optic.dsp.synchronization.syncDataSequences

syncDataSequences(rx, tx, param)

Synchronize data sequences with a given reference sequence.

Parameters:

• rx (np.array) – Received signal.

• tx (np.array) – Reference signal (or symbols).

• param (optic.utils.parameters object, optional) –

  Parameters of the synchronization process.

  • param.SpS : samples per symbol of the received signal. [default: 1]

  • param.reference : type of reference used for synchronization (‘signal’,’symbols’) [default: ‘signal’]

  • param.syncMode : use either the real part or the amplitude of the signal to syncronize [detault: ‘amp’]

  • param.pulseType : type of pulse shaping filter. [default: ‘rrc’]

  • param.rollOff : rolloff of RRC filter. [default: 0.01]

  • param.nFilterTaps : number of filter coefficients. [default: 1024]

  • param.constType : type of constellation [Default: ‘pam’]

  • param.M : modulation order. [default: 4]

Returns:

• tx_ (np.array) – Synchronized transmitted signal.

• symb (np.array) – Detected transmitted symbols.

Notes

• Signals rx and tx must have the same number of columns (modes).

• If param.reference is set to ‘signal’, rx and tx should be sampled at the same rate.