I have been trying to plot cdf vs capacity plot for my mimo-ofdm simulink model ,but not getting how to replace H matrix in the formula of cdf .as simulink model directly compute H matrix
I have got cdf formula as:
C(iter) = log2(real(det(I+SNR_linear/nT*H’*H)));
where H = sq2*(randn(nR,nT)+j*randn(nR,nT));
plz suggest me something and soon
C(iter) is the capacity equation not cdf. To get cdf, you can follow this;
1. [N,X] = hist(C,M)
This groups the elements of C (your C(iter)) into M equally-spaced containers, where M is a scalar. M=10 is the default. X is a vector containing the positions of the group centers resulting from the hist() function. N is also a vector containing the number of items in each container.
2. for ii=1:M
CDF(ii) = sum(N([1:ii]))/samples; %where samples=lenght(C) or number of iterations.
end
OR
CDF=cumsum(N)/samples; %this is more efficient
You are dividing by samples because you want the maximum to be 1 (hint: probability).
3. plot(X, CDF);
@Kwasi Adu-Boahen Opare ,
Thanks a lot sir .will try it out immediately and will get back to you .Thank you very again for the reply
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