I am new to digital communications and trying to understand the basic underlying concepts of digital comm systems. So far , studying the course , I have some questions which if anyone can answer would be great.
In the transmit section, to represent the data (be whatever modulation we are using or No modulation), we have to represent bits/symbols (bits-no modulation, symbols-with modulation) in terms of pulse shaping function. Am I right?
And mostly we use root raised cosine signal to represent the symbols in order to restrict the leakage and have square(approx) shaped spectrum