VLC channel simulator in Python

This folder contains a large part of the channel simulator for a VLC (Visible Light Communication) channel simulator in Python. It This simulator was partially based on the MATLAB channel model developed in: Ghassemlooy, Z., Popoola, W., & Rajbhandari, S. (2019). Optical wireless communications: system and channel modelling with Matlab®. CRC press.

This simulator studies various study cases in the following scenarios:

• Bus shelter
• Street lamp
• Industrial lighting
• Impulse response
• 4-transmitter system

The "BUS_STATION_simul_python" folder contains three pieces of code

The radiation pattern assumed in this code is the Lambertian LED emitter.

• Main_Bus_Smoke" contains the main code defining the various scenario parameters.
• fAttenuationsBus_Smoke" are the functions used to calculate the presence of smoke or fog and return the parameters to "Main".
• Plot_levelcurve_Bus_Smoke" contains all the functions for displaying the results. There are also save and display functions.

The "ON_HOUSE_simul_python" folder contains four pieces of code

The radiation pattern assumed in this code is a NIKKON S MURA streetlight, whose IES (Illuminating Engineering Society) file was included.

• On_house_pattern" displays the IES file, which has been processed beforehand and is found in the form of the Z vector in the code.
• Main_House_Smoke" contains the main code defining the various scenario parameters.
• fAttenuationsHouse_Smoke" are the functions used to calculate the presence of smoke or fog and return the parameters to "Main".
• Plot_levelcurve_House_Smoke" contains all the functions for displaying the results. There are also save and display functions.

The "Pattern_industry" folder contains two files.

The radiation pattern assumed in this code is a CoreLine Highbay LED from Philips Lighting, whose IES (Illuminating Engineering Society) file was included.

• Industry_pattern" processes the test_indus.txt file to display it and calculate the optical power distribution in a plane. I recommend playing the code by section.
• test_indus.txt uses the coefficients present in the original IES file.

The "Rep_imp_bus" file contains two pieces of code

• Rep_imp_bus_station" introduces the scenario's main parameters and displays the curves and impulse response of the system under study. It separates and joins the contributions from smoke and fog.
• fAttenuations_Gl" is the set of functions used to calculate the attenuation for fog and smoke.

The "4_emitters_single_receiver_LOS" code displays the optical power distribution when 4 transmitters are present in the room.