Guard Section#

class FrameGuardSection(duration, num_repetitions=1, frame=None)[source]#

Bases: FrameSection, Serializable

demodulate(baseband_signal)[source]#

Demodulate a time section of a complex OFDM base-band signal into data symbols.

Parameters:: signal (np.ndarray) – Vector of complex-valued base-band samples.
Return type:: ndarray

Returns: Sequence of demodulated data and reference symbols.

extract_channel(csi, reference_position)[source]#

Extract the channel state information relevant to this section given perfect CSI. :type csi: ndarray :param csi: Channel state information. :type csi: np.ndarray :type reference_position: ReferencePosition :param reference_position: Position of the reference within the OFDM grid. :type reference_position: ReferencePosition

Returns: Extracted channel state information.

Return type:: ndarray

modulate(symbols)[source]#

Modulate this section into a complex base-band signal.

Parameters:: symbols (np.ndarray) – The palced complex symbols encoded in this OFDM section. This includes both reference and data symbols to be transmitted.
Returns:: The modulated signal vector.
Return type:: np.ndarray

property duration: float#

Guard section duration in seconds.

Returns:: Duration in seconds.
Return type:: float

property num_samples: int#

Number of samples within this OFDM time-section.

Returns:: Number of samples
Return type:: int