Hi,
TDMA (Time Division Multiple Access) and FDMA (Frequency Division Multiple Access) both work because each 'user' of the communication medium is transmitting at either a different frequency or at a different time.
I don't understand how a receiver can physically distinguish between users in a CDMA scheme when each is allowed to transmit with the same carrier frequency and at the same time. Even if the codes are different, how can the receiver distinguish one users code from the other if they are at the same carrier frequency at the same time?
Wouldn't it just 'hear' a nonsense merging of the two codes as one code?
I think I've missed something important here.
Thanks
TDMA (Time Division Multiple Access) and FDMA (Frequency Division Multiple Access) both work because each 'user' of the communication medium is transmitting at either a different frequency or at a different time.
I don't understand how a receiver can physically distinguish between users in a CDMA scheme when each is allowed to transmit with the same carrier frequency and at the same time. Even if the codes are different, how can the receiver distinguish one users code from the other if they are at the same carrier frequency at the same time?
Wouldn't it just 'hear' a nonsense merging of the two codes as one code?
I think I've missed something important here.
Thanks