clc,clear all;
p1=2;
M=2:1:6;
pook=zeros(1,length(M));
pppm=zeros(1,length(M));

prdppm=zeros(1,length(M));
pdpim=zeros(1,length(M));
pmppm=zeros(1,length(M));
M=2:1:6;
for i=1:length(M)
     pook(i)=10*log10(p1/2);
    pppm(i)=10*log10(p1/2^M(i));
    pdppm(i)=10*log10(2*p1/(2^M(i)+1));
    pdpim(i)=10*log10(2*p1/(2^M(i)+3));
    pmppm(i)=10*log10(p1/(2^M(i)+1));
end
figure(1)
plot(M,pook,'*-');
hold on
plot(M,pppm,'^-');
hold on
plot(M,pdppm,'o-');
hold on
plot(M,pdpim,'+-');
hold on
plot(M,pmppm)
hold off