Since channel multiplexing techniques in communication system is playing a major rule in bandwidth efficiency and channel capacity, therefor this book is handle with one of the most common and efficient channel multiplexing technique which is CDMA ( Code Di vision Multiple Access ), Chapter one is a history and introduction to DSCDMA (Direct Sequence CDMA), Chapter two CDMA & Direct Sequence Spread Spectrum involve CDMA types and applications, Chapter three deals with power control techniques in CDMA in order to increase users capacity and limit the interference for wireless communication...