reliability31.m

无线传感器网络的可靠路由算法

o=zeros(9,7);p=0.2628;
for l=1:9
    x=0;
    for k=1:7
        x=x+1;
        suc=0;
        s=0;
        for i=1:1000
            d=0;
            left=8;
            for h=1:5
                   v(h)=0;
                   count=0;
                   count1=0;
                   m=0;
                   while v(h)==0 && m<k
                         for j=count+1:left
                             s=s+1;
                             a=rand();
                             if a>p
                                count=count+1;
                             end
                         end
                         for j=left+count1:left+(l-1)*left/8
                             s=s+1;
                             a=rand();
                             if a>p
                                count1=count1+1;
                             end
                         end
                         if count1+count>=8
                            v(h)=1;
                         else
                             m=m+1;
                         end
                   end
                   if m>=k
                       left=count;
                   end
            end
            suc=suc+left;
        end
        o(l,x)=s/5/suc;
    end
end
i=[0:1:6];
plot(i,o(1,:),'-o',i,o(2,:),'-*',i,o(3,:),'-+',i,o(4,:),'-d',i,o(5,:),'-p',i,o(6,:),'-s',i,o(7,:),'-x',i,o(8,:),'->',i,o(9,:),'-h')
axis([0,6,0,4]);
legend 0 1 2 3 4 5 6 7 8
xlabel('maximum number of retransmission');
ylabel('overhead');
grid;