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4b94481ecb
The option is only set for gnpy-transmission-main. The spectrum file is a list of of spectrum objects, each defining fmin, fmax and spectrum attributes using the same definition as SI in eqpt_config.json. the object list should be contiguous spectrum definitions and not overlapping. For now, I have not integrated the possibility to directly use transceivers type and mode in the list. user can define sets of contiguous channels and a label to identify the spectrum bands. If no label are defined, th program justs uses the index + baud rate of the spectrum bands as label. Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com> Change-Id: Ibc01e59e461e5e933e95d23dacbc5289e275ccf7
73 lines
3.3 KiB
Python
73 lines
3.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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'''
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gnpy.core.equipment
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===================
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This module contains functionality for specifying equipment.
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'''
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from gnpy.core.utils import automatic_nch, db2lin
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from gnpy.core.exceptions import EquipmentConfigError
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def trx_mode_params(equipment, trx_type_variety='', trx_mode='', error_message=False):
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"""return the trx and SI parameters from eqpt_config for a given type_variety and mode (ie format)"""
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trx_params = {}
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default_si_data = equipment['SI']['default']
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try:
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trxs = equipment['Transceiver']
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# if called from path_requests_run.py, trx_mode is filled with None when not specified by user
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# if called from transmission_main.py, trx_mode is ''
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if trx_mode is not None:
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mode_params = next(mode for trx in trxs
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if trx == trx_type_variety
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for mode in trxs[trx].mode
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if mode['format'] == trx_mode)
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trx_params = {**mode_params}
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# sanity check: spacing baudrate must be smaller than min spacing
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if trx_params['baud_rate'] > trx_params['min_spacing']:
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raise EquipmentConfigError(f'Inconsistency in equipment library:\n Transpoder "{trx_type_variety}" mode "{trx_params["format"]}" ' +
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f'has baud rate {trx_params["baud_rate"]*1e-9} GHz greater than min_spacing {trx_params["min_spacing"]*1e-9}.')
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else:
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mode_params = {"format": "undetermined",
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"baud_rate": None,
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"OSNR": None,
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"bit_rate": None,
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"roll_off": None,
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"tx_osnr": None,
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"min_spacing": None,
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"cost": None}
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trx_params = {**mode_params}
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trx_params['f_min'] = equipment['Transceiver'][trx_type_variety].frequency['min']
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trx_params['f_max'] = equipment['Transceiver'][trx_type_variety].frequency['max']
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# TODO: novel automatic feature maybe unwanted if spacing is specified
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# trx_params['spacing'] = _automatic_spacing(trx_params['baud_rate'])
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# temp = trx_params['spacing']
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# print(f'spacing {temp}')
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except StopIteration:
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if error_message:
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raise EquipmentConfigError(f'Could not find transponder "{trx_type_variety}" with mode "{trx_mode}" in equipment library')
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else:
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# default transponder charcteristics
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# mainly used with transmission_main_example.py
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trx_params['f_min'] = default_si_data.f_min
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trx_params['f_max'] = default_si_data.f_max
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trx_params['baud_rate'] = default_si_data.baud_rate
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trx_params['spacing'] = default_si_data.spacing
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trx_params['OSNR'] = None
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trx_params['bit_rate'] = None
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trx_params['cost'] = None
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trx_params['roll_off'] = default_si_data.roll_off
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trx_params['tx_osnr'] = default_si_data.tx_osnr
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trx_params['min_spacing'] = None
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nch = automatic_nch(trx_params['f_min'], trx_params['f_max'], trx_params['spacing'])
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trx_params['nb_channel'] = nch
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trx_params['power'] = db2lin(default_si_data.power_dbm) * 1e-3
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return trx_params
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