I'm a beginner in matlab. I would like to plot a function as function in frequency..

my function is:

capacity(fk)=deltaf*sum*sum [log2(1-PTx(fk)*lamdai(fk)*/(M(fk)*N))];

plot(fk,capacity) f=(1:100MHz)

Where M is the number of transmit ports, lamdai denote the eigenvalues of HH, H(f) is the MIMO-PLC channel matrix and the superscript H represents the matrix Hermitian.

thank you.

Answer 1

[David Hill]

f=1:100e6;
capacity=(@f) ;%you need to describe your equation better. The sum*sum is confusing and the size of each variable should be noted
plot(f,capacity(f)); ​​

[abdelmounim HMAMOU]

fmin=1e6;

fmax=1e8;

f2=3e7;

f1=10^7;

nf=4096;

for k=1:nf

f=fmin*df^(k-1);

v(k)=f;

MT=M0*ML1*Mb1*ML2;

H=inv(MT(1:2,1:2)+MT(1:2,3:4)*(YL)); %transfer function

H11=H(1,1); H22=H(2,2);H12=H(1,2);H21=H(2,1);

capacity=deltaf*sum(sum(log2(1+P(fk)*phi(fk))/(M(fk)*N(fk))));

cap(k)=capacity

% sum is: sumation from k=1 to k=nf and second sum from 1 to 2

% phi denote the eigenvalues of HH' ( H' is Hermitian matrix)

end

plot(k,cap)