Что (кто) такое WCDMA - определение

THIRD GENERATION MOBILE CELLULAR SYSTEM FOR NETWORKS

UMTS (telecommunication); W-CDMA; TD-SCDMA; WCDMA; Universal Mobile Telephone System; Umts; UMTS-TDD; TD-CDMA; UTRA TDD-HCR; Wideband Code Division Multiple Access; Wideband CDMA; TDSCDMA; Time Division-Synchronous Code Division Multiple Access; Time Division Synchronous Code Division Multiple Access; UTRA-TDD HCR; UTRA-TDD LCR; UTRA TDD-LCR; UTRA; UMTS-FDD; UARFCN; TD SCDMA; Wideband code division multiple access; Universal mobile telecommunications system; List of TD-SCDMA networks; Universal Mobile Telecommunications System; UTRA-TDD; Uu interface

WCDMA

??? Code Division Multiple Access (Reference: mobile-systems)

WCDMA

Wideband Code Division Multiple Access

UMTS

Universal Mobile Telecommunications System

Википедия

UMTS

The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.

UMTS specifies a complete network system, which includes the radio access network (UMTS Terrestrial Radio Access Network, or UTRAN), the core network (Mobile Application Part, or MAP) and the authentication of users via SIM (subscriber identity module) cards.

The technology described in UMTS is sometimes also referred to as Freedom of Mobile Multimedia Access (FOMA) or 3GSM.

Unlike EDGE (IMT Single-Carrier, based on GSM) and CDMA2000 (IMT Multi-Carrier), UMTS requires new base stations and new frequency allocations.

https://en.wikipedia.org/wiki/UMTS

Примеры употребления для WCDMA

1. "We are talking to operators in India, even Reliance for deployment of WCDMA technology," head of 3G WCDMA networks at Nokia, Emilio Brambilla said.

2. As of June 30, 2005, there were 78 commercial WCDMA networks across 36 countries, amounting to a customer base of over 28.34 million WCDMA subscribers, a number that will go up exponentially over the course of the next few years.

3. WCDMA is one of the main technologies for the implementation of third generation mobile systems.

4. We are talking to operators in India, including Reliance, for migrating them to WCDMA," Brambilla said.

5. The company has also invested heavily in the WCDMA technology found in many 3G handsets.