What is the minimum code size for CDMA codes for synchronuous CDMA (not asynchronous CDMA!) with N number of participants?
Furthermore, suppose N parties want to uniquely transmit a message of length K0 each, where K0 is small (e.g. 16 bit) and N is very large (e.g. 1000). What is the minimum size of the total message (i.e., the message including all N different messages of size K0).
Is the minimum size of the transmission K0*N = 16000 bit or can it be made lower?