Chaitanya Mallela

Last seen: 10 jours ago

MathWorks

56 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.

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Answered
how to use findpeaks in fft (with for,if,else)
You can try findpeaks function with Name Value pairs such as 'MinPeaksHeight', 'MinPeakDistance' and 'NPeaks' Refer the docume...

22 jours ago | 0

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Simulink compilation doesn't find string.h
you can specify the C header file for simulation in the Simulation Target pane of the Model Configuration Parameters dialog box...

22 jours ago | 0

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Difference between consecutive outputs of Simulink clock block is not the fixed simulation step
Refer the Documentation for Fixed Step Solver https://www.mathworks.com/help/simulink/gui/fixed-step-size-fundamental-sample-t...

22 jours ago | 0

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How to make 1-D Look-Up Table block run repeatedly
You can use Counter block before 1-D Look-Up Table block with Reset port enabled. When count reaches maximum value Reset port is...

22 jours ago | 0

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5g NR PBCH DMRS & SSS channel estimatiom
Hi Chanuk, You can use edit option in the MATLAB command window to know more about the functionality of 'nrChannelEstimate' fu...

28 jours ago | 0

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Error in simulink, the upper bound is not specified
you must specify a numerical upperbound in the size column in Ports and Data Manager to make Simulink realize a variable sized a...

28 jours ago | 0

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Problems to export Scope Data variable to MATLAB workspace via timer function
To export the calculated variables into the workspace, consider returning the output from sim function to load into the MATLAB w...

29 jours ago | 0

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Logical Indexing in Simulink
Hi Femi, The output_matrix must be declared variable size while using this logical indexing in a MATLAB function block. When yo...

29 jours ago | 1

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Answered
How to Simulate the transmission of the audio signal using AM over AWGN channel by using a MATLAB code
Consider an audio file testSignal.wav . Use audioread function to read the audio file [y,Fs] = audioread('testSignal.wav'); Co...

30 jours ago | 0

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Running classes on a FPGA
Refer the documentation for getting started with HDL Code generation and deployment workflow from MATLAB. https://www.mathworks...

environ un mois ago | 0

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How can I find an optimised set of vectors
Refer the documentation for the Constrained Optimization Algorithms https://www.mathworks.com/help/optim/ug/constrained-nonline...

environ un mois ago | 0

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NR Intercell Interference Modeling
It seems like the code is being executed without including the helper function file hNRIntercellInterferenceValidateConfig.m T...

environ un mois ago | 0

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Answered
Simulink doesn't export data when called by a matlab-function
To export the calculated variables into the workspace, consider taking the sim function inside the timer function as out = sim(...

environ un mois ago | 0

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Simulink Entity Splitting Problem
You can use entity output switch to divide entites based on probability values Set a probabity vector and assign the port numbe...

environ un mois ago | 0

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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...

environ 2 mois ago | 0

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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 ...

environ 2 mois ago | 0

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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')

environ 2 mois ago | 0

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Answered
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...

3 mois 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...

3 mois 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...

3 mois 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...

3 mois 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 ...

3 mois 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...

3 mois 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 ...

3 mois 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...

3 mois ago | 0

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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...

3 mois 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...

3 mois 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...

3 mois 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 ...

3 mois 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 ...

3 mois ago | 0