protected static float[][] createFadingTable(double K,
                                             int ftSize)

Precompute the fading table. After creation this table is read-only.

getOrCreateFadingTable

protected static float[][] getOrCreateFadingTable(double k)

getFadingTable

protected static float[][] getFadingTable(double k)

getType

public String getType()

Specified by:

getType in interface FadingModel

getK

public double getK()

Returns:

k

getSpeed

public double getSpeed()

Returns:

speed

getMinSpeed

public double getMinSpeed()

initPathFading

public void initPathFading(Path path)

Specified by:

initPathFading in interface FadingModel

stopPathFading

public void stopPathFading(Path path)

Specified by:

stopPathFading in interface FadingModel

newValue

public void newValue(RelSpatialAttribute rsAttrib,
                     long timeMillis,
                     Object value)

Specified by:

newValue in interface RSAListener

getLossI

public double getLossI(Antenna a1,
                       Antenna a2,
                       long timeMillis)

Calculate the current fading for this fading model instance at the time given.

Specified by:

getLossI in interface FadingModel

Parameters:

timeMillis - the time to calculate fading for

Returns:

the current fading loss (I)

getLossQ

public double getLossQ(Antenna a1,
                       Antenna a2,
                       long timeMillis)

Calculate the current fading for this fading model instance at the time given.

Specified by:

getLossQ in interface FadingModel

Parameters:

timeMillis - the time to calculate fading for

Returns:

the current fading loss (I)

parseSubClass

public void parseSubClass(Element fadingModelDef)

Parse an XML definition for RiceanFadingModel.

Specified by:

parseSubClass in interface FadingModel

Parameters:

fadingModelDef - the root XML element

main

public static void main(String[] args)