Wideband Code Division and Multiplication Access

When we talk about first generation systems we think about analog cellular systems. The second-generation systems are GSM (Global System for Mobile Communication), PDC (Personal Digital Cellular, 2 nd generation system in Japan), cdmaOne (IS-95) and US-TDMA (IS-136). Third generation systems, which are designed for multimedia communication are to have high quality images and videos and to access higher data rate information and services on public and private networks. WCDMA technology has emerged as the most widely adopted third generation air interface.