decision device in BASK receiver

Question

Salma 2011-4-20

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/5869-decision-device-in-bask-receiver

I'm designing decision device in BASK receiver and i have total no. of symbols ns=3000 and divided into total number of bits (tnb)=30 and each bit contains (nsb=100) samples.. i want to make nested for loops that add each 100 sample in each bit and divide it by the total no. of samples (nsb) to get average, if the sum greater than 0.5 then the output is 1 else 0 !!! i made the following code but it's wrong

for w=1:nsb:ns
  summ=0;
    for g=1:nsb
        summ= (summ+fds(g))/nsb
    if summ <= 0.5
        bitout=0;
    else
        bitout=1;
    end
    end
end

where fds is the output from the transmitter after the envelope detector

please could anyone help me with this code?? thanks,

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Answer 1

Walter Roberson 2011-4-20

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/5869-decision-device-in-bask-receiver#answer_8204

I suspect that at the very least you want to move your "if" to after the "end" of the "for g". However, I have to been able to tell from your description what you are trying to do. For example, why calculate all those bitout values only to throw them away the next time you go through the loop?