Editing Evolution-Data Optimized (section)

{{Short description|Telecommunications standard for the wireless transmission of data through radio signals}}
{{Technical|date=September 2010}}

[[File:Kyocera EVDO router.jpg|thumb|A Kyocera [[PC Card]] EV-DO [[router (computing)|router]] with [[Wi-Fi]]]][[File:1XEV Mobile Phone Screenshot blackberry.png|thumb|[[BlackBerry]] Style (9670 series) smartphone displaying '1XEV' as the service status as highlighted in the upper right corner.]]
[[File:Sanyo katana connecting to the internet - mar 2022.jpg|thumb|[[Sanyo]] Katana cell phone connected to the internet via EV-DO]]
'''Evolution-Data Optimized''' ('''EV-DO''', '''EVDO''', etc.) is a [[telecommunication]]s standard for the [[wireless]] transmission of data through [[radio]] signals, typically for [[broadband Internet access]]. EV-DO is an evolution of the [[CDMA2000]] ([[IS-2000]]) standard which supports high data rates and can be deployed alongside a wireless carrier's voice services. It uses advanced <!-- (advanced in 2013) --> [[multiplexing]] techniques including [[code-division multiple access]] (CDMA) as well as [[time-division multiplexing]] (TDM) to maximize throughput. <!-- (Excessive detail for Lead removed, + too technical, see [[Wikipedia:Manual of Style (lead section)]]) --> It is a part of the [[CDMA2000]] family of standards and has been adopted by many [[mobile phone]] service providers around the world  particularly those previously employing [[CDMA]] networks. It is also used on the [[Globalstar]] [[satellite phone]] network.<ref>{{cite web|url=http://www.engadgetmobile.com/2006/11/09/globalstar-gsp-1700-satphone-also-loaded-with-ev-do/|title=Globalstar GSP-1700 satphone also loaded with EV-DO|author=Cyrus Farivar|work=Engadget|access-date=14 August 2015|archive-date=12 September 2018|archive-url=https://web.archive.org/web/20180912204303/http://www.engadgetmobile.com/2006/11/09/globalstar-gsp-1700-satphone-also-loaded-with-ev-do/|url-status=dead}}</ref>

An EV-DO channel has a bandwidth of 1.25&nbsp;MHz, the same bandwidth size that IS-95A ([[IS-95]]) and IS-2000 ([[CDMA2000|1xRTT]]) use,<ref name="CDG">{{cite web|url=http://www.cdg.org/technology/3g_1xEV-DO.asp |title=3G - CDMA2000 1xEV-DO Technologies |access-date=2008-01-18 |publisher=CDMA development Group |archive-url=https://web.archive.org/web/20071220233907/http://www.cdg.org/technology/3g_1xEV-DO.asp |archive-date=2007-12-20 |url-status=dead }}</ref> though the channel structure is very different. The back-end network is entirely [[packet switching|packet-based]], and is not constrained by restrictions typically present on a [[circuit switched]] network.

The EV-DO feature of CDMA2000 networks provides access to mobile devices with [[forward link]] air interface speeds of up to 2.4&nbsp;Mbit/s with Rel. 0 and up to 3.1&nbsp;Mbit/s with Rev. A. The [[reverse link]] rate for Rel. 0 can operate up to 153&nbsp;kbit/s, while Rev. A can operate at up to 1.8&nbsp;Mbit/s. It was designed to be operated end-to-end as an [[IP-based network]], and can support any application which can operate on such a network and bit rate constraints.