function [ y , M ] = mod_rand_9 (random_method)

%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Gererate the Modulated Signals
%%

global k Fc Fd Fs n Fs_n;


switch random_method
    
% Random 01 scource expanded from Fs to Fd.
case 1
    M = 2;
    [x,rand_src] = modsrc_020620 (M);       %% Baseband digi scource. 
    y = mod_mask_020530b (x,n,M);

case 2
    M = 4;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_mask_020530b (x,n,M);
    

case 3
    M = 2;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_mfsk_020530b (x,n,M);

case 4
    M = 4;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_mfsk_020530b (x,n,M);
case 5
    M = 2;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_mpsk_020530b (x,n,M); 
case 6
    M = 4;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_mpsk_020530b (x,n,M);



 case 7
    M = 16;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_qam_020612b (x,n,M);
    
 case 8
    M = 2;
    [x,rand_src] = modsrc_020620 (M);
      y = mod_msk_030610 (x,n',M);    
 
case 9
    M = 2;
    [x,rand_src] = modsrc_020620 (M);
    y = mod_gmsk_030610 (x,n',M); 

    
end