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GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.
AT&T, T-Mobile, Verizon, Boost Mobile, and UScellular also sell SIM cards through their retail channels, both in-store and online. The top five wireless providers operate nationwide wireless networks which cover most of the population in the United States, while smaller carriers provide native network coverage across selected regions of the ...
Yes, Access to Verizon nationwide 5g and UWB (mm wave) 5g capped at 200 Mbit/s, however the speed cap is not strictly enforced. Yes, Unlimited hotspot; Speeds capped at 5 Mbit/s (not typically enforced- usually same speed as the phone); Only one device may connect to the mobile hotspot at a time, however this is not enforced on iPhones, Pixels ...
Dana—Palm OS 4.1.2 - small "laptop" running Palm OS with a 560x160 pixel greyscale LCD, full-sized keyboard, two SD card slots, 8MiB or 16Mib memory, powered by NiMH or 3 x AA battery or wall adapter
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