Despite incompatibility with existing air-interface standards, late introduction and the high upgrade cost of deploying an all-new transmitter technology, W-CDMA has become the dominant standard. Source: Internet
Elsewhere, W-CDMA deployments are usually marketed under the UMTS brand. Source: Internet
From an engineering point of view, W-CDMA provides a different balance of trade-offs between cost, capacity, performance, and density; it also promises to achieve a benefit of reduced cost for video phone handsets. Source: Internet
Even the maximum power output of class 1 is a lower level than the lowest powered mobile phones. citation UMTS & W-CDMA outputs 250 mW, GSM1800/1900 outputs 1000 mW, and GSM850/900 outputs 2000 mW. Source: Internet
Further, it is supposed to cover all usage scenarios, whereas W-CDMA is optimised for symmetric traffic and macro cells, while TD-CDMA is best used in low mobility scenarios within micro or pico cells. Source: Internet
However, divergent requirements resulted in the W-CDMA standard being retained and deployed globally. Source: Internet