function turbo_code=turbo_code(data)
%進行turbo編碼，data是輸入數(shù)據(jù)turbo_code是編碼后的turbo碼
g=[1 0 1 1;1 1 0 1];
K=2752;
f1=143;
f2=172;
x1=data;
for i=0:K-1
    j=rem((f1*i+f2*i*i),K);
    x2(i+1)=x1(j+1);
end   
%完成交織,K是交織長度，也是data的數(shù)據(jù)長度
for i=1:3
    x1(K+i)=0;
    x2(K+i)=0;
end
%將最后3位設(shè)為0，實現(xiàn)狀態(tài)的歸0
[n,k]=size(g);
m=k-1;
state1=zeros(1,3);
state2=zeros(1,3);
%初始狀態(tài)設(shè)為0
for i=1:K+3
    a_k1=rem(g(1,:)*[x1(i) state1]',2);
    a_k2=rem(g(1,:)*[x2(i) state2]',2);
    output1(i)=rem(g(2,:)*[a_k1 state1]',2);
    output2(i)=rem(g(2,:)*[a_k2 state2]',2);
    state1=[a_k1,state1(1:m-1)];
    state2=[a_k2,state2(1:m-1)];
end
%實現(xiàn)編碼，三路輸出x1,output1,output2
n=1;
for i=1:K+3
    y(n)=x1(i);
    y(n+1)=output1(i);
    y(n+2)=output2(i);
    n=n+3;
end
%實現(xiàn)三路數(shù)據(jù)合并為一路串行數(shù)據(jù)
turbo_code=y;
%輸出的數(shù)據(jù)為turbo碼，作為返回值