Before we go in detail about 4G- LTE, you must opt for WCDMA training. It gives a detailed course for 3G-WCDMA (which stands for Wideband Code Division Multiple Access).
WCDMA is a standard for 3G network. WCDMA is a channel access method used by various radio communication technologies.
It should not be confused with the mobile phone standards like CDMA One, CDMA 2000 (3G Evolution of CDMA One) and CDMA, which are used as an underlying channel access method.
It was not a revolutionary upgrade in the existing network, but by having the standard based on 2G GSM/EDGE, it was possible to simultaneously switch between GSM and EDGE. Also it was capable for compatibility with other UMTS family.