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W-CDMA
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W-CDMA
W-CDMA  (Wideband Code Division Multiple Access) is an air interface found in 3G mobile telecommunications networks. It is the most-commonly used member of the UMTS family and sometimes used as a synonym for UMTS. It achieves higher speeds and supports more users compared to most TDMA schemes used today.

While not an evolutionary upgrade on the airside, it uses the same core network as the 2G GSM networks deployed worldwide, allowing dual-mode operation along with GSM/EDGE.