CDMA Encode/Decode channel output Zi.m Zi.m=diCm: data d0=1 1的可 bits d1=-1 sender 时可 5HH code 可可 11日 slot 1 slot 0 channel channel output output slot 1 slot0 D= M received H44 d0=1 input d1=-1 code 11万 1日 slot 1 slot 0 的5 包5 channel channel receiver output output slot 1 slot 0 6:Wireless and Mobile Networks 6-13 6: Wireless and Mobile Networks 6-13 CDMA Encode/Decode slot 1 slot 0 d1 = -1 1 1 1 1 -1 -1 -1 -1 Zi,m= di . cm d0 = 1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 slot 0 channel output slot 1 channel output channel output Zi,m sender code data bits slot 1 slot 0 d1 = -1 d0 = 1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 slot 0 channel output slot 1 channel receiver output code received input Di = S Zi,m . cm m=1 M M