edu.cmu.emulator.signal
Class PathBasedFadingController

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

All Implemented Interfaces:

Runnable

public class PathBasedFadingController
extends Object
implements Runnable

Assumptions/requirements: - Not all channels are necessarily path-based - Any channel that is path-based will remain path-based for the duration of the emulation. - Path-based channels may switch channel models as long as they are always path-based and as long as the current DSP configuration has enough paths to support the model.

Field Summary

protected static int	channelI From the SignalEnvironment.
protected static int	channelQ
protected RWLock	channelsLock
protected CommSender	commSender
protected double[][]	curDelay
protected double[][][]	curLoss
private static boolean	debug
protected EmuHWConfiguration	emuHWConfig
protected double[][]	lastDelay
protected long	lastDelayTimeMillis
protected long	lastFadeTimeMillis
protected double[][][]	lastLoss
protected Logger	log
private static double	MAX_SCALE_DB
private static double	MIN_SCALE_DB
protected int	minFadeInterval
protected Channel[]	pbChannels List of path-based channels in the emulator.
protected PathBasedDSPConfiguration	pbDSPConfig
protected boolean	running
protected ScaleFactorWorker	scaleFactorWorker
protected double[]	txAmpGain
protected int	update

Constructor Summary

PathBasedFadingController(PathBasedDSPConfiguration pbDSPConfig, EmuHWConfiguration emuHWConfig, Channel[][] channels, RWLock channelsLock, CommSender commSender)

Method Summary

protected void	doDelay()
protected void	doFading()
double	getCurLoss(int channelN, int pathN, int IQ)
double	getExistingLoss(Channel channel)
ScaleFactorWorker	getScaleFactorWorker()
void	run()
void	start()
void	stop()
boolean	userActive() check user status.

Methods inherited from class java.lang.Object

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

Field Detail

pbChannels

protected Channel[] pbChannels

List of path-based channels in the emulator. As per our assumptions, these will be path-based for the duration of the emulation though the precise channel model used may change.

channelI

protected static int channelI

From the SignalEnvironment. channelsLock allows us to ensure that the channels don't change underneath us in the midst of working with the channels.

channelQ

protected static int channelQ

channelsLock

protected RWLock channelsLock

running

protected boolean running

minFadeInterval

protected int minFadeInterval

update

protected int update

lastLoss

protected double[][][] lastLoss

curLoss

protected double[][][] curLoss

lastDelay

protected double[][] lastDelay

curDelay

protected double[][] curDelay

txAmpGain

protected double[] txAmpGain

lastFadeTimeMillis

protected long lastFadeTimeMillis

lastDelayTimeMillis

protected long lastDelayTimeMillis

commSender

protected CommSender commSender

pbDSPConfig

protected PathBasedDSPConfiguration pbDSPConfig

emuHWConfig

protected EmuHWConfiguration emuHWConfig

scaleFactorWorker

protected ScaleFactorWorker scaleFactorWorker

MAX_SCALE_DB

private static final double MAX_SCALE_DB

See Also:

Constant Field Values

MIN_SCALE_DB

private static final double MIN_SCALE_DB

See Also:

Constant Field Values

debug

private static final boolean debug

See Also:

Constant Field Values

log

protected Logger log

Constructor Detail

PathBasedFadingController

public PathBasedFadingController(PathBasedDSPConfiguration pbDSPConfig,
                                 EmuHWConfiguration emuHWConfig,
                                 Channel[][] channels,
                                 RWLock channelsLock,
                                 CommSender commSender)

Method Detail

start

public void start()

stop

public void stop()

userActive

public boolean userActive()

check user status.

Returns:

True if user is active.

run

public void run()

Specified by:

run in interface Runnable

doDelay

protected void doDelay()
                throws Exception

Throws:

Exception

doFading

protected void doFading()
                 throws Exception

Throws:

Exception

getExistingLoss

public double getExistingLoss(Channel channel)

getScaleFactorWorker

public ScaleFactorWorker getScaleFactorWorker()

getCurLoss

public double getCurLoss(int channelN,
                         int pathN,
                         int IQ)