4.Cellular Systems:Multiple Access and Interference Management Wireless oundations Four Systems ·Narrowband(GSM) Wideband system:CDMA(IS-95) Wideband system:OFDM(Flash OFDM) Opportunistic Communication (1x EV-DO)(later) Fundamentals of Wireless Communication,Tse&Viswanath 44. Cellular Systems: Multiple Access and Interference Management Fundamentals of Wireless Communication, Tse&Viswanath 4 Four Systems • Narrowband (GSM) • Wideband system: CDMA (IS-95) • Wideband system: OFDM (Flash OFDM) • Opportunistic Communication (1x EV-DO) (later)