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sai charan sampara


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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...

5日 前 | 0

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GMSK Bit error rate plot
Hi, The following code might help: hMod = comm.GMSKModulator('BitInput', true, 'InitialPhaseOffset',0); hDemod = comm.GMSKDem...

7日 前 | 0

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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...

8日 前 | 0

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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,...

8日 前 | 1

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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*(...

8日 前 | 0

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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...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 0

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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 ...

約1ヶ月 前 | 1

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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 ...

約2ヶ月 前 | 0

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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"....

約2ヶ月 前 | 1

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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...

7ヶ月 前 | 0

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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...

7ヶ月 前 | 0

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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...

7ヶ月 前 | 0

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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...

7ヶ月 前 | 0

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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...

7ヶ月 前 | 0

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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...

7ヶ月 前 | 0

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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...

8ヶ月 前 | 0

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How to assign pair of values to a single aeeay in the matrix using two different vectors
Hi Yogesh The following code might help you: fsine=50e6:0.4e9:3e9 Vp=0:0.5:3 M=zeros(7,8); for idx1=1:7 for idx2=1...

8ヶ月 前 | 0

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Como obtener la función de transferencia en controles
Hi Jose, You can use the "tf" function in MATLAB to obtain a transfer function of a system. This function returns a transfer fu...

8ヶ月 前 | 0

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How to change the spectrogram magnitude to linear?
Hello, The "spectrogram" function in MATLAB returns the Short-Time Fourier Transform(STFT) of the input signal. It is used to a...

8ヶ月 前 | 0

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Separate graph arrows for two y-axes on the matlab
Hello, You can try to acheive a similar result by using the "annotations" feature in MATLAB. The following code shows an exampl...

8ヶ月 前 | 1

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How do I mesh a matlab model
Hello There need not be inverted commas over the geometry type in the line where "femodel" is defined. I have increased the "Hm...

8ヶ月 前 | 2

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How to correct the recording of a daamaged accelerometer in earthquake analysis
Hello, A possible solution can be to remove the mean over a small interval from the existing data to change the data to be cent...

8ヶ月 前 | 0

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Calculation of channel capacity
Hello Zaref, The above code you provided appears to be correct for plotting the graph of channel capacity in SNR(dB) provided t...

8ヶ月 前 | 0

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Why does the "Matrix dimensions must agree" error persists?
Hello Walter, When using "plot" in the format of "plot(ax,x,y)" the size of the variable "x" and "y" must be same. In your case...

10ヶ月 前 | 0

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I want to count the number of 0s in a binary sequence which occurs for n number of times, where n=1:25.
Hello Dwijraj, You can use "find" to locate the positions of "1" in the array and then the difference in position of 2 consecut...

10ヶ月 前 | 1

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Cannot find this component in Simulink
Hello Axel, The block might be a "Repeating Sequence Stair" block with [1,0] as the "Vector of output values" in the Block Para...

10ヶ月 前 | 0

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how to get basis vector from eigenvalues
Hello, You can get the 2 basis vectors by simply sorting the eigen values in decreasing order and then usig the sorted indexes ...

10ヶ月 前 | 0

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how can i solve eps y''+ mu a(x) y'-b(x)y=f(x) with boundary condition y(0)=y(1)=0
Hello Dhayalan, The equations of the above form can be solved by using "diff" and "dsolve" functions in MATLAB. The "diff" func...

10ヶ月 前 | 0

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Matrix does not want to multiply and gives an error when I multiply a 3x3 matrix with a 3x1 matrix
Hello Gihahn, In line 2 "mat1" is not defined. If you want to have the inverse of "A" replace it with A. Also the size of "B" i...

10ヶ月 前 | 0

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