# vidyesh

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export data from workspace to simulink

Hi Ahmed There are several ways to load this data for your simulation, and they are all documented here: Provide Signal Data f...

14 days ago | 0

rng and randn on matlab

Hi mingcheng, Since channel coeffecients are random in nature, their values can be extremely small at time. Also please note t...

14 days ago | 0

Pulse shaping on BER

Hi Rory, The issue lies in the below line of code: txSig = conv(over_data,half_Sine, 'same'); Are you trying to simulate th...

18 days ago | 0

Add x1[n] = exp(−n/4), −4 ≤ n ≤ 8 with x2[n] = cos(πn/4), 0 ≤ n ≤ 12. Plot x1[n], x2[n], and y[n].

Hi Albert, The starting point would be to decide the period of signals/sample spacings. I am assuming 0.01. 1) define 'n' bet...

19 days ago | 0

How to add awgn to gfsk?

Hi Firas, To add awgn to the signal, you can use the 'AWGN' block: https://www.mathworks.com/help/comm/ref/awgnchannel.html ...

19 days ago | 0

SNR comparison real/complex signal

Hi Florian, Here is my understanding of the issue: The SNR is the ratio of signal power to noise power. When converting from ...

19 days ago | 0

how to plot the auto and cross correlation of walsh hadamard codes

Hello Yas Mine, To perform correlation between two signals, you can use ‘xcorr’ function. In ‘xcorr’, if you provide only one ...

29 days ago | 0

How do I assign frequency values to the obtained fft values without plotting . I need to know the value of the peak at 16Hz for further calculations.

Hi Yogesh, You can use the max function to find the value of the peak and its index in the array. Then use the index to get th...

5 months ago | 0

| accepted

Can I change the Simulink default settings in bode plots like frequency unit in Hz instead rad/s and define a fix frequency range in "Model Linearizer"?

Hi Rai, You can change the unit of frequency in the plots using the 'Toolbox Preferences Editor'. https://www.mathworks.com/he...

5 months ago | 0

Can I change a resistors resistance during simulation in simulink?

Hi Vágó, You can accomplish this by using a Variable Resistor block: https://www.mathworks.com/help/simscape/ref/variableresi...

5 months ago | 0

| accepted

Why is SNR independent of the received signal power?

Hi, The nosie parameter n is inversely dependent on SNR value in the given example. Therefore for higer SNR, the noise values a...

5 months ago | 0

How do I add AWGN noise to a RF Signal at the receiver ?

Hi Narayan, 1.So, How can we relate those two things ? In the matlab example code, N0 is calculated based on the SNR, NFFT and ...

6 months ago | 0

| accepted

how can I know which data types I need precisely?

Hi SimTec, Your question touches on the trade off between accuracy and computational cost of a system. Single precision, with i...

6 months ago | 0

Digital Butterworth Bandpass Filter

Hi Hassan, The error you're encountering is due to the cutoff frequencies being outside the expected range for the buttord func...

6 months ago | 0

Inverse of xcorr?

Hi Mariano, Inverse of the cross-correlation can be calculated using the deconv function (as suggested by Jonas). Note that f...

6 months ago | 0

LTE Toolbox Index Returning Functions

Hi Hakan, The indices returned by the ltePUCCH1DRSIndices function are organized according to the PUCCH format 1 DRS modulation...

6 months ago | 0

Obtaining the Percentage Error from a set of data

Hello Hasan, Based on the requirements for combining seven matrices, there are two scenarios to consider depending on the unifo...

6 months ago | 0

MLSE Equalizer Traceback depth and BER

Hello Nicola, The effectiveness of Traceback depth 20 in your MLSE Equalizer setup for a Rayleigh fading channel wit...

6 months ago | 0

Comparing Numerical and Monte carlo simulation for Erlang B loss formular

Hello Daniel, The discrepancy in your results likely stems from generating random values for the Poisson arrival rate (λ) i...

6 months ago | 0

discrete wavelet transform data format

Hello, Many wavelet functions are designed to analyze patterns or frequencies in your data, often without the need for direc...

6 months ago | 0

| accepted

Data length error in OFDM Simulink

Hello Rajmouli, I understand you're encountering an error when calculating the error rate, stemming from a mismatch in the l...

7 months ago | 0

How do I further compute hermitian symmetry IFFT

Hi Marcin, I understand you're interested in the differences between manually constructing a Hermitian-symmetrical matrix f...

7 months ago | 0

How to filter by row and print out different row if within boundary.

Hi Santiago, I understand the problem as follows: we have a set of trials, each consisting of 5 columns. The goal is to che...

7 months ago | 0

how to use the 'histfit' function for cell arrays?

Hello, I understand that you're looking to create a histogram for all the values within your cell array ‘S7’ combined, and ...

7 months ago | 0

recursive fft function- return if function

Hi Liron, It looks like your recursive FFT function is almost correct, but it's currently appending extra values at the end ...

7 months ago | 0

Performance Measures - Comparing measurement data with simulation data

Hi Ali, I am assuming you want to perform mathematical operations on data that share the same timestamps. To accomplish this...

8 months ago | 0

The N-Point Moving Average (MA) Filter

Hello, I see that you're working on implementing an N-point moving average filter in MATLAB and are encountering a couple of is...

8 months ago | 0

Why N point FFT of a under-sampled signal in time domain is worse than only a N point FFT of the time domain signal (Not resampled)

Hi Tworit, It is my understanding that you are trying to discern why an N-point FFT of an undersampled signal yields worse ...

8 months ago | 0

16-QAM constilation

Hi Vikas, For generating 16-QAM symbols for a 2x2 MIMO system with equal probability using the rand function in MATLAB, you can...

8 months ago | 0

Why 'Port width mismatch' error occurred?

Hi Patryk, It seems there might be a small typo in your function block. The correct function name is atan2d, not 'atand2'. Afte...

8 months ago | 0