p0=[0.3337,0.23327,0.09236,0.014275,0.00354,0.00046,0.000081];
r0=[2,3,4,5,5.5,6,6.5];
p1=[0.326797,0.193797,0.017844,0.002960,0.00084,0.000113,0.00002];
r1=[2,3,4,4.25,4.5,4.75,5];
p2=[0.32936,0.18052,0.012225,0.00082,0.00003];
r2=[2,3,3.75,4,4.25];
p3=[0.328650,0.1515,0.0158,0.000938,0.00008384];
r3=[2,3,3.5,3.75,4];
p4=[0.332538,0.1428,0.007463,0.0002,0.000035];
r4=[2,3,3.5,3.75,4];
p5=[0.342050,0.142776,0.0018,0.000025];
r5=[2,3,3.5,3.75];
p6=[0.425562,0.358470,0.227394,0.082919,0.013400,0.00436,0.000916];
r6=[2,3,4,5,6,6.5,7];
figure
semilogy(r6,p6,'s--');
grid on
hold on
semilogy(r0,p0,'o-');
semilogy(r1,p1,'d-');
semilogy(r2,p2,'^-');
semilogy(r3,p3,'<-');
semilogy(r4,p4,'v-');
semilogy(r5,p5,'>-');
legend('MLSD','無迭代','一次迭代','二次迭代','三次迭代','四次迭代','五次迭代');
ylabel('Pb');
xlabel('Eb/N0');