I have a clear idea of how a PN-sequence is used in a Direct Sequence Code-Division Multiple Access(DS-CDMA) system with BPSK. In such a system, a different pn-sequence is assigned to each user and each transmitted bit is XORed with the binary pn-sequence.
Now my question is:
For each symbol time, how are this binary pn-sequences used in a FH/CDMA system to chose which hop frequency to use if there are more than two possible hop frequencies?
If I have 2 possible hop frequencies to use, the answer is trivial, because each bit of the pseudo-random sequence would tell which of the two hop frequencies must be used. But when having more than two frequencies... How is this selection done?