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Abdelwahab Afifi


Last seen: 5 days ago
27 total contributions since 2019

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Question


How to run Python script in MATLAB?
I'm trying to run python script using MATLAB The python script code.py is used for Saving Model Weights and Architecture Togeth...

11 days ago | 1 answer | 0

1

answer

Question


How to generate wide band OFDM signal using signal aggregation method?
I'm able to genrate OFDM signal with BW=20 MHz as shown in the following figure I wanna build wide band OFDM signal by signal...

3 months ago | 1 answer | 0

1

answer

Question


How to control the stopband attenuation of the resample function ?
I'm using resample function to upsample my data. I need to increase the stop band attenuation to improve the Adjacent channel po...

3 months ago | 1 answer | 0

1

answer

Question


How can I edit Live editor sheet when I access MATLAB remotely?
I use Chrome Remote Desktop to access my PC, However, when I double click any live editor sheet it appears as a white sheet and ...

5 months ago | 1 answer | 0

1

answer

Question


How to build Time delay Neural network using deep learning layers?
I have built this architecture using shallow Time-Delay Neural Networks. where X and Y are the inputs which are time series ve...

6 months ago | 1 answer | 0

1

answer

Question


How to achieve the stable training for time delay neural network ?
I have build Time delay neural network The training performance is changed every time I train it. I tried to set the initial we...

6 months ago | 1 answer | 0

1

answer

Question


create a variable whose name is changed over iteration number in for loop ?
I have my own function that able to build and train Time delay Neural network [Trained_Model]=Train_RVTDNN(NN, Input, target); ...

6 months ago | 1 answer | 0

1

answer

Question


Deleting some layers from trained neural network model
I have trained a big neural network NN which has the structure [20 2 20] as shown in the first figure. After training, I wanna ...

7 months ago | 1 answer | 0

1

answer

Question


How can I freeze specific weights of Neural network model?
I need to set some specific weights before training, and keep these weights fixed during training

7 months ago | 1 answer | 0

1

answer

Question


"Relu" activation function and "Adam" optimizer for Time delay neural network
I wanna design Time delay neural network, but I can't find the leaky rectified linear unit (Relu) activation function and "Adam...

7 months ago | 0 answers | 0

0

answers

Question


Build Time delay neural network using Deep learning tool box
I wanna build my own Deep neural network which accepts two inputs and estimate two outputs. The input signals of the first layer...

7 months ago | 0 answers | 0

0

answers

Question


workaround for handling a large number of variables in the objective function of lsqnonlin
I want to optimize my objective function w0=zeros(m,1) [w,resnorm] = lsqnonlin(@myfun,w0) How can I dynamically define weight...

9 months ago | 1 answer | 0

1

answer

Question


Defining my objective function using vector of variables for lsqnonlin
I wanna use lsqnonlin for estimating vector of variables of length 6 function F = myfun() global X % regression matrix of...

9 months ago | 0 answers | 0

0

answers

Answered
optimization with many variables - lsqnonlin
I wanna avoid defining these large variables manually. Is there any simple method for this? x(1) x(2) x(3) ...... x(n)

9 months ago | 0

Question


How to generate polynomial matrix in classification problems ?
I have the fllowing samples [1 2] , [2 0] , [1 1], [3 1], [2 3], [3 3] which correspond to labels y : {0, 0, 0, 1, 1, 1} resp...

10 months ago | 0 answers | 0

0

answers

Question


The Number of coefficents of Time delay neural network
for the following Time delay neural network clc; clear all; close all; [X,T] = simpleseries_dataset; net1 = timedelaynet(1:2,...

12 months ago | 1 answer | 0

1

answer

Question


combining two neural networks (net1 is trained & net2 is untrained) in one bigger network
I have two shallow neural network models net1, net2. I have a trained net1. Then I need to connect a net2 to a net1. Hence I ...

1 year ago | 2 answers | 0

2

answers

Question


Set a specific weight for a connection in neural networks
I have already build my neural network. I wanna set a specific weight for the conection from layer i to layer j foe example .....

1 year ago | 1 answer | 0

1

answer

Question


How to define a multivariable function (for instance an anonymous function) of a number of variables that varies according to the size of an array variable?
I have two vectors input and output ,where is the number of samples I want to solve this problem as nonlinear least-squares...

1 year ago | 1 answer | 0

1

answer

Question


code gernation error using CUDA
I'm trying code generation Using the GPU Coder App as in the folowing link: https://www.mathworks.com/help/gpucoder/gs/gpu-cod...

1 year ago | 1 answer | 0

1

answer

Question


what is the problem of the Power Amplifier curve for this WCDMA measurements ?
I used the follwing link to get the data sets of input and output of PA to simluate PA model https://www.mathworks.com/help/si...

1 year ago | 0 answers | 0

0

answers

Answered
Digital Predistortion for PA model
have you find the app that is used in this link ? https://www.mathworks.com/videos/digital-predistortion-for-power-amplifiers-6...

1 year ago | 0

Question


How can I design flat magnitude response IIR filter ?
I want to design flat magnitude response IIR filter to simulate the memory effect of High Power Amplifier nonlinearities

1 year ago | 1 answer | 0

1

answer

Question


How can I design such this Digital Filter using MALAB not simulink?

1 year ago | 1 answer | 0

1

answer

Question


How can I Import complex vector to SIMULINK to analyze it using spectrum analyzer?
1- I'm trying to use From work space to import complex vector to simulink 2- I get this error message: "Unsupported input f...

1 year ago | 1 answer | 0

1

answer

Question


How can I specify AWGN block in SIMULINK?
How can I estimate the parameters of AWGN block for OFDM system with data samples = 52 64 subcarrier cyclic prefix=16 nuber...

1 year ago | 1 answer | 0

1

answer

Question


How can I change signal Constellation Equation to get QAM not PSK?
I'm trying to Build my OFDM system using Simulink. How can i change the equation of Constellation to get QAM not PSK as shown in...

1 year ago | 1 answer | 0

1

answer