sdr.half_sine(sps: int, span: int = 1, norm: 'power' | 'energy' | 'passband' = 'energy') → NDArray[float64]

Returns a half-sine pulse shape.

Parameters:
sps: int

The number of samples per symbol.

span: int = 1

The length of the filter in symbols. The length of the filter is span * sps samples, but only the center sps samples are non-zero. The only reason for span to be larger than 1 is to add delay to the filter.

norm: 'power' | 'energy' | 'passband' = 'energy'

Indicates how to normalize the pulse shape.

  • "power": The pulse shape is normalized so that the maximum power is 1.

  • "energy": The pulse shape is normalized so that the total energy is 1.

  • "passband": The pulse shape is normalized so that the passband gain is 1.

Returns:

The half-sine pulse shape.

Examples

In [1]: h_half_sine = sdr.half_sine(10)

In [2]: plt.figure(); \
   ...: sdr.plot.impulse_response(h_half_sine);
   ...: 

In [3]: plt.figure(); \
   ...: sdr.plot.magnitude_response(h_half_sine);
   ...:
../../_images/sdr_half_sine_1.png ../../_images/sdr_half_sine_2.png

See the Pulse shapes example.