CDMA modem for 2 users

user1 and user2 are transmitting data through a noisy channel at the same time and using the same carrier frequency. Both users are assigned different PN sequences which are again used at the receiver to demodulate and decode the transmitted data. Channel used is awgn with snr 10db. 3 figure windows will pop out that will be showing each step in the mod/demod process...Hope you like it!