set_sim_consts.m

根据TD-SCDMA系统的特点

function sim_consts = set_sim_consts

    global sim_consts;

    sim_consts.Go = [11 0 13; 0 11 15];                         % Generator of outer encoder
    sim_consts.BGo = [11; 11];                                  % Generator of outer encoder
    sim_consts.Ko = [4 4] ;                                     % Restrain length of outer encoder    
    sim_consts.mo = 3 ;
    sim_consts.to = poly2trellis(sim_consts.Ko, sim_consts.Go, sim_consts.BGo) ;
    sim_consts.enco = trellis2enc(sim_consts.to) ;              % encoder parameters
    sim_consts.Ro = sim_consts.enco.k/sim_consts.enco.n ;
    
    % sim_consts.Gi = [15 17];                                  % Generator of inner encoder  
    sim_consts.Gi = [10 13];
    % sim_consts.BGi = [15];                                    % Generator of outer encoder
    sim_consts.Ki = 4 ;                                         % Restrain length of inner encoder
    sim_consts.mi = 3 ;
    % sim_consts.ti = poly2trellis(sim_consts.Ki, sim_consts.Gi, sim_consts.BGi) ;
    sim_consts.ti = poly2trellis(sim_consts.Ki, sim_consts.Gi) ;
    sim_consts.enci = trellis2enc(sim_consts.ti) ;              % encoder parameters
    sim_consts.Ri = sim_consts.enci.k/sim_consts.enci.n ;
    
    sim_consts.Lo = 10;                                         % number of outer encoders
    sim_consts.Li = 3;                                          % number of inner encoders
    sim_consts.ferrlim = 1 ;                                  % simulation times
    sim_consts.nframeAll = 200 ;                                % the max number of frame
    sim_consts.L_o = 30 ;                                      % input Length of out encoder
    sim_consts.EbN0 = [2.0] ;                                   % Signal Noise Ratio
    sim_consts.niter = 8 ;                                     % interative times
    
    sim_consts.win = 15 ;                                       % back length
    sim_consts.a = 1 ;