Field Detail

• protected int channels

  Number of channels.

• protected float fs

  Sampling frequency (Hz), -1 if unknown.

• protected int preamble

  Preamble identifier.

• protected float[] signal

  Signal time series. For complex signals, real and imaginary parts are in consecutive floats. Multi-channel signals are interleaved.

Property Detail

• int channels

• float fc

• float fs

• int preamble

• float[] signal

• float[] signal

Constructor Detail

• public BasebandSignal()

• public BasebandSignal(org.arl.fjage.Performative perf)

• public BasebandSignal(org.arl.fjage.AgentID aid, org.arl.fjage.Performative perf)

• public BasebandSignal(org.arl.fjage.Message inReplyTo, org.arl.fjage.Performative perf)

Method Detail

• public int getChannels()

  Gets the number of channels.

  Returns:

  ch number of channels

• public float getFc()

  Gets the carrier frequency for the passband signal represented by this baseband signal. If the carrier frequency is 0, then the signal represented here is passband real.

  Returns:

  carrier frequency in Hz

• public float getFs()

  Gets the sampling rate of the signal.

  Returns:

  sampling rate in Hz

• public int getPreamble()

  Gets the preamble identifier. For a transmission request, this is the detection preamble to add to the signal before transmission. A preamble id of 0 causes no preamble to be added. For a reception request, this is the id of the preamble that was detected.

  Returns:

  preamble identifier

• public float[] getSignal()

  Gets the signal contents as an array of floats. If the signal is complex, alternate entries as real and imaginary. If the signal has multiple channels, the channel data is interleaved.

  Returns:

  an array of floats

• public float[] getSignal(int ch)

  Gets the signal for a given channel. If the signal is complex, alternate entries as real and imaginary.

  Parameters:

  ch - channel number (base 1)

  Returns:

  signal for the channel

• public java.lang.String getSignalAsBase64()

  Gets a base64 representation of the baseband signal.

  Returns:

  base64 string

• public int getSignalLength()

  Gets the signal length per channel in samples.

  Returns:

  signal length in samples

• public boolean isComplex()

  Checks if the signal is complex or real. Baseband signals are complex, while passband signals (carrierFrequency of 0) are real.

  Returns:

  true if complex, false if real

• public void setChannels(int ch)

  Sets the number of channels.

  Parameters:

  ch - number of channels

• public void setFc(float fc)

  Sets the carrier frequency for the passband signal represented by this baseband signal. If the carrier frequency is 0, then the signal represented here is passband real.

  Parameters:

  fc - carrier frequency in Hz

• public void setFs(float fs)

  Sets the sampling rate of the signal.

  Parameters:

  fs - sampling rate in Hz

• public void setPreamble(int n)

  Sets the preamble identifier (default is 0). For a transmission request, this is the detection preamble to add to the signal before transmission. A preamble id of 0 causes no preamble to be added. For a reception request, this is the id of the preamble that was detected.

  Parameters:

  n - preamble identifier

• public void setSignal(float[] signal)

  Sets the signal contents from an array of floats. If the signal is complex, the array must have an even number of floats with alternate entries as real and imaginary. If the signal has multiple channels, the array length must be an integer multiple of the number of channels, and the channel data is interleaved.

  Parameters:

  signal - array of floats

• public void setSignalFromBase64(java.lang.String s)

  Sets the signal from a base64 representation of the baseband signal.

  Parameters:

  s - base64 string

• @java.lang.Override public java.lang.String toString()