The Research about the Defects of TD-SCDMA Standards
Hui Shen · Journal of Nanjing Institute of Posts and Telecommunications · 2006
It is presented in the paper that it is difficult to realize the sectored cell and the same antenna for multiple frequency channels by analyzing the theory of the smart antenna.Therefore it can be proved that the smart antenna technology is not a commercial technology at present.Asymmetry slot distribution between inter-cells/sectors would bring the transmission and receiving interference between the inter-cells/sectors,so it can't be put into practical application.The technological defects of the TD-SCDMA standard are analyzed in the paper from many aspects,such as the characteristics of 2 GHz frequency band,MS's transmission power,a cell capacity on uplink/downlink and so on.TD-SCDMA system is difficult to support different radio access data rates,such as vehicular environment: 144 kbit/s,pedestrian environment: 384 kbit/s,indoor office environment: 2.048 Mbit/s,which are required by 3G standards.