According to the coexistence of 2G and 3G operators in China,it discusses the consideration on the combination of WCDMA and existing 2G system.It analyzes the advantages and disadvantages on the combination of 2G and WCDMA,discusses the reconstruction of feeders and antennas of the 2 system.It analyzes the isolation required from the lost inhibition,obstruction and interoperability interference in connecting WCDMA into a distributed system with others.
