silas/imdd_silas
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Lab changes

Browse Source
This commit is contained in:
Silas Labor Zizou
2024-10-10 11:07:59 +02:00
parent 285fca45eb
commit 6b0f9de118
21 changed files with 901 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

129
Classes/00_signals/Signal.m
View File

@@ -6,6 +6,10 @@ classdef Signal
signal
logbook
fs
gitSHA
gitStatus
gitPatch
end
methods
@@ -17,18 +21,26 @@ classdef Signal
options.fs = [];
end
obj.signal = signal;
obj.signal = obj.signal;
obj.fs = options.fs;
obj.signal = signal;
obj.signal = obj.signal;
obj.fs = options.fs;
[~,obj.gitSHA] = system('git rev-parse HEAD');
[~,obj.gitStatus] = system('git status --porcelain');
[~,obj.gitPatch] = system('git diff');
%%% Stuff for Logbook %%%
SignalType = [];
TimeStamp = [];
Length = [];
SignalPower = [];
Nase = [];
SignalCopy = [];
ModifierName = [];
ModifierCopy= {};
Description = [];
obj.logbook = table(SignalType,TimeStamp,Length,SignalPower,Nase,Description);
obj.logbook = table(SignalType,TimeStamp,Length,SignalPower,Nase,SignalCopy,ModifierName, ModifierCopy, Description);
end
@@ -131,9 +143,13 @@ classdef Signal
options.fignum
options.displayname = [];
options.timeframe = 0;
options.clear = 0;
end
figure(options.fignum); % If figure does not exist, create new figure
if options.clear
clf
end
% 2) Plot into the figure handle found or created in one
t = (0:length(obj.signal)-1) / obj.fs; % time vector
@@ -227,24 +243,58 @@ classdef Signal
%% Write Logbook Entry
function obj = logbookentry(obj,varargin)
if nargin > 1
if nargin == 2
Description = varargin{1};
CallingModifier = evalin('caller','obj');
elseif nargin == 3
Description = varargin{1};
CallingModifier = varargin{2};
else
Description = "";
CallingModifier = evalin('caller','obj');
end
CallingModifierStruct = obj.objToStructFilteredRecursive(CallingModifier);
SignalType = [string(class(obj))];
TimeStamp = [(datetime('now','TimeZone','local','Format','HH:mm:ss'))];
Length = num2str(obj.length, ['%' sprintf('.%df', 0)]);%[obj.length];
SignalPower = [obj.power];
Nase = [0];
SignalCopy = obj.signal;
ModifierName = class(CallingModifier);
ModifierCopy = {CallingModifierStruct};
cell = {SignalType , TimeStamp , Length , SignalPower(1) , Nase, Description};
cell = {SignalType , TimeStamp , Length , SignalPower(1) , Nase, SignalCopy, ModifierName, ModifierCopy, Description};
obj.logbook = [obj.logbook;cell];
obj.logbook = [obj.logbook; cell];
end
function s = objToStructFilteredRecursive(~,obj)
% Convert the object to a structure using 'struct' and catch warnings
warnState = warning('off', 'MATLAB:structOnObject');
s = struct(obj); % Convert to struct
warning(warnState); % Restore previous warning state
% Get all field names of the struct
fields = fieldnames(s);
% Loop over each field and handle filtering
for i = 1:numel(fields)
fieldData = s.(fields{i});
if isstruct(fieldData) % If the field is a struct, call recursively
s.(fields{i}) = obj.objToStructFilteredRecursive(fieldData);
elseif numel(fieldData) > 1000 % Remove field if it has more than 1000 elements
%s = rmfield(s, fields{i});
s.(fields{i}) = [];
elseif isa(fieldData,'table')
s = rmfield(s, fields{i});
end
end
end
%% Resample Signal
function obj = resample(obj,options)
@@ -260,13 +310,23 @@ classdef Signal
warning('The signals fs is different from the given fs_in while it should be the same.');
end
obj.signal = resample(obj.signal,options.fs_out,options.fs_in,options.n,options.beta);
if options.fs_in == options.fs_out
desc = ['resample signal from ', num2str(options.fs_in*1e-9), ' GHz to ', num2str(options.fs_out*1e-9), ' GHz' ];
desc = ['No need to resample signal from ', num2str(options.fs_in*1e-9), ' GHz to ', num2str(options.fs_out*1e-9), ' GHz' ];
obj = obj.logbookentry(desc,obj);
obj = obj.logbookentry(desc);
else
obj.fs = options.fs_out;
obj.signal = resample(obj.signal,options.fs_out,options.fs_in,options.n,options.beta);
desc = ['resample signal from ', num2str(options.fs_in*1e-9), ' GHz to ', num2str(options.fs_out*1e-9), ' GHz' ];
obj = obj.logbookentry(desc,obj);
obj.fs = options.fs_out;
end
end
@@ -284,7 +344,7 @@ classdef Signal
N = 2^(nextpow2(length(obj.signal))-8);
[p_lin,w] = pwelch(obj.signal,hanning(N),N/2,N,obj.fs,"centered","power","mean");
normalize = 1;
normalize = 0;
if normalize
p_lin = p_lin./ max(p_lin);
p_dbm = 10*log10(p_lin); %dB to dBm in case of "power"
@@ -295,6 +355,7 @@ classdef Signal
end
figure(options.fignum); % If figure does not exist, create new figure
ax = gca;
hold on
plot(w.*1e-9,p_dbm,'DisplayName',options.displayname,'LineWidth',1);
xlabel("Frequency in GHz");
@@ -304,11 +365,11 @@ classdef Signal
edgetick = 2^(nextpow2(obj.fs*1e-9));
% xticks([-edgetick:16:edgetick]);
xlim([100*round( min(w.*1e-9)/100,1)-10,100*round( max(w.*1e-9)/100,1)+10])
ylim([100*round( min(p_dbm)/100,1)-3,100*round( max(p_dbm)/100,1)+3]);
ylim([min(floor( min(p_dbm))-3 , ax.YLim(1)), max(ceil( max(p_dbm) )+(3), ax.YLim(2))]);
yticks([-200:10:10]);
grid on
grid minor
legend
legend('Interpreter','none');
end
@@ -451,13 +512,21 @@ classdef Signal
[pks,pkpos] = findpeaks(co./max(co),'MinPeakDistance',length(b)/2,'MinPeakHeight',0.2,'NPeaks',maxpeaknum);
shifts = lags(pkpos);
%Cut occurences of ref signal from signal
%Cut occurences of ref signal from signal (only positive shifts)
S = {};
for c = shifts
for c = shifts(shifts>0)
sig = obj.delay(-c,'mode','samples');
sig.signal = sig.signal(1:length(b));
S{end+1,1} = sig;
end
%return/keep the sinal with the highest correlation (only within positive shifts)
[~,idx]=max(pks(shifts>0));
obj.signal = S{idx}.signal;
for c = 1:numel(shifts(shifts>0))
S{c}.logbook = [];
end
%plot all synced signals and the ref signal
debug = 0;
@@ -469,14 +538,16 @@ classdef Signal
end
end
%return the sinal with the highest correlation...
[~,idx]=max(pks);
obj.signal = S{idx}.signal;
end
function obj = filter(obj,a,b)
lbdesc = ['Filtering signal with H = a: ',num2str(a),' / b: ',num2str(b)];
obj = obj.logbookentry(lbdesc,obj);
obj.signal = filter(a,b,obj.signal);
end
@@ -560,7 +631,15 @@ classdef Signal
end
function eye(obj,fsym,M)
function eye(obj,fsym,M,options)
arguments
obj
fsym
M
options.fignum = 100;
options.displayname = "";
end
mode = 1;
@@ -587,7 +666,7 @@ classdef Signal
eye_mat = reshape(x(1:end-mod(length(x),histpoints_horizontal)),histpoints_horizontal,floor(length(x)/histpoints_horizontal)); %% reshape signal into 256 rows each row has the histogram(eye data of all symbols)
figure(922)
figure(options.fignum)
clf
if mode == 2
% generate "intuitive eye diagram" by drawing lines on top over
@@ -633,19 +712,19 @@ classdef Signal
colormap(cbrewer2("Blues",4096));
if isa(obj,'Opticalsignal')
title("Optical Eye")
title(['Optical Eye ',options.displayname])
ylabel("Power in mW");
y_tickstring = string(linspace(maxA.*1e3,minA.*1e3,16));
min_ = min(abs(obj.signal(100:end-100)).^2);
max_ = abs(max(obj.signal(100:end-100)).^2);
elseif isa(obj,'Electricalsignal')
title("Electrical Eye")
title(['Electrical Eye ',options.displayname])
ylabel("Voltage in V");
y_tickstring = string(linspace(maxA,minA,16));
min_ = min(obj.signal(100:end-100));
max_ = abs(max(obj.signal(100:end-100)));
else
title("Digital Eye")
title(['Digital Eye ',options.displayname])
ylabel("Digital Signal Amplitude");
y_tickstring = string(linspace(maxA,minA,16));
min_ = min(obj.signal(100:end-100));