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start implementation of class based simulation of a IM/DD communication system. Mostly based on Move-It but cleaned up and with focus on direct detection, however I try to keep the versatility of move-it alive.

Classes/Signal.m

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+classdef Signal
+    %SIGNAL Summary of this class goes here
+    %   Detailed explanation goes here
+    
+    properties
+        signal
+        fsym
+        fsimu
+    end
+    
+    methods
+        function obj = Signal(signal, fsym, fsimu)
+            %SIGNAL Construct an instance of this class
+            %   Detailed explanation goes here
+            obj.signal = signal;
+            
+            obj.fsym = fsym;
+            obj.fsimu = fsimu;
+
+        end
+
+        function [e_sig, nase, lambda_nm] = Electricalsignal(obj)
+
+            if isa(obj,'Opticalsignal')
+                %convert to electrical
+                disp("Convert signal: opt. -> elec. Fetch all properties (e.g. nase)!");
+                nase = obj.nase;
+                lambda_nm = obj.lambda_nm;
+                e_sig = Electricalsignal(obj.signal,obj.fsym, obj.fsimu);
+            end
+            
+        end
+
+        function o_sig = Opticalsignal(obj)
+            if isa(obj,'Electricalsignal')
+                %convert to optical
+                disp("Convert signal: elec. -> opt.!");
+                o_sig = Opticalsignal(obj.signal,obj.fsym, obj.fsimu);
+            end
+        end
+
+        function outputArg = method1(obj,inputArg)
+
+        end
+
+    end
+end
+