... Thedifferent access systems will use already-allocated and identified frequencybands and potential new frequency bands for the new elements. Therefore,no direct interference between different technologies ... R., and R. Prasad, OFDM for Wireless Multimedia Communications, Norwood,MA: Artech House, 2000.[15] Chuang, J., and N. Sollenberger, ‘‘Beyond 3G: Wideband Wireless Data Access Basedon OFDM and ... 1990s, such asGlobal Systems for Mobile Telecommunications (GSM) [1], Personal DigitalCellular (PDC) [2], and Interim Standard (IS)-95 [3], on digital technologies for voice-oriented traffic....