Matlab simple problem!

[Girly_girl]

Hello
I have a problem in matlab where i have first modulated the signal and now want to get back to the original square wave form..

I try to use if statements but its not working and it only gives one constant horizontal line.

I have attached the graphs..
What i want it to do is to >>

If we have 0 in figure 12 (M8 ), then the output (M9 ) should be 1, and if do not have 0, then the output should be 1.. hence producing a square waves..

if M8 == 0
M9 = xor(1,M8 )*;
else
M9 = 0*;
end;

 

[Girly_girl]

Anyone has any clue??

 

[mrflibble]

Shouldn't you be doing this on a by component base?

I can see how you get all zeroes, since as far as I can tell essentially you do

if (something_that_always_evaluates_to_false)
never_happens
else
answer_du_jour=0*;


Could be I am missing something though. (such as full code to make spotting the error easier. ;-) )

Apart from that, since you're using XOR anyway, why not XOR the modulated vector with the modulation vector by component, and see how that goes?

 

[Girly_girl]

Thanks for ur response..

Please find attached

 

[mrflibble]

I commented out the problematic part and replaced it with a by-component loop. From what I understand from your problem this might give you what you were looking for.

Hope that helps.

%if M8 == 0
%     M9 = xor(1,M8)*a;
%    else
%     M9 = 0*a;
%end;

for k=1:1000
    if (M8(k) == 0)
        M9(k) = a(k);
    else
        M9(k)=0;
    end
end


figure(13),plot(tn,M9);

PS: Note that I ditched the xor, since that always evaluates to 1 anyway at that branch of the if statement.

 

[Girly_girl]

Wow excellent job... Thanks
BTW i love ur display pic lol
Thanks again

 

[mrflibble]

No problem.

BTW i love ur display pic lol

Hypnotic, isn't it? @_@

 

[Girly_girl]

Yea Hypnotic and cute

 

[mrflibble]

Oh, go on! I bet you say that to all the hand puppets with pulsating red eyes!

 

[Girly_girl]

Haha Not all but yea most of them