Correlation is from a mathematical point of view a shift in time domain +multiplication + summation operation
I thought that if 2 codes are "time aligned" then correlation reduces to a dot product multiplication and summation, so no shift.
So suppose I have a sequence -1 1 1 -1, then if it is time aligned with itself , the result of correlation or dot product +summation is 4 and nothing else. I have to say that I acquired this understanding from looking at a CDMA receiver where I always see a multiplication when signal are being despread
I guess my interpretation or understanding of the term "Time Aligned" when it comes to correlation is not correct, right?