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# Hoda El Mahallawy

22 total contributions since 2009

Professional Interests: painting

Contributions in
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Posted

logdet function in SDPT
Hello, does anyone know the links of helpful materials on how to use SDPT and Yalmip to maximize a logdet function with some co...

5 years ago | 1600 views

Responded

Re: M-QAM and M-PSK
hi, ok, I have generated a number of bits and then used a function called reshape in order to group them to do the QAM modulatio...

6 years ago | 4813 views

Posted

M-QAM and M-PSK
hi, I need a matlab code to simulate the Bit error rate vs. Eb/No for BPSK, QPSK and 8-PSK as well as, 4-QAM, 16-QAM and 64 QAM....

6 years ago | 4813 views

Posted

Good day, I need to know how to implement a flat fading channel in Matlab. Thank you

7 years ago | 1297 views

Posted

7 years ago | 1313 views

Posted

crossover in GA
Hi all, I need to perform crossover between any number of parents, not only one. All the files of GA I have seen so far, the cro...

7 years ago | 5327 views

Responded

Re: combinations of vectors
yes my example is working fine. thank you so much. I just want to understand npermutek in detail, so I will e-mail you instead i...

7 years ago | 7291 views

Responded

Re: combinations of vectors
Thanks I understood this whan I saw the first reply, but it was after writing the question again. Sorry for that. another thing....

7 years ago | 7291 views

Responded

Re: combinations of vectors

7 years ago | 7291 views

Responded

Re: combinations of vectors
thanks, but one more thing. How can I use length when getting the index? doesn't the index here correspond to the position of th...

7 years ago | 7291 views

Responded

Re: combinations of vectors
one more thing, do u mean by [1 2 3 4] element 1, 2, 3 and 4 in all vectors or just the elemnets in the first vector? I mean if ...

7 years ago | 7291 views

Responded

Re: combinations of vectors
Thanks for replying What's the function nume1 that's used for calculating the index as it's not there Can you please send it to...

7 years ago | 7291 views

Responded

Re: combinations of vectors
Thanks again, Is [1 2 3] corresponds to the number of elements or the elements in the first vector? Also, you are calling a func...

7 years ago | 7291 views

Responded

Re: combinations of vectors
Thanks so much again, but I have one question from the way u r calling the function, why do you add a fourth element to all vect...

7 years ago | 7291 views

Responded

Re: combinations of vectors

7 years ago | 7291 views

Responded

Re: combinations of vectors
say I have 4 vectors not 3, where: Vec1=[x01 x11 x12] Vec2=[x02 x21 x22] vec3=[x03 x31 x32] vec4=[x04 x41 x42] I wnat to have no...

7 years ago | 7291 views

Responded

Re: combinations of vectors
there's sth else, I don't want the first element of the first vector to be taken with the first elemnt of the second vector or t...

7 years ago | 7291 views

Posted

combinations of vectors
Hi, I wanna know how to get the combinations of the elements of 3 vectors, each of length 4?. This means that I have 4^3 combina...

7 years ago | 7291 views

Posted

combinations of vectors
Hi, I wanna know how to create the combinations of 3 vectors, each of length four?, the total number of combinations will be 4^3...

7 years ago | 1355 views

Posted

tree construction in Matlab
Hi all, I wanna know how to construct a search tree using Matlab. Can you please write a simple code for me? Thanks

7 years ago | 8088 views

Responded

Re: optimization of positions using genetic algorithm
I know that it's hard to understand me when I don't have an objective function and you don't actually know what I wanna do. I ju...

7 years ago | 2701 views

Posted

optimization of positions using genetic algorithm
I want a code to optimize the positions(x,y) coordinates, whatever the objective function is as I need to understand how this is...

7 years ago | 2701 views