Let's consider the Shannon - Hartley formula for the channel capacity \$C\$:
$$C = B \log_2 (1 + S/N)$$
I have two doubts about it:
1) is it correct for TDMA, FDMA, or CDMA? And why?
2) Can a variation of the dimensions of the radio cells (base transceiver stations) reduce/increase the value of \$S/N\$?