Over the last three decades, the wireless communication technology is dominating over another technology. In this thesis, basic study of CDMA technique,is elaborated for the purpose of understanding & learning the initial concepts for the undergraduate engineering students and also those who are enthusiastic about CDMA technique. The Code Division Multiple Access (CDMA) is a digital cellular technology pioneered by QUALCOMM in USA in which signals are encoded using a pseudo-random sequence (PN sequence) - which corresponds to a different communication channels that the receiver ...