# bandwidth and multiuser communication

I assume $$3$$ users. In the CDMA, the signals after the spreading for the $$3$$ users have the same bandwidth $$B$$.

Is it possible to have $$3$$ spreading signals of the same band $$B'$$ such that $$3B'=B$$? More precisely, the spectrum for the $$3$$ spreading signals don't overlap but they are in the bandwidth $$B$$.

• It may be possible, since the chip rate controls the amount of spreading. But, what is the purpose of doing that? You would no longer have CDMA, but a weird variant of FDMA. – MBaz Apr 26 at 15:18