3. is the foundation of cellular coverage maps. It does not require a great deal of timing synchronization, but it does requi
4. makes it possible for several mobile users to share multiple frequency bands at the same time by spreading the signal out 3. is the foundation of cellular coverage maps. It does not require a great deal of timing synchronization, but it does require very precise transmission and receiving filters. Frequencies are assigned for the length of the communication High Speed Downlink Packet Access (HSDPA) Time Division Multiple Access (TDMA) Frequency Division Multiple Access (FDMA) Code Division Multiple Access (CDMA) 4. makes it possible for several mobile users to share multiple frequency bands at the same time by spreading the signal out over the frequencies. Because it relies on lower- powered signals, however, it suffers from the “near-far” problem. High Speed Downlink Packet Access (HSDPA) Frequency Division Multiple Access (FDMA) Time Division Multiple Access (TDMA) Code Division Multiple Access (CDMA)



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