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Answered
Time shift a signal and save the new signal
Hi, If you want to align the signals in time domain you can try using correlation. Using correlation you can find the lag betwe...
Time shift a signal and save the new signal
Hi, If you want to align the signals in time domain you can try using correlation. Using correlation you can find the lag betwe...
1 day ago | 0
Answered
Findpeaks based on signal frequency
Hi, Your approach does not seem to work whenever the spacing of breaths is inconsistent. In such cases using a fixed "MinPeakDi...
Findpeaks based on signal frequency
Hi, Your approach does not seem to work whenever the spacing of breaths is inconsistent. In such cases using a fixed "MinPeakDi...
2 days ago | 0
Answered
Hilbert transform for instantaneous phase when time data does not begin at zero
Hi, The DC offset you're observing in the instantaneous phase is due to the initial phase of the signal. This occurs because th...
Hilbert transform for instantaneous phase when time data does not begin at zero
Hi, The DC offset you're observing in the instantaneous phase is due to the initial phase of the signal. This occurs because th...
3 days ago | 0
Answered
detect distortion in a sine signal using an undistorted one with Simulink
Hi, You can detect glitches in Simulink by simply calculating the difference of the signals using a "sum" block. You can also d...
detect distortion in a sine signal using an undistorted one with Simulink
Hi, You can detect glitches in Simulink by simply calculating the difference of the signals using a "sum" block. You can also d...
3 days ago | 0
Answered
how to find the noise frequency in ECG signal?
Hi, 1200 Hz is clearly one of the noise frequency. To get the remaining noise frequencies you can use the "maxk" function in MA...
how to find the noise frequency in ECG signal?
Hi, 1200 Hz is clearly one of the noise frequency. To get the remaining noise frequencies you can use the "maxk" function in MA...
4 days ago | 0
Answered
Wanted metlab code for median and mean frequency of EMG data
Hi, Mean Frequency is the "center of mass" of the spectrum, it is the average frequency weighted by power. Median Frequency is...
Wanted metlab code for median and mean frequency of EMG data
Hi, Mean Frequency is the "center of mass" of the spectrum, it is the average frequency weighted by power. Median Frequency is...
4 days ago | 0
Answered
I want to generate a pulse with high repetition frequency of 1GHz .Initially I used the pulsetran function for gaussian pulse with a repetition frequency of 1khz and i got the output. But when I replaced 1khz with 1 Ghz, it shows vertcat error.pls h
Hi Ashwini, I understand that you're following the Gaussian pulse example from the "pulstran" documentation and are trying to i...
I want to generate a pulse with high repetition frequency of 1GHz .Initially I used the pulsetran function for gaussian pulse with a repetition frequency of 1khz and i got the output. But when I replaced 1khz with 1 Ghz, it shows vertcat error.pls h
Hi Ashwini, I understand that you're following the Gaussian pulse example from the "pulstran" documentation and are trying to i...
5 days ago | 0
Answered
Derivative of Temperature vs time data
Hi Ryan, Here are some suggestions to calculate a smoother derivative of noisy data: Smoothing the data by using smoothing fil...
Derivative of Temperature vs time data
Hi Ryan, Here are some suggestions to calculate a smoother derivative of noisy data: Smoothing the data by using smoothing fil...
1 month ago | 0
Answered
Calculate Lag from xcorr
Hi, I understand that you are getting a delay of 1 second instead of 0.5 seconds. Here are some things to consider: The "lags"...
Calculate Lag from xcorr
Hi, I understand that you are getting a delay of 1 second instead of 0.5 seconds. Here are some things to consider: The "lags"...
1 month ago | 0
Answered
Interpolation and Decimation Factors for USRP
Hi Saurabh, The interpolation factor decides the sampling frequency of the waveform. The sampling frequency is given by the mas...
Interpolation and Decimation Factors for USRP
Hi Saurabh, The interpolation factor decides the sampling frequency of the waveform. The sampling frequency is given by the mas...
3 months ago | 0
Answered
Arranging column vector of bits as timeseries data for modulation
Hi Jack, Since you would like to create a standalone Simulink model, a possible method can be to use the "MATLAB function" bloc...
Arranging column vector of bits as timeseries data for modulation
Hi Jack, Since you would like to create a standalone Simulink model, a possible method can be to use the "MATLAB function" bloc...
3 months ago | 0
Answered
Solution of algebraic equation that a variable occures both in numerator and denomirator with respect to an other variable
Hi, The following code might help you: %random values for defined variables A=1; n0=1; a1=1; a2=1; G=1; cp=1; Ta=300; ...
Solution of algebraic equation that a variable occures both in numerator and denomirator with respect to an other variable
Hi, The following code might help you: %random values for defined variables A=1; n0=1; a1=1; a2=1; G=1; cp=1; Ta=300; ...
3 months ago | 0
Answered
why is my loop printing 0 instead of a value, not sure which part of the code is incorrect
Hello Erin, For the function "LandingDistance" the inputs "d1","d2","v0" are fixed and "thetaL" can vary from 0 to 90. The foll...
why is my loop printing 0 instead of a value, not sure which part of the code is incorrect
Hello Erin, For the function "LandingDistance" the inputs "d1","d2","v0" are fixed and "thetaL" can vary from 0 to 90. The foll...
3 months ago | 0
Answered
QPSK simulation with AWGN and BER using Simulink
Hi, From the attached screenshot, the model seems accurate for BER calculation of QPSK modulation and demodulation. Make sure t...
QPSK simulation with AWGN and BER using Simulink
Hi, From the attached screenshot, the model seems accurate for BER calculation of QPSK modulation and demodulation. Make sure t...
4 months ago | 0
Answered
GMSK Bit error rate plot
Hi, The following code might help: hMod = comm.GMSKModulator('BitInput', true, 'InitialPhaseOffset',0); hDemod = comm.GMSKDem...
GMSK Bit error rate plot
Hi, The following code might help: hMod = comm.GMSKModulator('BitInput', true, 'InitialPhaseOffset',0); hDemod = comm.GMSKDem...
4 months ago | 0
Answered
im trying huffman encoding in matlab and reached the part where i get a table with huffman codes, what's next ?
Hi, If you replace the pixel values with the code and store them in order you get a binary representation of image that is shor...
im trying huffman encoding in matlab and reached the part where i get a table with huffman codes, what's next ?
Hi, If you replace the pixel values with the code and store them in order you get a binary representation of image that is shor...
4 months ago | 0
Answered
SNR Calculation on the basis of channel estimation using Pilot Symbols
Hi, Channel estimation is done at the receiver end using pilot signals and based on this estimation the CSI parameters like RI,...
SNR Calculation on the basis of channel estimation using Pilot Symbols
Hi, Channel estimation is done at the receiver end using pilot signals and based on this estimation the CSI parameters like RI,...
4 months ago | 1
Answered
How to developed MATLAB code of the Discrete time signal
Hi, A discrete time signal can be quanitized into "L" levels similar to the code shown below: L=4; X=rand(1,10) Xg=round(X*(...
How to developed MATLAB code of the Discrete time signal
Hi, A discrete time signal can be quanitized into "L" levels similar to the code shown below: L=4; X=rand(1,10) Xg=round(X*(...
4 months ago | 0
Answered
if i change convolution encoder to 3/4 or 7/8 code rate can u tell BER shd improve wid comp to1/2 ?
Hi Shailee, In general when the code rate is increased from 1/2 to 3/4 or 7/8, the BER is reduced due to increased redundancy i...
if i change convolution encoder to 3/4 or 7/8 code rate can u tell BER shd improve wid comp to1/2 ?
Hi Shailee, In general when the code rate is increased from 1/2 to 3/4 or 7/8, the BER is reduced due to increased redundancy i...
5 months ago | 0
Answered
I want to measure the line voltages in a three phase system, can I connect the voltage measurement between the two phases? Does it mean short circuiting the two phases?
Hi Rishabh, Connecting a voltmeter between two phases to measure the line-to-line voltage does not create a short circuit betwe...
I want to measure the line voltages in a three phase system, can I connect the voltage measurement between the two phases? Does it mean short circuiting the two phases?
Hi Rishabh, Connecting a voltmeter between two phases to measure the line-to-line voltage does not create a short circuit betwe...
5 months ago | 0
Answered
getting group delay by differentiating phase of reflectance
Hi omnia, The spikes in the plot of differential of phase is because there are points of non-differentiability in the function ...
getting group delay by differentiating phase of reflectance
Hi omnia, The spikes in the plot of differential of phase is because there are points of non-differentiability in the function ...
5 months ago | 1
| accepted
Answered
Passband gfsk modulation in simulink
Hello, Passband GFSK modulation can be performed in Simulink using the "CPM Modulator Baseband" block in Simulink. This can be ...
Passband gfsk modulation in simulink
Hello, Passband GFSK modulation can be performed in Simulink using the "CPM Modulator Baseband" block in Simulink. This can be ...
6 months ago | 0
Answered
How to Output Updated Parameters Value in ode Integration Process When the odeEvent is triggered ?
Hi Chuguang, The call back function is called whenever the event occurs, only if the "Response" parameter is set to "callback"....
How to Output Updated Parameters Value in ode Integration Process When the odeEvent is triggered ?
Hi Chuguang, The call back function is called whenever the event occurs, only if the "Response" parameter is set to "callback"....
6 months ago | 1
| accepted
Answered
Rename TIF files in a folder
Hello Tomer, You can extract the file names using "dir" function. Then by looping through each file use regex expressions to ge...
Rename TIF files in a folder
Hello Tomer, You can extract the file names using "dir" function. Then by looping through each file use regex expressions to ge...
11 months ago | 0
Answered
How can I write a script to replace a specific integer value in my table, with the average of the data above and below that integer in the table
Hello JJ, You can use logical indexing to find all the index values containing the value "999". You can replace these values wi...
How can I write a script to replace a specific integer value in my table, with the average of the data above and below that integer in the table
Hello JJ, You can use logical indexing to find all the index values containing the value "999". You can replace these values wi...
11 months ago | 0
| accepted
Answered
为什么这段数模代码反复调试后仍然出错？
Hello, In the first code in the line "f=-d2f+df" the variables "-d2f" and "df" are symbolic expressions so the variable "f" th...
为什么这段数模代码反复调试后仍然出错？
Hello, In the first code in the line "f=-d2f+df" the variables "-d2f" and "df" are symbolic expressions so the variable "f" th...
11 months ago | 0
Answered
Integration over different sampling rates
Hello Kyle, You can get the correct value for the area by giving the time vector also to the "trapz" function. It gives the int...
Integration over different sampling rates
Hello Kyle, You can get the correct value for the area by giving the time vector also to the "trapz" function. It gives the int...
11 months ago | 0
| accepted
Answered
Finding Coefficients in Bspline is making a problem ?
Hello Rohitasya, The code you have written is accuarte for calculating the coeffecients.The following code achieves the same re...
Finding Coefficients in Bspline is making a problem ?
Hello Rohitasya, The code you have written is accuarte for calculating the coeffecients.The following code achieves the same re...
11 months ago | 0
Answered
correct for these codes and help me to get running codes
Hello, I made the following changes to the code to make the array sizes compatible. rxSignal = awgn(H * txSymbols', SNR_dB, 'm...
correct for these codes and help me to get running codes
Hello, I made the following changes to the code to make the array sizes compatible. rxSignal = awgn(H * txSymbols', SNR_dB, 'm...
11 months ago | 0
Answered
setting up infinite sequence and plotting
Hello Robert, I am assuming that you want to sum 1/(n^3+1) and not n^3+1 since the sum for n^3+1 tends to infinity as n moves t...
setting up infinite sequence and plotting
Hello Robert, I am assuming that you want to sum 1/(n^3+1) and not n^3+1 since the sum for n^3+1 tends to infinity as n moves t...
12 months ago | 0
