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Chaitanya Mallela


Last seen: Today

MathWorks

42 total contributions since 2020

I am Application Support Engineer at Mathworks. My responsibility is to provide the best support for an application like ML, Signal Processing and Communication, Image Processing.
Disclaimer: Any articles/ideas/opinions here are my own and in no way reflect that of Mathworks.

Chaitanya Mallela's Badges

  • 3 Month Streak
  • Revival Level 3
  • Knowledgeable Level 2
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Answered
How to call a matlab function?
The above code cannot be executed as lim is not defined. Try initializing lim either as a variable or function with integer retu...

6 days ago | 0

Answered
Generate Code for single model reference in other parent model
'slbuild' function accepts model name, normal subsystem path and handle to model and subsystem. Here reference subsystem cannot ...

7 days ago | 0

Answered
How to "Monitor and Tune" Simulink Model from MATLAB
You can try out this command for Monitor and Tune mode set_param(gcs, 'SimulationMode', 'external')

7 days ago | 0

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how to add velocity to the generated modulated signal?
Velocity effect can be induced in the model when the input signal vary as function of both time and displacement. The function p...

1 month ago | 0

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How to gaussian white noise with mean, variance and autocorrelation function?
The White Gaussian Noise should contain a multivariate random numbers with three different realizations, each realization with m...

1 month ago | 0

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Answered
Getting error message for fast Fourier transform from simulink
It seems like data80 does not belong to the valid input types of fft function.You can use either double, int32, uint32 or logica...

1 month ago | 0

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Create vector with values from the same source
Yes, it would be possible if you are transmitting the truth table data serially using buffer block and conditionally logging the...

1 month ago | 0

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Nyquist plot - Changing the graph axes
From the basic graph, you can observe that the axis points are different for real and imaginary. Try setting the equal axis and ...

1 month ago | 0

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1-D vector (either nx1 or 1xn) giving matrix output of nxn in Simulink
yout logs the data from the constant block at every simulation time step. If one dimensional vector is given in the block, the r...

1 month ago | 0

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Formatting .dat gps file
To read this dat file as a table, the variables have to be aligned as column vectors. Try modifying the dat file as four column ...

1 month ago | 0

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Output from simulink to matlab file append each run
To file block overwrites the variable every time when simulated. To append the data row wise after every simulation either you c...

1 month ago | 0

Answered
frequency of wind speed in a particular direction
You can use table function to create a table from the workspace variables T = table(windSpeed,Direction); Also refer the docum...

1 month ago | 0

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Answered
generate string signal in simulink
Signal generator block does not accept external inputs apart from time. Try to convert character ASCII values to binary using en...

1 month ago | 0

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How to programmatically change tunable masked parameters while a simulation is running?
I have brought the issue of 'Programmatically changing the tunable masked parameters while running the model' to the notice of o...

1 month ago | 0

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How to use the convolution function rather than filter for signal
filter function gives the filter response for both IIR and FIR systems whereas conv function performs linear convolution of the ...

1 month ago | 0

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Answered
Hi currently im doing a mod and demod of FSK signals and i have to add AWGN into it but cant figure it out can someone help and identify the error, currently im using the code below:
awgn function considers input vector signal, Signal to Noise Ratio (SNR) and Signal power as a general valid attributes. Refer ...

2 months ago | 0

Answered
Variable of Integration in Simulink
If the variable x is a function of time x(t), you can use Integration by substitution method ...

2 months ago | 0

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Answered
I'm trying to implement DWT-OFDM in Matlab. But Matlab shows the message, only real value can be available for IDWT.
idwt function accepts Approximate coefficients and Detail coefficients corresponding to the wavelet as a real valued vectors. Tr...

2 months ago | 0

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OFDM implementation in Simulink
Create a cyclic prefix extension to the serial IFFT symbols with the help of Selector and Vector Concatenate blocks (extract fro...

2 months ago | 0

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Why the spectrum I get from 'Visualization'-'Frequency response' in 'comm.RayleighChannel' is sometimes different from the spectrum I culculate from 'PathGainsOutputPort'?
Seed property corresponds to the generation of random stream.Seed serves as a unique identifier of a pseudo-random sequence i.e....

2 months ago | 0

Answered
Filtering using FFT for audio signal
Refer the link https://www.mathworks.com/matlabcentral/answers/503999-filtering-for-multiple-band-of-frequncies which describe...

3 months ago | 0

Answered
Markers enabled to highlight data
Refer Constant Sample Time section in the documentation https://www.mathworks.com/help/simulink/ug/types-of-sample-time.html

3 months ago | 0

Answered
How to show link to block in custom error Diagnostic Viewer
The command to display the link to the current block in the Diagnostic Viewer is as shown sldiagviewer.reportError(sprintf('<a ...

4 months ago | 2

Answered
Sub carrier mapping and IFFT signal formation
Refer the documentation https://www.mathworks.com/help/comm/ref/comm.ofdmmodulator-system-object.html https://www.mathworks.co...

4 months ago | 0

Answered
Replacing array elements with cell elements
Once a huffman dictionary created for an alphanumeric data from the message with the probability of occurences obtained from the...

4 months ago | 0

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Cross power spectrum MATLAB
Error occured due to the incorrect matrix dimensions of f1 and vec_Vph in the scatter plot. Try checking the code by modifying t...

4 months ago | 0

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How to Plot and label the multipath impulse response of the channel.
Refer the documentation https://www.mathworks.com/help/comm/examples/multipath-fading-channel.html

4 months ago | 0

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Find index of specific rows of a table with value greater than a threshold
Try the code by adding (initial index - 1) to the find function ind = find(T{initial_index:final_index,column_index} > threshol...

4 months ago | 0

Answered
getting frequency data to time data
ifft function transforms the complex signal data from frequency domain to time domain where the time difference between the succ...

4 months ago | 0

Answered
where can i find for perfect coding of OTSU thresholding
Refer the documentation https://www.mathworks.com/help/images/ref/graythresh.html https://www.mathworks.com/help/images/ref/m...

4 months ago | 0

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