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Ahmed Grera


Last seen: 3 years ago |  Active since 2017

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Ahmed M. A. Annekaa

Engineer in college of electronic technology, Bani Walid -Libya.
Interested in Microstrip Antenna and Signal Processing.

Skills: Windows xp, 7,8 and 10, dealing with Android and IOS, MATLAB, HFSS, Multisim, Data and Communications networks installation and Microsoft Office Suite: Word, Excel, PowerPoint, and Adobe Photoshop.

Certificates: Mini MBA, ICDL, Optical fiber, HFSS (for antennas design) and experience in WiMax maintenance.

Email: ahmedgrera88@gmail.com
Phone: 00218928073023
facebook: https://www.facebook.com/ahmed.grere
LinkedIn: https://www.linkedin.com/feed/?trk=

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Question


How do filtic and filter functions work ?
% y[n]+y[n-1]-6y[n-2]=x[n] % x[n]=8u[n] % y[-1]=1, y[-2]=-1

6 years ago | 1 answer | 0

1

answer

Question


How we can apply Z-transform of the following operators in MATLAB ?
1- x(n)=δ(n) 2- δ(n-4) 3- 2^n u(n-3)

6 years ago | 0 answers | 0

0

answers

Question


How we can enter the following operators in MATLAB ?
1- x(n)=δ(n) 2- δ(n-4) 3- 2^n u(n-3)

6 years ago | 1 answer | 0

1

answer

Answered
How can i implement galois counter mode (GCM) in matlab?
Hi Darsana P M You can retype it like this: clc; clear all; close all; x=[0 1 1 0 1 1 0 1]; Z=[0 0 0 0 0 0 ...

7 years ago | 0

| accepted

Question


I have a question in image processing, this code shows how to add noise to the image and then retrieve it again ... The problem when retrieving the image error occurs and show the image that was retrieved in white
img = imread( ('eight.tif') ); % read image, use gray-level images here. A = imnoise(img,'Gaussian',0,1); IMG = fft2( im...

7 years ago | 2 answers | 0

2

answers

Question


Error using .* Integers can only be combined with integers of the same class, or scalar doubles.
clc clear all close all lena = imread('eight.tif'); A = fftshift(fft2(lena)); S = imnoise(lena,'Gaussian',0...

7 years ago | 1 answer | 0

1

answer

Answered
I have a matrix which is 1000 columns and 3621 rows, how do I take the mean of each row?
clc clear all a=[1 2 3;4 5 6;7 8 9] % Replace this matrix with your matrix mean(a,2)

7 years ago | 0

Question


what is the wrong in this code?
clc clear all close all lena = imread('eight.tif'); A = fftshift(fft2(lena)); S = imnoise(lena,'Gaussian',...

7 years ago | 2 answers | 0

2

answers

Answered
I am new to Matlab and I am looking for help regarding this questions as attached
clc clear all a=zeros(8,5); % zeros matrix for i=1:1:40 a(i)=i; end b=a' % transpose of matrix (a)

7 years ago | 0

Question


I have a question in image processing, this code shows how to add noise to the image and then retrieve it again ... The problem when retrieving the image error occurs and show the image that was retrieved in white
img = imread( ('eight.tif') ); % read image, use gray-level images here. A = imnoise(img,'Gaussian',0,1); IMG = fft2( im...

7 years ago | 2 answers | 0

2

answers