I have the following code(adsbygoogle = window.adsbygoogle || []).push({});

dt = 0.01; % Set the time increment to 0.02 second.

t = (0:1:199)*dt; % Create a time array.

x1 = 0.5*square(pi*t); % Use MATLAB to create the signal

% amplitude +/- 0.5 and period 2.

subplot(2,1,1),plot(t,x1), axis([0,2.1,-0.6,0.6]);

x2 = zeros(1,length(x1)); % Define an empty column vector for the

% triangle function.

% Use a discrete approximation to the integral of the square

% wave to create the triangular signal.

x2(1) = -0.25;

for i = 2:200; x2(i) = x2(i-1) + x1(i)*dt; end

subplot(2,1,2),plot(t,x2), axis([0,2.1,-0.6,0.6]);

I need to calculate the sums of the power (by evaluating the fourier coefficients) in harmonics 1 - 3, 1 - 9, and 1 - 29 for signal x1 relative to the total power in the original signal x1.

Can anyone help me out??

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# Relative Power using Matlab

Can you offer guidance or do you also need help?

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