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how to add delay to a signal
If your |D| is an integer multiple of the sampling frequency, then all you need to do is adding 0 in front of the signal. Howeve...

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How to compute the fourier transform for a signal u(t) over frequency band [-10,10]?
Depending on your sampling rate and the number of points in your signal, you may want to also explore the following function ...

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Printing values to the command window
Use |fprintf| doc fprintf

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scale polar plot
You can plot the normalized G if all you care is the location. polar((1:360)*pi/180,G/max(G)) You should be careful usin...

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symbol rate
You need to know how many bits form one symbol.

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power of beamformed signals
What kind of signal you have? If you have a signal of WSS, you can probably use |var| directly. doc var

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beampattern calculation for linear array.
Besides what cyclist mentioned, I think there are several other issues in your code: # 100 elements translates to 20dB, not 100...

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Help using lastwarn.m
You need to find out the corresponding id generated by |dostuff|. You can try to do this by first reset the warning state and th...

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Suppress Warning Messages
You can use warning('off','message_id') to turn off a specific warning. You can use |lastwarn| to find out the message_...

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Finding the peak values of a graph
You should be able to use |findpeaks| to do this. doc findpeaks

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Multiple delays using cross correlation
Once you get the result of |xcorr|, you can use |findpeaks| to locate multiple peaks. [x,lag] = xcorr(r1,r2); [pks, locs...

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Directivity pattern for a beamformed signal
In many literature, beam pattern is a narrow band concept so it is related to the steering vector. Since you are using time doma...

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Sliding window algorathim to find the covariance matrix and the received signal model in radar detection ?
You may want to take a look at |corrmtx|. doc corrmtx

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3D graph drawing
You can try |hold| surf(X,Y,Z); hold on; surf(X,W,V);

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I don't know, what I do wrong?:'(
You typed |slove| and it should be |solve|

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LaTeX Interpreter and Blackboard bold (\mathbb{}) for text
If that is all you want to do, you can use the default tex interpreter. ylabel('\alpha in \bf{R}')

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How many ways to determine signal frequency?
Hi Tim, Here is my opinion on this issue and I certainly could be wrong. I would say Fourier transform, cosine/sine trans...

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Quicky. re 'whos' and workspace.
You could try |evalin| doc evalin

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show partically blokced x-axis
Hi Hugh, This is because the axis mode is still 'Auto'. I would suggest you to do the following when adjusting the y axis ...

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How to rewrite a non-linear function so that f(x) = 0?
Isn't it just 3*cos(x)-x^2 and exp(x)-2*x If you have to, you can define function |f1(x)| for the left side an...

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beamforming a signal with random noise
Try the following code: t = (0:999)'/1000; s = sin(2*pi*t); ad = exp(-1i*pi*(0:7)*sin(30*pi/180)); x = s*ad; y ...

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beamforming a signal with random noise
Hi zozo, It seems that you are using half wavelength spacing. If that's the case, your steering vector should be ad = e...

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beamforming a signal with random noise
Is your signal sin(20*pi/180) and also impinging from 20 degrees? I just want to make sure this is what you want. It looks like ...

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delay and sum beamforming(in frequency domain)
Hi Zoro, What you have so far is calculating the delays between the elements. The next steps will be (1) simulate the rece...

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plot3
Hi Lisa, I don't think plot3 is appropriate for your purpose. I think you probably better off using |image| or |imagesc|. ...

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Error in creating Class
You can try temp = struct2cell(theStruct); ncitem(temp{:});

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To apply Gaussian in histogram?
If you want to generate random number whose histogram is Gaussian shaped, check |randn|. Otherwise, could you clarify what you m...

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problem printing double format values
You missed a t, it's |fprintf|, not |fprinf|

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How to freeze a random sample
There are some side effects using the syntax Walter mentioned. Basically MATLAB changes the random number generator silently beh...

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find position of a element in a matrix
You can use |find| find(A<7,1,'last') HTH

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