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Working from home on zürich DSP.

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silas (home)
2025-03-10 08:56:17 +01:00
parent affdb4ad6f
commit bc86fa8d98
22 changed files with 459 additions and 137 deletions
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25
projects/IMDD_base_system/imdd_model.m
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@@ -35,7 +35,7 @@ tx_bw_nyquist = 0.8;
link_length = 1;
% RX
rop = -8;
rop = -5;
rx_bw_nyquist = 0.8;
vnle_order1 = 50;
@@ -61,7 +61,7 @@ mu_dfe = 0.0004;
dfe_ = sum(dfe_order)>0;
doub_mode = db_mode.db_precoded;
doub_mode = db_mode.no_db;
%%% change specific parameter if given in varargin
% Parse optional input arguments
@@ -132,10 +132,14 @@ f_nyquist = fsym/2;
%%% run the simulation or measurement or ...
if simulation_mode
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rcalpha);
rcalpha = 1;
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"alpha",rcalpha);
db_precode = 0;
db_encode = 0;
apply_pulsef = 1;
[Digi_sig,Symbols,Tx_bits] = PAMsource(...
"fsym",fsym,"M",M,"order",16,"useprbs",0,...
"fsym",fsym,"M",M,"order",18,"useprbs",1,...
"fs_out",fdac,...
"applyclipping",0,"clipfactor",1.5,...
"applypulseform",apply_pulsef,"pulseformer",Pform,...
@@ -143,7 +147,7 @@ if simulation_mode
"db_precode",db_precode,"db_encode",db_encode,...
"mrds_code",0,"mrds_blocklength",512).process();
% Digi_sig.spectrum("displayname",'Digi Spectrum','fignum',10,'normalizeTo0dB',1);
Digi_sig.spectrum("displayname",'Digi Spectrum','fignum',10,'normalizeTo0dB',1);
%%%%% AWG
% El_sig = M8199A("kover",kover).process(Digi_sig);
@@ -274,6 +278,13 @@ for occ = 1:proc_occ
Scpe_sig = Filter('filtdegree',4,"f_cutoff",Symbols.fs.*0.5,"fs",Scpe_sig.fs,"filterType",filtertypes.gaussian,"active",true).process(Scpe_sig);
Scpe_sig = Scpe_sig - mean(Scpe_sig.signal);
%
% Pform = Pulseformer("fsym",Scpe_sig.fs,"fdac",2*fsym,"pulse","rrc","pulselength",16,"alpha",rcalpha,"matched",0);
%
% Scpe_sig_matched = Pform.process(Scpe_sig);
%
% Scpe_sig.spectrum("normalizeTo0dB",0,"fignum",336,"displayname","scope ");
% Scpe_sig_matched.spectrum("normalizeTo0dB",0,"fignum",336,"displayname","matched");
%%% EQUALIZING
@@ -294,7 +305,7 @@ for occ = 1:proc_occ
end
%%%%% VNLE + PF + MLSE %%%%
if 1
if 0
% len_tr = length(Symbols)-1000;
eq_vnle_ = EQ("Ne",vnle_order,"Nb",dfe_order,"training_length",len_tr,"training_loops",5,"dd_loops",5,"K",2,"DCmu",mu_dc,"DDmu",[mu_ffe mu_dfe],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
@@ -309,7 +320,7 @@ for occ = 1:proc_occ
%%%%% Duobinary Targeting %%%%
if 1
if 0
mlse_db = MLSE_viterbi("DIR",[1,1],"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels);
eq_db = EQ("Ne",vnle_order,"Nb",dfe_order,"training_length",len_tr,"training_loops",5,"dd_loops",5,"K",2,"DCmu",mu_dc,"DDmu",[mu_ffe mu_dfe],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);