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1xRTTOne Times Radio Transmission Technology (CDMA 2000)
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On the cdmaOne evolution path, cdma2000 1xRTT, defined by IS-2000, reached downlink rates of up to 153.6 Kbps by using variable length orthogonal codes and Quadrature Phase-Shift Keying (QPSK) modulation [8].
Sprint plans to maintain our CDMA 1xRTT network capability for the long term as part of our overall Network Vision strategy, said Wayne Ward, vice president, M2M Group, Sprint.
"Airvana is a leader in the femtocell market and the only company with a CDMA femtocell that supports both 1xRTT and 1xEV-DO Rev-0 and Rev-A.
Supporting EV-DO 1xRTT capabilities, as well as high-speed broadband network connectivity, the smart phone offers Web browsing via Internet Explorer Mobile and comes with Windows Mobile v6 Pro.
Certified for the Aeris CDMA2000(R) 1xRTT network, the Kyocera 200 Module is equipped data and voice communications with tri-mode capability (including AMPS), A-GPS position location capability and support for IS-2000 data rates (153KBps on forward and reverse links).
A network enhancements are the USB720 wireless modem, the AirCard 595 and PC5750 PC Card, which are fully compatible with the company's enhanced and existing wireless broadband networks and the company's NationalAccess network (based on CDMA 1xRTT technology).
The report, "Energy Efficiency Analysis for Mobile Broadband Solutions," provides a theoretical and real-world analysis of the relative costs of deploying WCDMA, HSDPA, CDMA2000 1xRTT, EV-DO, WiMAX, and Municipal Wi-Fi.
Take, for example, the following protocols: CDMA 1xRTT, CDMA 1XEVDO, CDPD, GPRS, iDEN.
Virtually all handsets now come equipped with a capability to handle relatively low-speed data sent point-to-point using technology based upon GSM, such as GPRS, or upon CDMA, such as cdma2000 1xRTT. This is not well-suited for visual imagery beyond still photography, but increasingly consumers are turning to handsets with much faster download speeds that meet the definition of so-called 3G, typically the W-CDMA (UMTS) or cdma2000 1xEV-DO variants, and these largely do away with the problem of jerkiness.
CDMA networks have also upped their data speeds: the 1xRTT (radio transmission technology) enhancement takes throughput to 144 Kbps.