WCDMA is rapidly sweeping the world and has occupied 80% of the wireless market. By the end of 20 13, the number of WCDMA users in the world has exceeded 3.6 billion, and 156 operators in 70 countries have commercialized 3GWCDMA services. The domestic operator is Unicom.
WCDMA: Wideband Code Division Multiple Access (English)
It is a 3G cellular network, and some protocols used conform to the 2GGSM standard. Specifically, W-CDMA is a broadband spread spectrum 3G mobile communication air interface using code division multiple access multiplexing (or CDMA universal multiplexing technology, not CDMA standard).
As a new technology, WCDMA is also derived from the practice and application of CDMA technology.
Extended data:
The name of W-CDMA is very similar to CDMA, and the relationship between W-CDMA and CDMA is also very subtle. They are all based on CDMA technology, and they all use some patented technologies in Qualcomm.
It is generally believed that W-CDMA was developed by some manufacturers to avoid the patent trap, and its scheme has avoided the Qualcomm patent as much as possible.
In the field of mobile phones, the term CDMA refers to several related technologies belonging to the second generation of mobile phones, including code division multiple access spread spectrum multiplexing technology, and the CDMA standard family formulated by Qualcomm in the United States, including cdmaOne(IS-95) and CDMA2000(IS-2000).
References:
Baidu encyclopedia-broadband CDMA