Radio System

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Radio System

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As stated in Chapter 1, Section 1.2, requirements for International Mobile Telecommunications-2000 (IMT-2000) include system flexibility, economy and conditions on data transmission speed defined in numerical terms. The minimum performance requirement in terms of transmission speed is 2 Mbit/s in an indoor environment, 384 kbit/s in a pedestrian mode and 144 kbit/s in a vehicle mode. For the radio system, Wideband Code Division Multiple Access (W-CDMA), which outperforms the stated requirements, was proposed as the air interface, which led to efforts in standardization and system development....

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