Property Detail

• float[] signal

Constructor Detail

• public Preamble()

  Create a preamble with an empty user-defined signal.

• public Preamble(float[] signal)

  Create a preamble with a user-defined signal.

  Parameters:

  signal - baseband signal in I, Q format

• protected Preamble(int type, int sps, int len, float[] signal, float fc)

Method Detail

• public boolean equals(Preamble pre)

• public static Preamble getNone()

  Create a preamble with an empty user-defined signal.

  Returns:

  preamble object

• public float[] getSignal()

  Gets the user-defined signal.

  Returns:

  baseband signal in I, Q format

• public static Preamble hfmDownSweep(int len)

  Create a preamble with a hyperbolic frequency modulated down-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  Returns:

  preamble object

• public static Preamble hfmDownSweep(int len, int sps)

  Create a preamble with a hyperbolic frequency modulated down-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  sps - number of samples per symbol

  Returns:

  preamble object

• public static Preamble hfmDownSweep(int len, int sps, float fc)

  Create a preamble with a hyperbolic frequency modulated down-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  sps - number of samples per symbol

  fc - normalized relative carrier frequency (0 = baseband carrier, normalized by baseband sampling rate)

  Returns:

  preamble object

• public static Preamble hfmUpSweep(int len)

  Create a preamble with a hyperbolic frequency modulated up-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  Returns:

  preamble object

• public static Preamble hfmUpSweep(int len, int sps)

  Create a preamble with a hyperbolic frequency modulated up-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  sps - number of samples per symbol

  Returns:

  preamble object

• public static Preamble hfmUpSweep(int len, int sps, float fc)

  Create a preamble with a hyperbolic frequency modulated up-sweep.

  Parameters:

  len - length of the sweep in baseband samples

  sps - number of samples per symbol

  fc - normalized relative carrier frequency (0 = baseband carrier, normalized by baseband sampling rate)

  Returns:

  preamble object

• public static Preamble janus()

  Create a JANUS preamble.

  Returns:

  preamble object

• public static Preamble mseq(int len)

  Create a preamble with a m-sequence.

  Parameters:

  len - length of the m-sequence in baseband samples

  Returns:

  preamble object

• public static Preamble mseq(int len, int sps)

  Create a preamble with a m-sequence.

  Parameters:

  len - length of the m-sequence in baseband samples

  sps - number of samples per symbol

  Returns:

  preamble object

• public static Preamble mseq(int len, int sps, float fc)

  Create a preamble with a m-sequence.

  Parameters:

  len - length of the m-sequence in baseband samples

  sps - number of samples per symbol

  fc - normalized relative carrier frequency (0 = baseband carrier, normalized by baseband sampling rate)

  Returns:

  preamble object

• public static Preamble none()

  Create a preamble with an empty user-defined signal.

  Returns:

  preamble object

• public void setSignal(float[] signal)

  Sets a user-defined signal.

  Parameters:

  signal - baseband signal in I, Q format

• public String toInitString()

  Creates a Java-like string representation of the preamble.

  Returns:

  Java code to recreate the object

• @Override public String toString()