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# MAWE

Last seen: 3 mois il y a Actif depuis 2022

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Question

error in using array2table
I have two numerical values in an array x and two string values in an array y. In the workspace these are shown as [0, 7.2e-9] a...

4 mois il y a | 1 réponse | 0

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Question

How can I implement these for loops efficiently using covolution?
I have this code for xx=1:length(x) for kk=1:length(x) xSinc(xx) = xSinc(xx)+x(kk)*sinc(xx-kk-delta/T); en...

4 mois il y a | 2 réponses | 0

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Question

Does the resample function do sinc interpolation before resampling?
I have original samples x of x(t) taken at t=kT_s where k is integer and T_s is the sampling period. From these samples, I want ...

5 mois il y a | 1 réponse | 0

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Question

How can I implement this for loop in vector operation form?
I have this for loop that I would like to implement more efficiently clear all; clearvars; N = 5; Rs...

5 mois il y a | 1 réponse | 0

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Question

Find the difference between all columns of a given row of a matrix
I have MXL matrix. For each row, I want to find the absolute difference between the columns, without repeating. For example, if ...

7 mois il y a | 2 réponses | 0

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Question

The frequency axis for the PSD of a signal
Suppose I have the signal x that contains N samples, and I take the FFT of this signal and rearrange the frequency components to...

environ un an il y a | 1 réponse | 0

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Question

Bandpass power spectrum density issue
I have a signal x with power 15 dB and carrier frequency 29.7 GHz. I want to draw the power spectral desnity (PSD) of the signal...

environ un an il y a | 1 réponse | 0

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Question

Power over the total bandwidth doesn't equal the sum of powers over the sub-bandwidths
I have a signal x with power 10 dB and bandwidth W Hz. I want to calculate the power from the PSD of x over [0, W], [0, W/2], [W...

environ un an il y a | 1 réponse | 0

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Question

Unexpected behavior of FFT
I have this signal r = x.*cos(2*pi*f1.*t) + i.*cos(2*pi*f2.*t) + n where x and i are BPSK symbols {+1,-1} and n is additi...

environ un an il y a | 1 réponse | 0

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Question

pwelch finds two-sided PSD at carrier frequency
I have the signal rt=xt+it, where x and i are BPSK-modulated rectangular pulse train transmitted at carrier frequency fx and fi....

environ un an il y a | 1 réponse | 0

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Question

How to correctly plot the PSD of segments of a signal?
I have a signal r of length S samples of baseband bandwidth W Hz. This represents the received signal in a communication system....

environ un an il y a | 1 réponse | 0

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Question

Requested 250000x250000 (931.3GB) array exceeds maximum array size preference
I have two vector x1 and x2 each of length 250,000X1 samples that I want to multiply them elementwise as below, but I get the er...

environ un an il y a | 1 réponse | 0

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Question

What does dsp.SpectrumAnalyzer do under the hood?
I have the below code that displays the spectrum of a signal. However, before ploting this spectrum I want the original frequenc...

plus d'un an il y a | 1 réponse | 0

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Question

get the data of dsp.spectrum Analyzer
Currently, I am using the below code to display the spectrum of the received signal (before receive filtering) using dsp.spectru...

plus d'un an il y a | 1 réponse | 0

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