OFDM Waveform¶

class OFDMWaveform(grid_resources, grid_structure, num_subcarriers=1024, subcarrier_spacing=1000.0, dc_suppression=True, pilot_section=None, pilot_sequence=None, repeat_pilot_sequence=True, **kwargs)[source]¶

Bases: OrthogonalWaveform, Serializable

Generic Orthogonal Frequency Division Multiplexing waveform description.

Parameters:

grid_resources (Sequence[GridResource]) – Frequency-domain resource section configurations.
grid_structure (Sequence[GridSection]) – Time-domain frame configuration.
num_subcarriers (int) – Maximum number of assignable subcarriers. Unassigned subcarriers will be assumed to be zero. \(1024\) by default.
subcarrier_spacing (float) – Spacing between individual subcarriers in Hz. \(1~\mathrm{kHz}\) by default.
num_subcarriers – Maximum number of assignable subcarriers. Unassigned subcarriers will be assumed to be zero. \(1024\) by default.
dc_suppression (bool) – Suppress the direct current component during waveform generation. Enabled by default.
pilot_section (PilotSection | None) – Pilot section preceding the frame’s payload. If not specified, no dedicated pilot section will be generated.
pilot_sequence (PilotSymbolSequence | None) – Sequence of symbols used for the pilot section and reference symbols within the frame. If not specified, pseudo-random sequences will be generated from the set of data symbols.
**kwargs (Any) – Waveform generator base class initialization parameters. Refer to CommunicationWaveform for details.

serialize(process)[source]¶

Serialize this object’s state.

Objects cannot be serialized directly, instead a Factory must be instructed to carry out the serialization process.

Parameters:: process (SerializationProcess) – The current stage of the serialization process. This object is generated by the Factory and provides an interface to serialization methods supporting multiple backends.
Return type:: None

property bandwidth: float¶

Bandwidth of the frame generated by this generator.

Used to estimate the minimal sampling frequency required to adequately simulate the scenario.

Returns: Bandwidth in Hz.

dc_suppression: bool¶

property samples_per_frame: int¶: Number of time-domain samples per processed communication frame.

property sampling_rate: float¶

Rate at which the waveform generator signal is internally sampled.

Returns: Sampling rate in Hz.

property subcarrier_spacing: float¶

Subcarrier spacing between frames.

Returns:: Spacing in Hz.
Return type:: float