206 lines
8.3 KiB
Matlab
206 lines
8.3 KiB
Matlab
function output = dsp_scope_signal(Scpe_sig_raw, Symbols, Tx_bits, options)
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%DSP_SCOPE_SIGNAL Run the common DSP chain starting from a scope signal.
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arguments
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Scpe_sig_raw
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Symbols
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Tx_bits
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options.fsym
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options.M
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options.duob_mode
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options.parameters struct = struct()
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options.preprocess_mode string = "auto"
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options.tx_pulseformer = []
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options.debug_plots (1,1) logical = false
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end
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output.ffe_package = [];
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output.dfe_package = [];
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output.mlse_package = [];
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output.vnle_package = [];
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output.dbtgt_package = [];
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output.dbenc_package = [];
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output.mlmlse_package = [];
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fsym = options.fsym;
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M = options.M;
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duob_mode = options.duob_mode;
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len_tr = 4096*2;
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ffe_order_ffe = [50, 0, 0];
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ffe_order_dfe = [50, 5, 5];
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ffe_order_vnle = [50, 5, 5];
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ffe_order_dbtgt = [50, 5, 5];
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dfe_order_vnle = [0, 0, 0];
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dfe_order_dbtgt = [0, 0, 0];
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dfe_feedback_order = [2, 0, 0];
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pf_ncoeffs = 1;
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mu_ffe = [0.0001, 0.0008, 0.001];
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mu_dfe = 0.0004;
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mu_dc = 0.005;
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dc_buffer_len = 1; %#ok<NASGU>
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mu_tr = 0;
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mu_dd = 0.05;
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adaption = 1;
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use_dd_mode = 1;
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use_ffe = 1;
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use_dfe = 1;
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use_vnle_mlse = 0;
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use_dbtgt = 0;
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use_dbenc = 0;
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use_ml_mlse = 0;
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showAnalysis = 0;
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decoding_mode = [];
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addProcessingResultToDatabase = 0; %#ok<NASGU>
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paramStruct = options.parameters;
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if ~isempty(paramStruct)
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paramNames = fieldnames(paramStruct);
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for i = 1:numel(paramNames)
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thisName = paramNames{i};
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thisValue = paramStruct.(thisName);
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eval([thisName ' = thisValue;']);
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end
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end
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pf_ = Postfilter("ncoeff", pf_ncoeffs, "useBurg", 1); %#ok<NASGU>
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mlse_ = MLSE("duobinary_output", 0, 'M', M, 'trellis_states', PAMmapper(M,0).levels); %#ok<NASGU>
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eq_post = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",2001,"sps",1,"decide",0,"adaption_technique","lms"); %#ok<NASGU>
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eq_post = FFE("epochs_tr",5,"epochs_dd",2,"len_tr",2^13,"mu_dd",mu_dd,"mu_tr",mu_tr,"order",25,"sps",2,"decide",0, "adaption",adaption_method(adaption),"dd_mode",use_dd_mode); %#ok<NASGU>
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mlse_db_enc = MLSE("DIR", [1,1], "duobinary_output", 0, "M", M, "trellis_states", PAMmapper(M,0).levels); %#ok<NASGU>
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eq_db_enc = EQ("Ne", ffe_order_dbtgt, "Nb", dfe_order_dbtgt, "training_length", len_tr, ...
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"training_loops", 5, "dd_loops", 5, "K", 2, "DCmu", mu_dc, ...
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"DDmu", [mu_ffe mu_dfe], "DFEmu", 0.005, "FFEmu", 0, "plotfinal", 0, "ideal_dfe", 1);
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Scpe_sig = preprocessSignal(Scpe_sig_raw, Symbols, fsym, ...
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"mode", options.preprocess_mode, ...
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"tx_pulseformer", options.tx_pulseformer, ...
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"debug_plots", options.debug_plots);
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Scpe_sig.spectrum("fignum",200,"normalizeTo0dB",1,"displayname",'Rx','addDCoffset',-6);
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Scpe_sig.spectrum("fignum",201,"normalizeTo0dB",0,"displayname",'Rx');
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ylim([-30,3]);
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xlim([-5,100]);
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Scpe_sig.signal = Scpe_sig.signal(1:2*Symbols.length);
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Scpe_sig.signal = real(Scpe_sig.signal);
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if duob_mode ~= db_mode.db_encoded
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if use_ffe
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eq_dfe = EQ("Ne",ffe_order_ffe,"Nb",[0,0,0],"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",0);
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ffe_results = ffe(eq_dfe, M, Scpe_sig, Symbols, Tx_bits, ...
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"precode_mode", duob_mode, ...
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'showAnalysis', showAnalysis, ...
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"postFFE", [], ...
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"eth_style_symbol_mapping", 0);
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ffe_results.config.equalizer_structure = "ffe";
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ffe_results.metrics.print;
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output.ffe_package = ffe_results;
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end
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if use_dfe
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eq_dfe = EQ("Ne",ffe_order_dfe,"Nb",dfe_feedback_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",0);
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dfe_results = ffe(eq_dfe, M, Scpe_sig, Symbols, Tx_bits, ...
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"precode_mode", duob_mode, ...
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'showAnalysis', showAnalysis, ...
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"postFFE", [], ...
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"eth_style_symbol_mapping", 0);
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dfe_results.config.equalizer_structure = "dfe";
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dfe_results.metrics.print;
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output.dfe_package = dfe_results;
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end
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if use_vnle_mlse
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eq_ = EQ("Ne",ffe_order_vnle,"Nb",dfe_order_vnle,"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",0);
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pf_ = Postfilter("ncoeff",pf_ncoeffs,"useBurg",1);
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useviterbi = 0;
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if useviterbi
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mlse_ = MLSE_viterbi("duobinary_output",0,'M',M,'trellis_states',PAMmapper(M,0).levels);
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else
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if duob_mode == db_mode.no_db && M == 6
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trellexlusion = 1;
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else
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trellexlusion = 0;
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end
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mlse_ = MLSE("duobinary_output",0,'M',M,'trellis_states',PAMmapper(M,0).levels,'scale_mode',2,'trellis_exclusion',trellexlusion,'trellis_state_mode',2);
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end
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[ffe_results, mlse_results] = vnle_postfilter_mlse(eq_, pf_, mlse_, M, Scpe_sig, Symbols, Tx_bits, ...
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"precode_mode", duob_mode, ...
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'showAnalysis', showAnalysis, ...
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"postFFE", [], ...
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"eth_style_symbol_mapping", 0);
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ffe_results.config.equalizer_structure = "vnle";
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ffe_results.metrics.print;
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mlse_results.metrics.print;
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output.mlse_package = mlse_results;
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output.vnle_package = ffe_results;
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end
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if use_ml_mlse
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mu_ml = 0.01;
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training_epochs = 100;
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ml_mlse_equalizer = ML_MLSE("epochs_tr",training_epochs,"epochs_dd",1, ...
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"len_tr",length(Scpe_sig)/4,"mu_dd",mu_ml,"mu_tr",mu_ml,"order",11,"sps",2, ...
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"traceback_depth",128,"L",1,"delta",4,"adaptive_mu",0);
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ml_mlse_results = ml_mlse(ml_mlse_equalizer, M, Scpe_sig, Symbols, Tx_bits, "precode_mode", duob_mode);
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output.mlmlse_package = ml_mlse_results;
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end
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if use_dbtgt
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useviterbi = 0;
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if useviterbi
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mlse_db_ = MLSE_viterbi("duobinary_output",0,'M',M,'trellis_states',PAMmapper(M,0).levels);
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else
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if duob_mode == db_mode.no_db && M == 6
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trellexlusion = 1;
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else
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trellexlusion = 0;
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end
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mlse_db_ = MLSE("DIR",[1,1],"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels,'scale_mode',2,'trellis_exclusion',trellexlusion,'trellis_state_mode',3);
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end
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eq_ = EQ("Ne",ffe_order_dbtgt,"Nb",dfe_order_dbtgt,"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);
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if isempty(decoding_mode)
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dbt_results = duobinary_target(eq_, mlse_db_, M, Scpe_sig, Symbols, Tx_bits, ...
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"precode_mode", duob_mode, ...
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'showAnalysis', showAnalysis, ...
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"postFFE", []);
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else
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dbt_results = duobinary_target(eq_, mlse_db_, M, Scpe_sig, Symbols, Tx_bits, ...
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"precode_mode", duob_mode, ...
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'showAnalysis', showAnalysis, ...
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"postFFE", [], ...
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"decoding_mode", decoding_mode);
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end
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dbt_results.metrics.print;
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output.dbtgt_package = dbt_results;
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end
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end
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if duob_mode == db_mode.db_encoded
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mlse_db_enc = MLSE_viterbi("duobinary_output",0,'M',M,'trellis_states',PAMmapper(M,0).levels); %#ok<NASGU>
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mlse_db_enc = MLSE("DIR", [1,1], "duobinary_output", 0, "M", M, "trellis_states", PAMmapper(M,0).levels);
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db_results = duobinary_signaling(eq_db_enc, mlse_db_enc, M, Scpe_sig, Symbols, Tx_bits, "precode_mode",duob_mode, "showAnalysis",showAnalysis,"postFFE",[]);
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output.dbenc_package = db_results;
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end
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end
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