W-CDMA stands for Wideband Code Division Multiple Access

Its an  air interface standard found in  3G  mobile telecommunications  networks designed for “always-on” packet-based wireless service, so that computers entertainment devices and telephones may all share the same wireless network and be connected to the internet, anytime anywhere.

  It was adopted as a standard by the ITU under the name "IMT-2000 direct spread."

It is the technology used in the Universal Mobile Telecommunications System (UMTS) and is also known as UMTS-FDD.

It utilizes the  DS-CDMA  channel access method and the FDD duplexing method to achieve higher speeds and support more users compared to most  time division multiple access  (TDMA) schemes used today.