CDMA2000 is a 3G mobile telecommunications standard, one of the approved radio interfaces for the ITU's IMT-2000 standard, and a successor to 2G CDMA (IS-95, branded cdmaOne). The underlying signaling standard is known as IS-2000. CDMA2000 is an incompatible competitor of the other major 3G standard W-CDMA. A stylised representation of a mobile phone A mobile phone is a device which behaves as a normal telephone whilst being able to move over a wide area ( cordless phone which acts as a telephone only within a limited range). ... -1... ARP (Autoradiopuhelin, Car Radio Phone in English) was the first commercially operated public mobile phone network in Finland. ... 1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. ... For other meanings of the abbreviation, see: NMT. NMT (Nordisk Mobil Telefon or Nordisk Mobil Telefonkruppen, Nordic Mobile Telephony in English) is a mobile phone system that was created in 1981 as a response to the increasing congestion and heavy requirements of the ARP mobile phone network. ... Advanced Mobile Phone System or AMPS is the analog mobile phone system standard, introduced in the Americas during the early 1980s. ... 2G (or 2-G) is short for second-generation wireless telephone technology. ... GSM (Global System for Mobile Communications) is the most popular standard for mobile phones in the world. ... The title given to this article is incorrect due to technical limitations. ... IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... Personal Digital Cellular (PDC) is a 2G mobile phone standard developed and used exclusively in Japan. ... 2. ... General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ... A 2G mobile phone is a circuit switched digital mobile phone. ... Enhanced Data Rates for GSM Evolution (EDGE) is a digital mobile phone technology which acts as a bolt-on enhancement to 2G and 2. ... 3G (or 3-G) is short for third-generation mobile telephone technology. ... W-CDMA (Wideband Code Division Multiple Access), a wideband spread-spectrum 3G mobile telecommuncation air interface that utilizes code division multiple access (or CDMA the general multiplexing scheme, not to be confused with CDMA the standard), is a 3G mobile communications standard allied with the GSM standard. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... FOMA, officially short for Freedom of Mobile Multimedia Access, is the brand name for the 3G services being offered by Japanese mobile phone operator NTT DoCoMo. ... TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G mobile telecommunications standard, being pursued in the Peoples Republic of China by the Chinese Academy of Telecommunications Technology (CATT), Datung and Siemens, in an attempt to develop home-grown technology and not be dependent on Western technology... High-Speed Downlink Packet Access or HSDPA is a mobile telephony protocol. ... This article describes the wireless access technology 4G. For the 4G IATA code see Shenzhen Airlines 4G (or 4-G) is short for fourth-generation the successor of 3G and is a wireless access technology. ... 3G (or 3-G) is short for third-generation mobile telephone technology. ... The International Telecommunication Union (ITU) is an international organization established to standardize and regulate international radio and telecommunications. ... IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation (3G) wireless communications as defined by the International Telecommunication Union. ... 2G (or 2-G) is short for second-generation wireless telephone technology. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... IS-2000 is the second generation of CDMA digital cellular, an extension of IS-95. ... W-CDMA (Wideband Code Division Multiple Access), a wideband spread-spectrum 3G mobile telecommuncation air interface that utilizes code division multiple access (or CDMA the general multiplexing scheme, not to be confused with CDMA the standard), is a 3G mobile communications standard allied with the GSM standard. ...

CDMA2000 is a registered trademark of the Telecommunications Industry Association (TIA-USA) in the United States, not a generic term like CDMA. TIA has branded their 2G CDMA standard (aka IS-95) as cdmaOne. General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ...

There are many different types of CDMA2000. In order of increasing complexity:

CDMA2000 1x

CDMA2000 1x, also known as 3G1X or sometimes 1xRTT, is the core 3G CDMA2000 technology. The designation 1x is used to identify the version of CDMA2000 radio technology that operates in one pair of 1.25 MHz radio channels.

Japanese operator KDDI uses the brand "CDMA 1X WIN" for their CDMA2000 1xEV-DO network, but this is only in reference to its building on past marketing promotions. KDDI Corporation is a Japanese telecommunication operator formed in October 2000 through the merger of DDI, KDD, and IDO Corp. ... CDMA2000 is a 3G mobile telecommunications standard, one of the approved radio interfaces for the ITUs IMT-2000 standard, and a successor to 2G CDMA (IS-95, branded cdmaOne). ...

CDMA2000 1xRTT

CDMA2000 1xRTT (Radio Transmission Technology) is the basic layer of CDMA2000, which supports up to 144 kbit/s packet data speeds. While 1xRTT officially qualifies as 3G technology, 1xRTT is considered by most to be a 2.5G (or sometimes 2.75G) technology as it is several times slower than other 3G technologies. It also doubles voice capacity over previous CDMA networks. 2. ... A 2G mobile phone is a circuit switched digital mobile phone. ...

CDMA2000 1xEV

CDMA2000 1xEV (Evolution) is CDMA2000 1x with High Data Rate (HDR) capability added. 1xEV is commonly separated into two phases:

Phase 1 of CDMA2000 1xEV, CDMA2000 1xEV-DO (Evolution-Data Optimized) supports downlink (Forward Link) data rates up to 3.1 Mbit/s and Up Link (Reverse Link) rates up to 1.8 Mbit/s in a radio channel dedicated to carrying high speed packet data. (Redirected from 1xEV-DO) Evolution Data Only,Evolution Data Optimized, often abbreviated as EVDO, EV-DO, EvDO, 1xEV-DO or 1xEvDO is a wireless radio broadband data protocol being adopted by many CDMA mobile phone providers in Japan, Korea, the United States and Canada, as part of the CDMA2000 standard. ...

Phase 2 of CDMA2000 1xEV, CDMA2000 1xEV-DV (Evolution-Data and Voice), supports downlink (Forward Link) data rates up to 3.1 Mbit/s and Up Link (Reverse Link) rates of up to 1.8 Mbit/s. 1xEV-DV can also support concurrent operation of legacy 1x voice users, 1xRTT data users, and high speed 1xEV-DV data users within the same radio channel.

1xEV-DO is commercially deployed around the world. The European market is slightly ahead of the American market - there is a CDMA2000 1xEV-DO network run by the Czech mobile operator Eurotel since Summer 2004. It offers speeds up to around 1 Mbit/s. The service is sold for about 30 Euro/month with unlimited data. You have to purchase a Gtran GPC-6420 modem for about 300 Euro to start using the service. (Redirected from 1xEV-DO) Evolution Data Only,Evolution Data Optimized, often abbreviated as EVDO, EV-DO, EvDO, 1xEV-DO or 1xEvDO is a wireless radio broadband data protocol being adopted by many CDMA mobile phone providers in Japan, Korea, the United States and Canada, as part of the CDMA2000 standard. ...

Verizon Wireless in North America has begun nationwide deployment of 1xEV-DO. Sprint PCS, also in North America, has announced its intention to deploy 1xEV-DO nationally. Verizon Wireless was the largest wireless phone company in the United States, before Cingulars acquisition of AT&T Wireless. ... This article is about the telecommunications company; see sprints for the running term. ...

As of July 2004, there are no commercial deployments of 1xEV-DV. American carrier Sprint PCS had announced plans to deploy a 1xEV-DV network on top of their existing CDMA network. However, due to delays in the availability of 1xEV-DV equipment and competitive pressures from other American networks deploying 3G networks, Sprint announced, in June 2004, its intention to broadly deploy 1xEV-DO. This article is about the telecommunications company; see sprints for the running term. ...

Qualcomm has recently put the development of EV-DV on an indefinite halt, due to lack of carrier interest, mostly because both Sprint and Verizon are using EV-DO.

CDMA2000 3x

CDMA2000 3x utilizes a pair of 3.75 MHz radio channels (i.e., 3 X 1.25 MHz) to achieve higher data rates. The 3X version of CDMA2000 is sometimes referred to as Multi-Carrier or MC. The 3x version of CDMA2000 has not been deployed and is not under development at present.

External links

• Radio-Electronics.Com (http://www.radio-electronics.com/info/cellulartelecomms/evdo/ev-do.php)Article on CDMA20001xEV-DO