Abdelwahab Afifi

Last seen: 8 days ago

29 total contributions since 2019

Abdelwahab Afifi's Badges

Question

How to train "timedelaynet" using "trainNetwork" function in Deep Learning Toolbox?
I have build a Time delay neural network and I wanna avoid use "train" function, and I want to train it using "trainNetwork" fun...

1 month ago | 0 answers | 0

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Training Time delay neural networks with Parallel and GPU Computing ?
I’m trying to speed up the training of my 'timedelaynet' by using the GPU support that ÷ get from the parallel computing toolb...

2 months ago | 1 answer | 0

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answer

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...

3 months ago | 1 answer | 0

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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...

5 months ago | 1 answer | 0

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answer

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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...

6 months ago | 1 answer | 0

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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 ...

8 months ago | 1 answer | 0

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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...

9 months ago | 1 answer | 0

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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...

9 months ago | 1 answer | 0

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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); ...

9 months ago | 1 answer | 0

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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 ...

10 months ago | 1 answer | 0

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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

10 months ago | 1 answer | 0

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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...

10 months ago | 0 answers | 0

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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...

10 months ago | 0 answers | 0

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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...

11 months ago | 1 answer | 0

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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...

11 months ago | 0 answers | 0

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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)

11 months ago | 0

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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...

1 year ago | 0 answers | 0

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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,...

1 year ago | 1 answer | 0

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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

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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

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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

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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

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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

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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

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Question

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

1 year ago | 1 answer | 0

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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

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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

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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

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answer

Abdelwahab Afifi

Last seen: 8 days ago

Abdelwahab Afifi's Badges

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