WCDMA is a wideband spread-spectrum 3G mobile telecommunication air interface that utilizes code division multiple access (or CDMA the general multiplexing scheme, not to be confused with CDMA the standard). It provides simultaneous support for a wide range of services with different characteristics on a common 5MHz carrier.

The term WCDMA also refers to one of the International Telecommunications Union's IMT-2000 standards, a type of 3G cellular network. WCDMA is the technology behind the 3G UMTS standard and is closely allied with the 2G GSM standard. It provides new service capabilities, increased network capacity and reduced cost for voice and data services.

The term 'WCDMA Evolved' describes the evolution of WCDMA, addressing both operators' needs for efficiency and users' demands for enhanced experience and convenience. The first steps of this evolution are HSDPA and Enhanced Uplink.

Evolving 3G Mobile Systems – Broadband and Broadcast Services in WCDMA
On Base Station Antenna Beamwidth for Sectorized WCDMA Systems
WCDMA 6-sector Deployment - Case Study of a Real Installed UMTS-FDD Network
A Novel Approach to WCDMA Radio Network Dimensioning
Advanced receivers for WCDMA terminal platforms and base stations
Broadband data performance of third-generation mobile systems
GSM and WCDMA – Common network approach
Rural WCDMA – Aiming for nationwide coverage with one network, one technology, and one service offer
The importance of in-building solutions in third-generation networks
Third design release of Ericsson's WCDMA macro radio base stations