马尔可夫过程_srtp论文(23)

数学建模,马尔科夫链,论文

case 4

F1(3,4)=F1(3,4)+1; end case 4

switch Z(i+1) case 1

F1(4,1)=F1(4,1)+1; case 2

F1(4,2)=F1(4,2)+1; case 3

F1(4,3)=F1(4,3)+1; case 4

F1(4,4)=F1(4,4)+1; end end end

for i=1:4 %计算 for j=1:4

P1(i,j)=F1(i,j)/sum(F1(i,:)); end end

for i=1:length(Z)-2 %计算 switch Z(i) case 1

switch Z(i+2) case 1

F2(1,1)=F2(1,1)+1; case 2

F2(1,2)=F2(1,2)+1; case 3

F2(1,3)=F2(1,3)+1; case 4

F2(1,4)=F2(1,4)+1; end case 2

switch Z(i+2) case 1

F2(2,1)=F2(2,1)+1; case 2

F2(2,2)=F2(2,2)+1; case 3

F2(2,3)=F2(2,3)+1; case 4

F2(2,4)=F2(2,4)+1;

1步转移概率矩阵P1 2步转移频数矩阵F2