Community Profile

photo

Abdelwahab Afifi


Last seen: Today
25 total contributions since 2019

Abdelwahab Afifi's Badges

  • Thankful Level 2
  • First Answer
  • First Review

View details...

Contributions in
View by

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...

1 giorno ago | 0 answers | 0

0

answers

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 ...

2 mesi 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...

3 mesi 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...

3 mesi 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); ...

3 mesi 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 ...

4 mesi 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

4 mesi 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...

4 mesi 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...

4 mesi 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...

6 mesi 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...

6 mesi 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)

6 mesi 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...

7 mesi 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,...

9 mesi 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 ...

10 mesi 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 .....

10 mesi 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...

10 mesi 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...

10 mesi 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...

circa un anno 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...

circa un anno 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

circa un anno ago | 1 answer | 0

1

answer

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...

circa un anno 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...

circa un anno 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...

circa un anno ago | 1 answer | 0

1

answer