www.gusucode.com > 基于matlab的GUI界面的语音信号端点标定源码程序 > 基于VBLAST-OFDM的MATLAB SIMULATION，图形化界面，并且给出了各仿真图/vblast-ofdm simulation/verify_params.m

    function verify_params

persistent state;

if isempty(state)
   state = struct('DataCarriers','10','TimeMaxDelay', '50', 'kfactor', '0', ...
      'SimulationPackets', '1000');
end

curr_obj = gcbo;
obj_tag = get(curr_obj,'Tag');

% performs logical check on input parameters
switch (obj_tag)
    
case 'DataCarriers'
   data_carriers_str = get(curr_obj, 'String');
   try
      data_carriers = eval(data_carriers_str);
      if data_carriers < 0
         set(curr_obj,'String', state.DataCarriers);
         errordlg('Data carriers cannot be negative','Invalid input', 'modal');
      else
         state = setfield(state, 'DataCarriers', data_carriers_str);
      end
   catch
      set(curr_obj,'String', state.DataCarriers);
      errordlg('Data carriers value not a number','Invalid input', 'modal');
   end    
case 'FFTsixtyfour'
    FFTsixtyfour=get(curr_obj, 'Value');
   if FFTsixtyfour==1
      set(curr_obj, 'Enable', 'inactive')
      FFTonetwoeight = findobj('Tag', 'FFTonetwoeight');
      set(FFTonetwoeight, 'Enable', 'on')
      set(FFTonetwoeight, 'Value', 0);
      FFTtwofivesix = findobj('Tag', 'FFTtwofivesix');
      set(FFTtwofivesix, 'Enable', 'on')
      set(FFTtwofivesix, 'Value', 0);
      FFTfiveonetwo = findobj('Tag', 'FFTfiveonetwo');
      set(FFTfiveonetwo, 'Enable', 'on')
      set(FFTfiveonetwo, 'Value', 0);
   end
case 'FFTonetwoeight'
    FFTonetwoeight=get(curr_obj, 'Value');
   if FFTonetwoeight==1
      set(curr_obj, 'Enable', 'inactive')
      FFTsixtyfour = findobj('Tag', 'FFTsixtyfour');
      set(FFTsixtyfour, 'Enable', 'on')
      set(FFTsixtyfour, 'Value', 0);
      FFTtwofivesix = findobj('Tag', 'FFTtwofivesix');
      set(FFTtwofivesix, 'Enable', 'on')
      set(FFTtwofivesix, 'Value', 0);
      FFTfiveonetwo = findobj('Tag', 'FFTfiveonetwo');
      set(FFTfiveonetwo, 'Enable', 'on')
      set(FFTfiveonetwo, 'Value', 0);
   end
case 'FFTtwofivesix'
    FFTtwofivesix=get(curr_obj, 'Value');
   if FFTtwofivesix==1
      set(curr_obj, 'Enable', 'inactive')
      FFTonetwoeight = findobj('Tag', 'FFTonetwoeight');
      set(FFTonetwoeight, 'Enable', 'on')
      set(FFTonetwoeight, 'Value', 0);
      FFTsixtyfour = findobj('Tag', 'FFTsixtyfour');
      set(FFTsixtyfour, 'Enable', 'on')
      set(FFTsixtyfour, 'Value', 0);
      FFTfiveonetwo = findobj('Tag', 'FFTfiveonetwo');
      set(FFTfiveonetwo, 'Enable', 'on')
      set(FFTfiveonetwo, 'Value', 0);
   end
case 'FFTfiveonetwo'
    FFTfiveonetwo=get(curr_obj, 'Value');
   if FFTfiveonetwo==1
      set(curr_obj, 'Enable', 'inactive')
      FFTonetwoeight = findobj('Tag', 'FFTonetwoeight');
      set(FFTonetwoeight, 'Enable', 'on')
      set(FFTonetwoeight, 'Value', 0);
      FFTtwofivesix = findobj('Tag', 'FFTtwofivesix');
      set(FFTtwofivesix, 'Enable', 'on')
      set(FFTtwofivesix, 'Value', 0);
      FFTsixtyfour = findobj('Tag', 'FFTsixtyfour');
      set(FFTsixtyfour, 'Enable', 'on')
      set(FFTsixtyfour, 'Value', 0);
   end
case 'AWGN'
   awgn_val = get(curr_obj, 'Value');
   if awgn_val == 1
      set(curr_obj, 'Enable', 'inactive')
      exp_decay_chan = findobj('Tag', 'MaxDelaySpread');
      set(exp_decay_chan, 'Enable', 'on')
      set(exp_decay_chan, 'Value', 0);
      rician = findobj('Tag', 'Rician');
      set(rician, 'Enable', 'on')
      set(rician, 'Value', 0);
      vblast=findobj('Tag','VBLAST');
      set(vblast,'Enable','on');
      set(vblast,'Value',0);          
   end
case 'MaxDelaySpread'
   exp_decay_val = get(curr_obj, 'Value');
   if exp_decay_val == 1      
      set(curr_obj, 'Enable', 'inactive');
      awgn_chan = findobj('Tag', 'AWGN');
      set(awgn_chan, 'Enable', 'on')
      set(awgn_chan, 'Value', 0);
      rician = findobj('Tag', 'Rician');
      set(rician, 'Enable', 'on')
      set(rician, 'Value', 0);
   end
  case 'kfactor'
    kfactor_str = get(curr_obj,'String');
   try
      kfactor = eval(kfactor_str);
      if kfactor < 0 
         set(curr_obj, 'String', state.kfactor);
         errordlg('K factor cannot be negative','Invalid input', 'modal');
     else
         state = setfield(state, 'kfactor', kfactor_str);      
     end
   catch
      set(curr_obj,'String', state.kfactor);
      errordlg('K factor value not a number','Invalid input', 'modal');
   end
case 'TimeMaxDelay'
   exp_decay_trms_str = get(curr_obj,'String');
   try
      exp_decay_trms = eval(exp_decay_trms_str);
      if exp_decay_trms < 0
         set(curr_obj, 'String', state.TimeMaxDelay);
         errordlg('Exponential decay T rms cannot be negative','Invalid input', 'modal');
      else
         state = setfield(state, 'TimeMaxDelay', exp_decay_trms_str);      
      end
   catch
      set(curr_obj,'String', state.TimeMaxDelay);
      errordlg('Exponential decay T rms value not a number','Invalid input', 'modal');
   end
case 'Rician'
   rician = get(curr_obj, 'Value');
   if rician == 1      
      set(curr_obj, 'Enable', 'inactive');
      awgn_chan = findobj('Tag', 'AWGN');
      set(awgn_chan, 'Enable', 'on')
      set(awgn_chan, 'Value', 0);
      exp_decay_chan = findobj('Tag', 'MaxDelaySpread');
      set(exp_decay_chan, 'Enable', 'on')
      set(exp_decay_chan, 'Value', 0);
   end
case 'ChannelEstimation_LSE'
   channel_est_lse = get(curr_obj,'Value');
   vblast = get(findobj('Tag', 'VBLAST'),'Value');
   if vblast==1
       channel_est_lse = findobj('Tag', 'ChannelEstimation_LSE');
       channel_est_fft = findobj('Tag', 'ChannelEstimation_FFT');
       set(channel_est_lse,'Value',0);
       set(channel_est_fft,'Value',0);
       h=msgbox('You have selected VBlast option.Channel estimation is disabled. ','VBlast Algorithm','warn','modal');
             set(h,'Position',[235 220 300 100.25])
   end
case 'ChannelEstimation_FFT'
   channel_est_fft = get(curr_obj,'Value');
   vblast = get(findobj('Tag', 'VBLAST'),'Value');
   if channel_est_fft==1
       channel_est_lse = findobj('Tag', 'ChannelEstimation_LSE');
       set(channel_est_lse,'Value',1);
   end
   if vblast==1
       channel_est_lse = findobj('Tag', 'ChannelEstimation_LSE');
       channel_est_fft = findobj('Tag', 'ChannelEstimation_FFT');
       set(channel_est_lse,'Value',0);
       set(channel_est_fft,'Value',0);
       h=msgbox('You have selected VBlast option.Channel estimation is disabled. ','VBlast Algorithm','warn','modal');
             set(h,'Position',[235 220 300 100.25])
   end
case 'SimulationPackets'
   pkts_to_simulate_str = get(curr_obj, 'String');
   try
      pkts_to_simulate = eval(pkts_to_simulate_str);
      if pkts_to_simulate < 0
         set(curr_obj,'String', state.SimulationPackets);
         errordlg('Packets to simulate cannot be negative','Invalid input', 'modal');
      else
         state = setfield(state, 'SimulationPackets', pkts_to_simulate_str);
      end
   catch
      set(curr_obj,'String', state.SimulationPackets);
      errordlg('Packets to simulate value not a number','Invalid input', 'modal');
   end
 case 'MIMO_Tx. Antennas'
   txa = get(curr_obj,'String');
   try
      txa = eval(txa);
      state = setfield(state, 'M', txa);
   catch
      set(curr_obj,'String', state.M);
      errordlg('Tx. Antenna value not a number','Invalid input', 'modal');
   end
 case 'MIMO_Rx. Antennas'
   rxa = get(curr_obj,'String');
   try
      rxa = eval(rxa);
      state = setfield(state, 'N', rxa);
   catch
      set(curr_obj,'String', state.N);
      errordlg('Rx. Antenna value not a number','Invalid input', 'modal');
   end
case 'VBLAST'
   vblast = get(findobj('Tag', 'VBLAST'),'Value');
   if vblast == 1
      txdiv2 = findobj('Tag', 'MIMO_TwoTxAntennas');
      txdiv4 = findobj('Tag', 'MIMO_FourTxAntennas');
      rxdiv2 = findobj('Tag','MIMO_TwoRxAntennas');
      rxdiv4 = findobj('Tag','MIMO_FourRxAntennas');
      interleave_bits=findobj('Tag', 'InterleavingBits');
      set(txdiv2, 'Value', 0);
      set(txdiv4, 'Value', 0);
      set(rxdiv2, 'Value', 0);
      set(rxdiv4, 'Value', 0);
      set(interleave_bits,'Value',0);
      channel_est_lse = findobj('Tag', 'ChannelEstimation_LSE');
      channel_est_fft = findobj('Tag', 'ChannelEstimation_FFT');
      set(channel_est_lse,'Value',0);
      set(channel_est_fft,'Value',0);
      awgn_chan = findobj('Tag', 'AWGN');
      set(awgn_chan,'Enable','on');
      set(awgn_chan, 'Value', 0);
      exp_decay_chan = findobj('Tag', 'MaxDelaySpread');
      set(exp_decay_chan, 'Enable', 'on')
      set(exp_decay_chan, 'Value', 1);
      rician = findobj('Tag', 'Rician');
      set(rician, 'Enable', 'on')
      set(rician, 'Value', 0);
      msgbox('This program only deals with 1 x 2, 2 x 2, 2 x 3 and 2 x 4 systems.There is no interleaving,no channel estimation and no AWGN channel.The default channel is a Rayleigh channel.','VBlast Algorithm','warn','modal');
   end   
case 'MIMO_TwoTxAntennas'
    use_tx_div2 = get(findobj('Tag', 'MIMO_TwoTxAntennas'),'Value');
    if use_tx_div2==1
        vblast=findobj('Tag','VBLAST');
        set(vblast,'Value',0);
        use_tx_div4=findobj('Tag', 'MIMO_FourTxAntennas');
        set(use_tx_div4,'Value',0);
    end
case 'MIMO_FourTxAntennas'
    use_tx_div4 = get(findobj('Tag', 'MIMO_FourTxAntennas'),'Value');
    if use_tx_div4==1
        vblast=findobj('Tag','VBLAST');
        set(vblast,'Value',0);
        use_tx_div2=findobj('Tag', 'MIMO_TwoTxAntennas');
        set(use_tx_div2,'Value',0);
    end

case 'MIMO_TwoRxAntennas'
    use_rx_div2 = get(findobj('Tag', 'MIMO_TwoRxAntennas'),'Value');
    if use_rx_div2==1
        vblast=findobj('Tag','VBLAST');
        set(vblast,'Value',0);
        use_rx_div4=findobj('Tag', 'MIMO_FourRxAntennas');
        set(use_rx_div4,'Value',0);
    end
case 'MIMO_FourRxAntennas'
    use_rx_div4 = get(findobj('Tag', 'MIMO_FourRxAntennas'),'Value');
    if use_rx_div4==1
        vblast=findobj('Tag','VBLAST');
        set(vblast,'Value',0);
        use_rx_div2=findobj('Tag', 'MIMO_TwoRxAntennas');
        set(use_rx_div2,'Value',0);

    end
case 'InterleavingBits'
    interleave_bits = get(findobj('Tag', 'InterleavingBits'),'Value');
    if interleave_bits==1
        vblast=findobj('Tag','VBLAST');
        set(vblast,'Value',0);
    end
case 'ZeroPad'
    zeropad=get(findobj('Tag', 'ZeroPad'),'Value');
    if zeropad==1
        h1=findobj('Tag','DataCarriers');
        set(h1,'Visible','On');
        h1=findobj('Tag','StaticText');
        set(h1,'Visible','On');
        % Interleaving
        InterleavingBits = findobj('Tag', 'InterleavingBits');
        set(InterleavingBits,'Visible','Off');
    else
        h1=findobj('Tag','DataCarriers');
        set(h1,'Visible','Off');
        h1=findobj('Tag','StaticText');
        set(h1,'Visible','Off');
        % Interleaving
        InterleavingBits = findobj('Tag', 'InterleavingBits');
        set(InterleavingBits,'Visible','On');
    end
case 'FileName'
   filename_str = str2double(get(curr_obj,'String'));
   try
      filename = eval(filename_str);
      state = setfield(state, 'FILE_FileName', filename_str);
   end
  
otherwise
   
end