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how to use ha.coefficients for a filter?
It's an adaptive filter so the coefficients changes at every step. The Coefficients only contains the initial coefficients. In a...

plus de 11 ans il y a | 1

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Time-domain data to Frequency-domain data Questions
FFT is just an operation on the data, whether it's time domain or frequency domain is an interpretation of the data. So what you...

plus de 11 ans il y a | 0

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Matched filter in function matlab simulink
Here is an example: x = ones(10,1); mf = phased.MatchedFilter('CoefficientsSource','Input port'); y = step(mf,x,conj(...

plus de 11 ans il y a | 0

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How to look inside class based functions under Phased Array ToolBox?
You can type edit phased.TimeDelayBeamformer to see the source code. The code is a System object, but if you are only in...

plus de 11 ans il y a | 2

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Doubt about xcorr function
You may want to use the 'unbiased' option in xcorr so the normalization is on the number of points used to compute the correlati...

plus de 11 ans il y a | 1

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C++ Code Generation Fails
What release are you using? The support varies from release to release. In the latest release, all these functions are supported...

plus de 11 ans il y a | 1

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Bandwidth in Wideband Collector
The bandwidth in this case is derived from sample rate. When you specify a carrier frequency, fc, and a sample rate, fs, the ban...

plus de 11 ans il y a | 3

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How to compare a matrix rows such as:
B = sort(A,2); A(ismember(B(:,3:end),1:8,'rows'),:)

plus de 11 ans il y a | 0

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Help with H(z) response function
conv(([2/3 2/5 4/7]+[4/3 8/5 3/7]),[3 2 4])

plus de 11 ans il y a | 0

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Filters: Differences between fvtool and bode
I'm not sure how you are using bode, but from your transfer function, you are working with analog filter while fvtool is for dig...

plus de 11 ans il y a | 2

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pattern data out of scanned phased antenna array, not just the plot
What version of Phased Array System Toolbox do you have? If you are using R2014b, then you can use |directivity| method to retri...

plus de 11 ans il y a | 0

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how can i use a varying bandwidth in phased.FMCWWaveform function
You can modify the SweepInterval property in FMCWWaveform, if you set it to 'Positive', it sweeps from 0 to BW, where BW is the ...

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No time differencies in modeling phased.Collector
Are you expecting to see 0s in front of certain channels when you talk about time difference? |phased.Collector| doesn't do that...

plus de 11 ans il y a | 0

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Undefined function 'physconst' for input arguments of type 'char'. error
|physconst| requires Phased Array System Toolbox. You can do a ver in command line to check if you have license for that...

plus de 11 ans il y a | 0

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EasyGUI not working for version R2014b
Maybe you can put a breakpoint there and do >> set(obj.UiGuiArea) to see what can be set. It could just be a case sensiti...

plus de 11 ans il y a | 1

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Modelling customAntennaElement and customMicrophoneElement
If you are not varying the spatial pattern, then null location, relative sidelobe level and directivity will stay the same since...

plus de 11 ans il y a | 0

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I am unable to view the low frequency components of a signal that contains low (of the order of 20 KHz) and very high (of the order of THz) apart intermediate frequencies.
Without looking at your concrete steps, it's hard to judge. I'm also a bit confused when you say the signal from 10kHz onward is...

plus de 11 ans il y a | 0

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Write a quadratic equation function
Isn't this just depending on the value of b^2-4*a*c, something like val = b^2-4*a*c; if val > 0 % two roots else...

plus de 11 ans il y a | 0

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Sound source localization using Phased Array System Toolbox
Most DOA estimator shipped in Phased Array System Toolbox is indeed narrow band so they are probably not the best tool for wideb...

plus de 11 ans il y a | 0

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Help with fir1 needed
Did you compute wnm from some other functions? This looks like a round off numeric issue. A simple fix could be adding the follo...

plus de 11 ans il y a | 0

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i was trying this code but getting error for Y=fft(x.*hamming(length(x))); as .* operator matrix dimensions must agree.pls help me to resolve.
My guess is your |x| is a row vector while |hamming(length(x))| gives a column vector. You can add x = x(:); after seco...

plus de 11 ans il y a | 1

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Hi please help me for following
This requires Phased Array System Toolbox shipped with R2014b, you may want to type ver in your command window to see if...

plus de 11 ans il y a | 0

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How should I calculate power spectral density of signal with too high sampling rate
I would recommend first design a filter, to filter at 100Hz, then down sample/resample, and then do PSD calculation. Actually I ...

plus de 11 ans il y a | 0

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How Array gain is calculated in Phased array?
The ArrayGain in Phased Array System Toolbox calculates the SNR improvement due to the array. The computation is outlined in the...

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error with using filter
|dsp.BiquadFilter| is a System object, so its main method is |step()|. Try a = step(Hd,a)

presque 12 ans il y a | 0

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How to implement multipath fading channels using Phased Array System toolbox?
In theory you should be able to cascade the two channels together. The FreeSpace channel in Phased Array System Toolbox basicall...

presque 12 ans il y a | 0

presque 12 ans il y a | 0

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implementing multistage multirate filters
Here is an example you may find useful http://www.mathworks.com/help/dsp/ug/example-case-for-multiratemultistage-filters.html...

presque 12 ans il y a | 0

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Converting indices to time
This means your sampling rate is 200 Hz, so you can construct your time vector as fs = 200; t = (0:numel(x)-1)/fs; th...

presque 12 ans il y a | 1

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How to plot this signal?
y = filter([a b c],1,x); plot(y)

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