This book emphasizes on the design of orthogonal and near-orthogonal spreading codes for Code Division Multiple Access (CDMA) communication. It provides a brief but useful idea behind spread spectrum modulation technique which forms the backbone of mobile communication in a CDMA environment. Generation strategy and inherent characteristics of many of the state-of-the-art spreading codes have been properly discussed. Author has introduced a new type of spreading code, namely Small Set Orthogonal Kasami, which has been the author's novel contribution in the relevant field. Relative advantages...