Transmitter

class Transmitter(seed=None, selected_transmit_ports=None, carrier_frequency=None)

Bases: Generic[TransmissionType], MixingOperator, RandomNode

Operator transmitting over a device.

Parameters:

• seed (int, optional) – Random seed used to initialize the pseudo-random number generator.

• selected_transmit_ports (Sequence[int] | None) – Indices of antenna ports selected for transmission from the operated Device's antenna array. If not specified, all available ports will be considered.

• carrier_frequency (float, optional) – Central frequency of the mixed signal in radio-frequency transmission band. If not specified, the operated device’s default carrier frequency will be assumed during signal processing.

add_transmit_callback(callback)

Add a callback to be called after processing the transmit DSP algorithm.

Parameters:

callback (Callable[[TransmissionType], None]) – Function to be called after processing the transmit DSP algorithm. The transmit output is passed as the only argument.

Return type:

Hook[TypeVar(TransmissionType, bound= Transmission)]

Returns: Hook to be used for removal.

transmit(state, duration=0.0, notify=True)

Transmit a signal.

Registers the signal samples to be transmitted by the underlying device.

Wrapper around the abstract _transmit method.

Parameters:

• state (DeviceState, optional) – State of the device at the time of transmission. If not specified, the device’s current state will be queried by calling hermespy.core.device.Device.state().

• duration (float, optional) – Duration of the transmitted signal. If not specified, i.e. zero, the duration will be inferred by the transmitter.

• notify (bool, optional) – Notify the transmitter’s callbacks about the generated transmission.

Return type:

TypeVar(TransmissionType, bound= Transmission)

Returns:

Information generated while transmitting over this operator.

Raises:

FloatingError – If the transmitter is currently considered floating.

abstract property power: float

Expected power of the transmitted signal in Watts.

Note

Applies only to the signal-carrying parts of the transmission, silent parts shuch as guard intervals should not be considered.

property selected_transmit_ports: Sequence[int] | None

Indices of antenna ports selected for transmission from the operated Device's antenna array.

If None, all available transmit ports will be considered.