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

changes in pulsef

Browse Source
This commit is contained in:
silas (home)
2025-03-11 07:17:26 +01:00
parent ea8a43b2ae
commit 0abb5d3d69
6 changed files with 114 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
Classes/01_transmit/Pulseformer.m
View File

@@ -50,7 +50,7 @@ classdef Pulseformer
signalclass_in = signalclass_in.logbookentry(lbdesc);
% write fs to signal
signalclass_in.fs = obj.fdac .* (obj.fdac./obj.fsym);
signalclass_in.fs = obj.fdac;%.* (obj.fdac./obj.fsym);
% write to output
signalclass_out = signalclass_in;
@@ -80,13 +80,13 @@ classdef Pulseformer
if ~rem(obj.fdac,obj.fsym)
%ist ein Vielfaches
sps = obj.fdac / obj.fsym;
up = sps;
dn = 1;
p = sps;
q = 1;
else
%ist kein Vielfaches
up = obj.fdac / gcd(obj.fdac, obj.fsym);
dn = obj.fsym / gcd(obj.fdac, obj.fsym);
sps= up;
p = obj.fsym / gcd(obj.fdac, obj.fsym); %upsampling p->->->
q = obj.fdac/ gcd(obj.fdac, obj.fsym); %downsampling <-q
sps= q; %sps während dem pulse shaping
end
if obj.pulse == pulseform.rc
@@ -123,7 +123,7 @@ classdef Pulseformer
data_out = circshift(data_out,[0 -(obj.pulselength*sps)]);
if rem(obj.fdac,obj.fsym)
data_out = data_out(1:dn:end);
data_out = data_out(1:q:end);
end
end
@@ -132,11 +132,11 @@ classdef Pulseformer
%Apply Filter using Matlab build in fctn.
data_out_ = upfirdn(data_in,h,up,dn);
data_out_ = upfirdn(data_in,h,p,q);
%cut signal, which is longer due to fir filter
st = round(up/dn*racos_len/2); %we need to cut y_out
en = round(st + (length(data_in)*up/dn));
st = round(p/q*racos_len/2); %we need to cut y_out
en = round(st + (length(data_in)*p/q));
data_out = data_out_(st:en);
end
@@ -146,7 +146,7 @@ classdef Pulseformer
subplot(2,1,1)
title("Convolution vs. Upfirdn and Cut")
hold on
plot(data_out_(1:200),'DisplayName','Matlab upfirdn');
% plot(data_out_(1:200),'DisplayName','Matlab upfirdn');
plot(data_out(1:200),'DisplayName','By Hand cyclic convolution')
subplot(2,1,2)
hold on
@@ -161,7 +161,7 @@ classdef Pulseformer
data_out = data_out';
%Check output integrity
if abs(round(up/dn * length(data_in)) - length(data_out)) > 4
if abs(round(p/q * length(data_in)) - length(data_out)) > 4
warning('Check signal length after pulse shaping');
%disp('Check signal length after pulse shaping');
end