From a8daf12b20c99c121e35edaefcaa10e41f07a3b2 Mon Sep 17 00:00:00 2001
From: magf <magf@tf.uni-kiel.de>
Date: Mon, 2 Feb 2026 10:15:07 +0100
Subject: [PATCH] Added: - Class folder 'Timing Recovery' with different
 methods - Minimal example for the timing recovery in the FSO folder - New
 evaluation scripts for FSO data

---
 Classes/00_signals/Signal.m       | 11 +++++--
 Classes/01_transmit/Pulseformer.m |  1 +
 Classes/04_DSP/Timing_Recovery.m  | 49 -------------------------------
 3 files changed, 10 insertions(+), 51 deletions(-)
 delete mode 100644 Classes/04_DSP/Timing_Recovery.m

diff --git a/Classes/00_signals/Signal.m b/Classes/00_signals/Signal.m
index 3356196..e06c41f 100644
--- a/Classes/00_signals/Signal.m
+++ b/Classes/00_signals/Signal.m
@@ -482,6 +482,11 @@ classdef Signal
             yticks(round(linspace(y_min, y_max, min(10, max(4, ceil(y_range/10))))));
             end
             grid on;
+            
+            % Add legend if not already present
+            if isempty(get(gca, 'Legend'))
+                legend;
+            end
 
 
         end
@@ -924,7 +929,7 @@ classdef Signal
                 options.displayname = "";
             end
 
-            mode = 1;
+            mode = 2;
 
             histpoints = 2048;                                              %% verticale resolution
             histpoints = floor(histpoints/2)*2+1;                           %% to have the eye digram centered around one point make the vertical resolution uneven
@@ -965,7 +970,9 @@ classdef Signal
                     hold on
                     plot(eye_mat(:,n),'LineStyle',':','LineWidth',0.1,'Color',col(2,:));
                 end
-                ylabel('Amplitude of Signal');
+                xlabel('Samples','Interpreter','latex')
+                ylabel('Amplitude of Signal','Interpreter','latex');
+                xlim([0 histpoints_horizontal])
 
             elseif mode == 1
                 % generate eye diagram using histogram
diff --git a/Classes/01_transmit/Pulseformer.m b/Classes/01_transmit/Pulseformer.m
index d137924..ebd0409 100644
--- a/Classes/01_transmit/Pulseformer.m
+++ b/Classes/01_transmit/Pulseformer.m
@@ -99,6 +99,7 @@ function data_out = process_(obj, data_in_signal)
     % For your setup (powers of 2), it will likely be integer.
     racos_len = obj.pulselength; % span in symbols
     h = rcosdesign(obj.alpha, racos_len, sps_filter, filtertype);
+    % h = gaussdesign(obj.alpha, racos_len, sps_filter);
 
     % Matched Filter Flip (Complex Conjugate Time Reversal)
     if obj.matched
diff --git a/Classes/04_DSP/Timing_Recovery.m b/Classes/04_DSP/Timing_Recovery.m
deleted file mode 100644
index 3999ad7..0000000
--- a/Classes/04_DSP/Timing_Recovery.m
+++ /dev/null
@@ -1,49 +0,0 @@
-classdef Timing_Recovery < handle
-
-    properties(Access=public)
-        modulation
-        timing_error_detector
-        sps
-        damping_factor
-        normalized_loop_bandwidth
-        detector_gain
-    end
-
-    methods(Access=public)
-        function obj = Timing_Recovery(options)
-            arguments(Input)
-
-                options.modulation = 'PAM/PSK/QAM';
-                options.timing_error_detector = 'Gardner (non-data-aided)';
-                options.sps = 2;
-                options.damping_factor = 1.0;
-                options.normalized_loop_bandwidth = 0.01;
-                options.detector_gain = 2.7;
-
-            end
-
-            fn = fieldnames(options);
-            for n = 1:numel(fn)
-                obj.(fn{n}) = options.(fn{n});
-            end
-
-            %obj-Initialization here%
-
-        end
-
-        function [data_out, timing_error] = process(obj, data_in)
-
-            timing_synchronization = comm.SymbolSynchronizer( ...
-                "Modulation",          obj.modulation,...
-                "TimingErrorDetector", obj.timing_error_detector, ...
-                "SamplesPerSymbol",    obj.sps, ...
-                "DampingFactor",       obj.damping_factor, ...
-                "NormalizedLoopBandwidth", obj.normalized_loop_bandwidth, ...
-                "DetectorGain",        obj.detector_gain);
-            data_out = data_in;
-            [data_out.signal, timing_error] = timing_synchronization(data_in.signal);
-
-        end
-    end
-end
-