1 Introduction 1.1 Development of CDMA Wireless Communications Wireless communication has made a huge leap since its first commercial service in the late 1970s and early 1980s. In the UK, the 1G service was provided by Total Access Communications Systems (TACS) in 1985. TACS standard is based upon an earlier Bell Labs system which was developed in the late 1970s and has been deployed in North America under the name Advanced Mobile Phone System (AMPS). The first move toward digital wireless communications in Europe began in the early 1980s when the Conference of European Post and Telecommunications (CEPT) initiated the work