Source code for hermespy.simulation.isolation.perfect

# -*- coding: utf-8 -*-

from __future__ import annotations

from hermespy.core import FloatingError, Serializable, Signal
from .isolation import Isolation

__author__ = "Jan Adler"
__copyright__ = "Copyright 2024, Barkhausen Institut gGmbH"
__credits__ = ["Jan Adler"]
__license__ = "AGPLv3"
__version__ = "1.4.0"
__maintainer__ = "Jan Adler"
__email__ = "jan.adler@barkhauseninstitut.org"
__status__ = "Prototype"




class PerfectIsolation(Serializable, Isolation):
    """Perfect isolation model without leakage between RF chains."""

    yaml_tag = "PerfectIsolation"



    def leak(self, signal: Signal | None) -> Signal:
        if self.device is None:
            raise FloatingError("Error trying to simulate leakage of a floating model")

        if signal is None:
            return self._leak(None)

        if self.device.antennas.num_transmit_ports != signal.num_streams:
            raise ValueError(
                "Number of signal streams ({signal.num_streams}) does not match the number of transmitting antenna ports ({self.device.antennas.num_transmit_ports})"
            )

        return self._leak(signal)


    def _leak(self, signal: Signal | None) -> Signal:
        if signal is None:
            return Signal.Empty(
                self.device.sampling_rate,
                self.device.antennas.num_receive_antennas,
                carrier_frequency=self.device.carrier_frequency,
            )

        else:
            return Signal.Empty(
                signal.sampling_rate,
                self.device.antennas.num_receive_antennas,
                carrier_frequency=signal.carrier_frequency,
            )