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itsik


Active since 2011

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Answered
problem to show the axis
i know but how to use ylim? like if i have this plot(t,x1,t,x2)

ungefär 13 år ago | 0

Question


problem to show the axis
hello to u! i have a problem when i make a plot of graph and in 'y' axis i have parameters between 0:300 and i want to show on...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


white gaussian noise
hello to u! i have a problem when i use awgn lets say i have this signal x=cos(2*pi*f*t) and then i do that x_noise=awg...

ungefär 13 år ago | 1 answer | 0

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answer

Question


Buffer input error in simulink
hi to all i'm working with simulink, and im trying to see the signal with spectrum scope and i get an error message : ...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


Problem with simulink functions
hello to all im working with simulink, and i have a question i want to make a block of " matlab function" and i dont ...

ungefär 13 år ago | 1 answer | 0

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answer

Answered
trying to accounting the number of zeros in random script
thanks all of u but i used this code: a=randint(1000,1); numel(a(a==0)) and it helped me!!!

ungefär 13 år ago | 0

Question


trying to accounting the number of zeros in random script
hello lets say i have this random script w=randint(1000,1) and i want to know how many 'zeros' there are in this script wh...

ungefär 13 år ago | 3 answers | 0

3

answers

Question


bit eror rate
hello lets say i have this random bits bits= randint(1,1000) and after few math functions i get x=(1,1000) how do i ...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


problem to make an ofdm modulation
hello if i have a 4qam symbols and i want to make ofdm modulation to them is that corect to make that before i make the ifft:...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


how to convert function from time domain to frequency domain?
hello i have this function: H(w)=(1+a)/a+bz+c while a,b,c are function that dipend on 'w' like a=jwc b=cosh(w*l) so ...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


Question about FFT
hello to all supposed that i have a matrix of 10 values [1x10] and i want to sample it by IFFT to get 1000 samples ,i get a m...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


problem to make fft
hello i have this code and i want to make the fft for it to make the same bits as i start with can u help me?> thanks alot ...

ungefär 13 år ago | 1 answer | 0

1

answer

Answered
reshape matrix
thank u so much my friend and i have another question how do i filter all the zeros so i can get only A= 111 111 ...

ungefär 13 år ago | 0

Answered
reshape matrix
this is the first matrix 00001110000 00001110000 00001110000

ungefär 13 år ago | 0

Question


reshape matrix
i have this matrix 00001110000 00001110000 00001110000 and i want to make it like that 11100000000 1110000000...

ungefär 13 år ago | 3 answers | 0

3

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Answered
whats this line do?
ok so what this is do? where is the fft take a place? lets say x=[10 X 1000] y=[zeros(10,20000),x,zeros(10,20000)]; ...

ungefär 13 år ago | 0

Question


whats this line do?
y=[zeros(10,20000),x,zeros(10,20000)]; y2=abs(fftshift(fft(real(y(2,:)))))/length(y); thanks!!!

ungefär 13 år ago | 2 answers | 0

2

answers

Answered
problem with 'sum' command
u right my friend bu im asking that, maybe there is a way to sample the sum(x) and mak an fft to open it?

ungefär 13 år ago | 0

Question


problem with 'sum' command
hello if i have this code: x=[10,1000] a=sum(x) i get after the sum that a=[1,1000] so i need to find the inverse co...

ungefär 13 år ago | 2 answers | 0

2

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Question


trying to make fft for this ifft code
hello this code simulated for ifft im trying to do the inverse for find the fft but i failed can u help me? thanks!! ...

ungefär 13 år ago | 1 answer | 0

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Answered
change ifft code to 'ifft' command
yes exacly its possable? or maybe there is an option to make fft loop that converte bake the ifft loop?

ungefär 13 år ago | 0

Question


change ifft code to 'ifft' command
does someone's know how do i change this code to ifft command? (the ifft part at the code) thanks!! N=10; fs=1e6; T...

ungefär 13 år ago | 3 answers | 0

3

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Answered
problem with fft
maybe someone's know? or how to replace all this code in ifft command?

ungefär 13 år ago | 0

Answered
problem with fft
cause i need the length of the fft will be 1000 do u know how i make it? with fft?

ungefär 13 år ago | 0

Question


problem with fft
hello i have this program that make ifft for some random vary maybe someone can help me with the fft? thanks N=10; fs=1...

ungefär 13 år ago | 3 answers | 0

3

answers

Question


problem with a line
hello maybe somebody can explain me this line? [Pxx,W] = pwelch(st,[],[],4096,20); and what is the inverse command fo...

ungefär 13 år ago | 1 answer | 0

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Answered
problem with for loop
thank u very much for your help!!!!!!!!

ungefär 13 år ago | 0

Question


demodulation problem
hello i've tried to make demodulation for this program but i have a problem i think the command 'pwelce' make the 2058 bits in...

ungefär 13 år ago | 0 answers | 0

0

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Answered
problem with for loop
[EDIT: Wed May 18 18:21:13 UTC 2011 - Merged Answers - MKF] ok i tried it but it still doesnt work this is the code maybe som...

ungefär 13 år ago | 0

Question


problem with for loop
hello i try to make a for loop but i need the jumps between the numbers will be in factor of 10 lets say there is a for loop l...

ungefär 13 år ago | 5 answers | 0

5

answers

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