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cdma2000 1X EV-DO brings important new capabilities to CDMA-based networks, and is becoming a reliable revenue generator for operators. EVDO is one of the least costly upgrades on the path to 3G technology, yet it provides unmatched data rates though its dedicated data channel.
The EV-DO feature of CDMA2000 networks provides access to mobile devices with forward link air interface speeds of up to 2.4 Mbit/s with Rel. 0 and up to 3.1 Mbit/s with Rev. A. The reverse link rate for Rel. 0 can operate up to 153 kbit/s, while Rev. A can operate at up to 1.8 Mbit/s.
EVDO Overview. Cdma2000 1xRTT brought packet switching to CDMA networks. EVDO dramatically enhances the packet-switched capabilities, while coexisting with many of the 1xRTT features. Packet-switched systems conserve resources, using net-work capacity (bandwidth) only when there is data to be transferred.
1xEV-DO, also called EV-DO, EVDO, or just EV, was initially developed by Qualcomm in 1999 to meet the IMT-2000 requirements for a greater-than-2-Mbit/s downlink for stationary communications. For a while, the standard was called HDR (High Data Rate) but was renamed as 1xEV-DO after it was ratified by the ITU and given the numerical designation ...
CDMA 2000 1x EVDO (ang. Evolution Data Only/Evolution Data Optimized) - wersja technologii CDMA przeznaczona wyłącznie do transmisji danych. Od 1 marca 2007 technologia zapewnia szerokopasmowy dostęp do internetu w SFERII.
EV-DO was designed to co-exist with CDMA2000 1X. Because the coverage area and frequency plans are the same, EV-DO was deployed in the same cell sites as 1X, using the same antenna. Also, the EV-DO channel cards fit in the 1X channel card enclosures. Other competing technologies were limited in performance and were more costly to deploy.
CDMA2000 1x EVDO Rev A is a 3rd Generation (3G) wireless solution for high-speed mobile Internet access (also known as IS 856-A). This paper provides insight into key enhancements of 3G...
