MATLAB_optisystem_cosimulation.m

%% This m-file shows how to generate data in MATLAB , pass it through optisystem and configure simulation parameters 
%-----------------------------------------------
clc
close all
clear all
%-----------------------------------------------
%%
N=256;%number of bits
numberOfSamplesPerBit = 4;
bitRate               = 10E9;
sampleRate = bitRate * numberOfSamplesPerBit;
tx_power           = 0; % in dBm
number_of_frames=1;
%%
%---------------------initialization-------------
for frame=1:number_of_frames
    
    data(frame,:)=randint(1,N);%generating bits
    
    % Converting to samples
    transmittedSamples = transpose(rectpulse( data.', numberOfSamplesPerBit ));
    % adding the time base vector where sample to sample differnce is the
    % sample time
    transmitterTimeVector = transpose( ( 0 : length( transmittedSamples ) - 1 ) / sampleRate );
    %Saving the samples in a specified folder to be transmitted to
    %optisystem- so plz change the path to your folder path
    concatenatedTime_TransmittedSamples = [ transmitterTimeVector transmittedSamples(1,:).' ];
    save 'D:\Optisystem Assignment_2017\MATLAB Optisystem cosimulation\transmittedSamples1.dat' concatenatedTime_TransmittedSamples -ascii
    
    %--------------------------------------------------------------------------
    % Starting the OptiSystem Software
    %--------------------------------------------------------------------------
    
    % create a COM server running OptiSystem
    optsys = actxserver('optisystem.application');
    
    % This pause is necessary to allow OptiSystem to be opened before
    % call open the project
    pause(10);
    
    % Open the OptiSystem file defined by the path
    optsys.Open('D:\Optisystem Assignment_2017\MATLAB Optisystem cosimulation\MATLAB_optisystem_cosimulation.osd');
    % Specify and define the parameters that will be varied in the project
    %---------------------------------------------------------------------
    
    
    Document        = optsys.GetActiveDocument;
    LayoutMngr      = Document.GetLayoutMgr;
    CurrentLyt      = LayoutMngr.GetCurrentLayout;
    Canvas          = CurrentLyt.GetCurrentCanvas;
    
    %% setting bitrate, samples perbit, and frame length
    CurrentLyt.SetParameterValue( 'Bit rate', bitRate)
    CurrentLyt.SetParameterValue( 'Sequence length',N)
    CurrentLyt.SetParameterValue( 'Samples per bit', numberOfSamplesPerBit)
    
    
    %%
    %---------------------setting component parameters
    %% Setting pulse generators to generate the data files you already saved before
    pulseGenerator = Canvas.GetComponentByName('Measured Pulse Sequence');
    pulseGenerator.SetParameterValue( 'Filename', 'D:\Optisystem Assignment_2017\MATLAB Optisystem cosimulation\transmittedSamples1.dat' );
   
    
    %% setting power of laser to the power you want as an example
    CWlaser        = Canvas.GetComponentByName('CW Laser');
    CWlaser.SetParameterValue( 'Power', tx_power );
%     
      
 
    %%
    %% Run the project
    %-----------------
    
    Document.CalculateProject( true , true);
    %% return to matlab
    %% loading the signal saved by the matlab component in the optisystem,
    %% so you must change the path of matlab component in optisystem.
    %% note that the signal is a strucure that contains signal, noise, time
    %% vector so you must choose signal as follows:
    load signal
    received_signal(frame,:)=InputPort1.Sampled.Signal+InputPort1.Noise.Signal;
    
    %% closing optisystem
    optsys.Quit;
    pause(10)
    
    
    
end

% Now you are required to calculate BER at the optimum sampling time