I am trying to simulate the SC-FDMA transmission and I read H Myung's paper and research on the topic but I am not sure exactly on what should be the size of FFT at the transmitter.
For a 20 MHz channel, with 1200 available subcarriers, what should be the size of the FFT block?
The research talks about IFFT at transmitter sized N = M·Q where Q is the number of users and M is the no. of subcarriers in each block of Q.
So do we perform a M pt. FFT on each Q block or on the entire 1200 symbols at the transmitter before IFFT?
Link to paper: https://ieeexplore.ieee.org/abstract/document/4099344