# Abdelwahab Afifi

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**Content Feed**

Question

Obtaining CSI of the guard-band subcarrier in 5G toolbox

Is it possible to perform channel estimation for all subcarriers including (in-band & guard-band subcarriers) using 5G toolbox ?...

5 months ago | 0 answers | 0

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answersQuestion

CSI of the guard-band subcarrier in 5G channel

my ultimate goal is to use 5G toolbox to estimate the compete channel response (for in-band subcarriers & guard-band subcarrier)...

5 months ago | 0 answers | 0

### 0

answersQuestion

How to get such legend in MATLAB?

As you can see in the attached Figure, only 6 legends are used. (not 8 = number of curves). How to do so?

1 year ago | 1 answer | 0

### 1

answerQuestion

How to plot heat map using MATLAB?

I have matrix with dimensions [4096, 181], I want to draw a heatmap for such matrix as in the following figure. How can i do so?...

1 year ago | 1 answer | 0

### 1

answerQuestion

Training Time delay Neural Network (tdnn) using Adam optimizer

I have built the following network using tdnn class in deep learning toolbox. Now I wanna train it using 'adam' optimizer. Is it...

1 year ago | 1 answer | 0

### 1

answerHow to "prune" a one hidden layer NN such that the off diagonal elements of the weights, that is, "net.IW{1}" and "net.LW{2}", are zeros?

https://uk.mathworks.com/help/deeplearning/ref/prune.html

2 years ago | 0

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...

2 years ago | 1 answer | 0

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answerQuestion

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 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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 ...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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); ...

2 years ago | 1 answer | 0

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answerQuestion

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 ...

2 years ago | 1 answer | 0

### 1

answerQuestion

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

2 years ago | 1 answer | 0

### 1

answerQuestion

"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...

2 years ago | 0 answers | 0

### 0

answersQuestion

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...

2 years ago | 0 answers | 0

### 0

answersQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 0 answers | 1

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answersoptimization 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)

2 years 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...

3 years ago | 0 answers | 0

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answersQuestion

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,...

3 years ago | 1 answer | 0

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answerQuestion

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 ...

3 years ago | 2 answers | 1

### 2

answersQuestion

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 .....

3 years ago | 2 answers | 0

### 2

answersQuestion

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...

3 years ago | 1 answer | 0

### 1

answerQuestion

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...

3 years ago | 1 answer | 0

### 1

answerQuestion

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...

3 years ago | 0 answers | 0