unable to plot graph for the code

hello all,

i am unable to plt graph for below code:

L=16;

subplot(1,1,1);

for SNR = 0:2:-20

snrlinear = 10.^(SNR./10); % Linear Value of SNR

Pd_the = marcumq(((1.6336 - (snrlinear + 1)).*sqrt(L))./(sqrt(2).*(snrlinear + 1)));

plot(SNR,Pd_the,'green');

end

please guide

Answer 1

[Image Analyst]

You never enter the loop because 0:2:-20 doesn't happen. It goes 0,2,4,6,8,10 etc. but that is in the opposite direction of -20 which means that it never happens - your for loop index is an empty matrix so it never enters.

[Wayne King]

You also have issues with marcumq(). marcumq() (if it is the MathWorks' version) takes a minimum of two input arguments

y = marcumq(10,20);