My understanding of sampling frequency is when we have an analog signal x(t) we convert it to a digital signal. Assume the sampling frequency is denoted by $f_s$ then the sampling time $T_s$. In my understading this is denoted the number of samples per second.
In MATLAB programs, I have come across generation of base band signal. The authors have upsampled the base band signal and the sampling rate was stated to be 3 samples per symbol.
My question is what does samples per symbol mean.Assuming we have QAM symbols are we repeating it three times?