function [E,G,T,L,Q]=tx3(TS_num,K,c)
Lm=144; %時(shí)隙中綴碼長度144。
P=128; %基本中綴碼長度128。
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%初始化及變量賦值部分%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%BER=input('誤比特率的要求BER=');
%TS_num=floor(100/BER/88)+1; %%仿真的時(shí)隙數(shù)，以時(shí)隙的最小比特?cái)?shù)88為參考。
TS_interval=136;  %給一個(gè)合理的時(shí)隙間隔，使得在仿真的時(shí)間里信道變化可以忽略。
t=TS_num*(864+TS_interval)*675/864*0.000001; %仿真時(shí)間以秒為單位計(jì)算。
%K=zeros(1); %開辟存儲(chǔ)空間以便調(diào)試和性能估計(jì)時(shí)查找參照。
%c=zeros(1); %小區(qū)序號(hào)，間接決定了擾碼組（4個(gè)）和中綴碼組（4個(gè)）序號(hào)。
l=zeros(1); %擾碼的序號(hào)--4個(gè)碼中的第幾個(gè)，開辟內(nèi)存空間存以便調(diào)試和性能估計(jì)時(shí)查找參照。
m=zeros(1,128); %基本中綴碼集。
mid_num=zeros(1); %中綴碼的序號(hào)4個(gè)碼中的第幾個(gè)，開辟內(nèi)存空間存以便調(diào)試和性能估計(jì)時(shí)查找參照。

%c=input('小區(qū)的序號(hào)（1-32）c=');
mid_num=(c-1)*4; %與小區(qū)序號(hào)相關(guān)的中綴碼組（四個(gè)基本中綴碼）。
l=(c-1)*4+1; %小區(qū)的序號(hào)與之有關(guān)的擾碼組（四個(gè)基本中綴碼）。

x=0; %針對(duì)TS_num個(gè)時(shí)隙desired_k用戶數(shù)據(jù)bit的存放數(shù)組的起始位置。
z=0; %針對(duì)TS_num個(gè)時(shí)隙desired_k用戶時(shí)隙碼片chip的存放數(shù)組的起始位置。
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%基本中綴碼%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  m=remidable(mid_num);%找出需要的中綴碼；
  L=scramble(l);  %找出需要的擾碼；
    %K=input('當(dāng)前時(shí)隙激活的用戶數(shù)（<=16）K=');
    %desired_k=input('要做性能估計(jì)的用戶（<=K）=');
    W=floor(128/K);%由K決定的用戶的無線信道沖激響應(yīng)抽頭數(shù)目W。
    
    m_1=zeros(1,Lm+(K-1)*W); %產(chǎn)生復(fù)中綴碼的中間過程。
    M=zeros(K,Lm); %K個(gè)用戶的復(fù)中綴碼集合，每一行為一個(gè)用戶所對(duì)應(yīng)的復(fù)中綴碼。
    
   
   
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%擴(kuò)頻碼矩陣%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %if (K<=16) & (K>8) %第一步：由K決定的擴(kuò)頻因子Q的大小選擇。
     % Q=16;
     %elseif (K<=8) & (K>4) %有待升級(jí)優(yōu)化，根據(jù)擴(kuò)頻樹的使用原則。
     % Q=randsrc(1,1,[16,8]);
     %elseif (K<=4) & (K>2)  
    %  Q=randsrc(1,1,[16,8,4]);
    %elseif (K<=2) & (K>1)    
   %   Q=randsrc(1,1,[16,8,4,2]);
   %else 
  %    Q=randsrc(1,1,[16,8,4,2]);
  %end
  Q=16;
  A=[1];T=zeros(Q); %擴(kuò)頻碼矩陣。
  data_symbol_num=352*2/Q; %兩部份數(shù)據(jù)段的符號(hào)數(shù)與擴(kuò)頻因子及碼片數(shù)352（*2）的關(guān)系。
  data_bit_num=data_symbol_num*2; %2個(gè)比特產(chǎn)生一個(gè)符號(hào)。
  E=zeros(K,(864+TS_interval)*TS_num); %記錄了K個(gè)用戶仿真時(shí)間內(nèi)的所有發(fā)送chip。
  G=zeros(K,data_bit_num*TS_num); %紀(jì)錄了K個(gè)用戶仿真時(shí)間內(nèi)的所有源bit,初始化的容量以最大的可能bit數(shù)為參考。
    for i=1:log2(Q)
       A=[A A;
         A -A];
    end 
  if Q==1 %第二步：擴(kuò)頻碼矩陣。
      C=[1];T=A*C;
    elseif Q==2
      C=[1;sqrt(-1)];
      for j=1:2
          T(j,:)=C(j,1).*A(j,:);
       end
    elseif Q==4
      C=[-sqrt(-1);1;sqrt(-1);-1];
      for j=1:4
          T(j,:)=C(j,1).*A(j,:);
       end
    elseif Q==8
      C=[1;sqrt(-1);sqrt(-1);-1;-sqrt(-1);-1;-sqrt(-1);1];
      for j=1:8
          T(j,:)=C(j,1).*A(j,:);
       end
  else
      C=[-1;-sqrt(-1);1;1;sqrt(-1);-1;-1;1;-sqrt(-1);sqrt(-1);1;sqrt(-1);-sqrt(-1);-sqrt(-1);sqrt(-1);-1]; 
      for j=1:16
          T(j,:)=C(j,1).*A(j,:);
       end
   end
  clear A C;
  clear A C;
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%當(dāng)前時(shí)隙K個(gè)用戶的復(fù)中綴碼矩陣M%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %通過調(diào)用basic_midamble_codes(mid_num)得到當(dāng)前時(shí)隙user_num個(gè)用戶應(yīng)使用的基本中綴碼集mp。
    %由基本中綴碼集導(dǎo)出K個(gè)用戶的中綴碼集。
     for n=1:Lm+(K-1)*W
          if n<=P
             m_1(n)=m(n);
          else
             m_1(n)=m_1(n-P);
          end   
     end
    %每個(gè)用戶的復(fù)中綴碼的分配情況。第K個(gè)用戶使用m_1(1)到m_1(144)，第一個(gè)用戶使用到m(end)。
     for n=1:K
          for j=1:Lm
              M(n,j)=(sqrt(-1))^j*m_1(j+(K-n)*W);
          end
     end
     clear mp m m_1 n;
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
        
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                         TS_num個(gè)時(shí)隙的循環(huán)                                                %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
for f=1:TS_num    
         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
         %              循環(huán)K次產(chǎn)生K個(gè)用戶的當(dāng)前時(shí)隙                              %                           
         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
          
         for k=1:K %產(chǎn)生一個(gè)時(shí)隙激活的K個(gè)不同用戶。
               B=zeros(1,864); %初始化存放當(dāng)前時(shí)隙當(dāng)前用戶的數(shù)組。
               S=zeros(1,704);
               D_1=zeros(1,352);
               D_2=zeros(1,352);
               symbol=zeros(1,data_symbol_num);
               data= randsrc(1,data_bit_num,[0 1]);%比特到復(fù)數(shù)符號(hào)的映射:（00 +j,01 +1,10 -1,11 -j）。///////改動(dòng)11月18日
              
                   
                  for n=1:2:data_bit_num
                       if (data(n)==data(n+1)) 
                          if (data(n)==0)
                              symbol((n-1)/2+1)=+sqrt(-1);
                          else
                              symbol((n-1)/2+1)=-sqrt(-1);
                          end
                       elseif  (data(n)==0)
                              symbol((n-1)/2+1)=+1;
                       else   
                              symbol((n-1)/2+1)=-1;
                       end
                  end    
                  
                  
                  %%%擴(kuò)頻部分
                   for n=1:data_symbol_num 
                      for j=1:Q 
                          S((n-1)*Q+j)=symbol(n)*T(Q-k+1,j); %每個(gè)符號(hào)乘以擴(kuò)頻碼。
                      end
                  end    
                  clear symbol n;
                 %%%查找擾碼。
                  v=16; %擾碼的長度。如果704/v不為整數(shù)則需改動(dòng)程序！！！！
                  for n=1:352/v
                      for j=1:v
                          D_1((n-1)*v+j)=S((n-1)*v+j)*L(j); %以碼片為基本單位對(duì)齊進(jìn)行擾碼。
                      end
                  end
                 for n=352/v+1:704/v
                      for j=1:v
                          D_2((n-1)*v+j-352)=S((n-1)*v+j)*L(j); %以碼片為基本單位對(duì)齊進(jìn)行擾碼。S(n)由spreading.m得到。
                      end
                  end
                clear S n;
                %%%第k個(gè)用戶的時(shí)隙比特。
                 for n=1:864+TS_interval
                     if n<=352
                        B(n)=D_1(n); %第一部分?jǐn)?shù)據(jù)，可以考慮用矩陣D_1表示。
                     elseif (n>352) & (n<=496)
                        B(n)=M(k,n-352); %第k個(gè)用戶的復(fù)中綴碼。:)
                     elseif (n>496) & (n<=848)  
                        B(n)=D_2(n-496); %第二部分?jǐn)?shù)據(jù)，可以考慮用矩陣D_2表示。
                     else 
                        B(n)=0; %保護(hù)間隔。 :)
                    end
                end
                  E(k,x+1:x+864+TS_interval)=B; %第k行存放第k個(gè)用戶TS_num*864個(gè)chip。
                  G(k,z+1:z+data_bit_num)=data; %第k行存放第k個(gè)用戶TS_num*data_bit_num個(gè)data(source)。
                clear B data n;  
          end %一個(gè)時(shí)隙K個(gè)用戶循環(huán)完畢。
          x=x+864+TS_interval; %%下個(gè)時(shí)隙E存放起始位置下標(biāo)變量。
          z=z+data_bit_num; %%下個(gè)時(shí)隙G存放起始位置下標(biāo)變量
 end    
  y1=E(1,:);y2=G(1,:);
  clear W;