Convolutional coding - how does the signal change?

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dear all,

just a quick question...

What exactly happens to the signal after going through the convolutional coding block?

Many thanks in advance
 

thank you..

could you kindly explain to me where does the 2nd signal come from? for instance in an ofdm system?
 

if you have two signals (in time domain) and you convolute them then the result in f-domain will be the product of the fourier transforms of these two signals individually.(i.e frequency components of the two signals will multiply with each other)
 

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