Recent content by geft

Thanks for the help. Yes, I was taught of it but I just wasn't able to make the connection.

2pi.f? Does that mean I should just substitute 100MHz into f to get the final answer? What of t?

So basically phi1 = 30, phi2 = -50 and phi3 = 210; the E_x etc. are the respective amplitudes; and the coefficients.. what coefficient? Wouldn't k be removed since the field is not a plane wave and thus the direction component is 0? I'm not sure how to factor in the frequency either since I...

Thanks, that z component certainly confused me and now I see why. Does that mean I'm unable to convert it to the (wt-kz) format?

I may be wrong but according to my textbook E(r,x) is the plane wave where r is the direction of propagation. For E0cos(wt-kz) z seems to be the direction.

Question 1 Basically I have no idea how to calculate the z part of the equation since x and y are assumed to be propagating in the z direction.

The incorrect answer is mine or the given one? With 5 bits it's 3.125% and for 6 bits it's 1.563%, neither of which is 2.44%, so I guess neither is correct?

The gain error is 2.44% as is given in parentheses, but since that is the next part of the question I didn't think it's needed for part (ii). To have 7 reliable bits (1111 111X), it needs 254 bits and for 6 bits (1111 11XX), it needs 252 bits?

For some reason I can't get the answer right. It is given as 6 bits but I calculated it to be 5. What am I doing wrong?

Finally I got it to work! I wish I could get rid of the preallocation warnings for time, FSKsignal and Dsignal though. Replacing them with your code doesn't work because Btime is an array, resulting in "Matrix dimensions must agree" error. clear all; % Number of bits Nbits = 30; bitstream =...

Ah, I see that I've made another elementary mistake. I really should start getting used to MATLAB. Thanks!

So basically it's just a simple concatenation. I had trouble reading it because that seems rather awkward. It's not my code though, I had the source in the original post. I have one last question if you don't mind; how do I assign an array to a matrix? Let's say X is a 1x6 array and I have...

Since in this case bitstream(ii) is used, I suppose it should return a single value and not an array? I just realized that this is no conditional statement. That explains why I couldn't get the result I wanted.

I never knew you could do equality checks without IF ELSE. Thanks for the help.

I'm trying to figure out what these do in certain implementations. I can't seem to find the answer in the documentation. http://www.mathworks.com/matlabcentral/fileexchange/30580-binary-amplitude-shift-keying[1] for ii = 1:1:length(bit_stream) ASK_signal = [ASK_signal...