Community Profile

Ahmed Grera

10 total contributions since 2017

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

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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

más de 2 años ago | 1 answer | 0

1

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)

más de 2 años ago | 0 answers | 0

0

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)

más de 2 años ago | 1 answer | 0

1

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 ...

más de 3 años 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...

más de 3 años ago | 2 answers | 0

2

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...

más de 3 años ago | 1 answer | 0

1

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)

más de 3 años 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',...

más de 3 años ago | 2 answers | 0

2

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)

más de 3 años 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...

más de 3 años ago | 2 answers | 0