文中在网络容量和覆盖的理论基础上,对TD-SCDMA,WCDMA和GSM的网络规划及影响因素进行了数学分析和仿真,研究了增大功率和扇区化方式对他们的影响。揭示了WCDMA的软容量的引入使它能服务更多用户,并得出WCDMA上行链路频谱效率为GSM的1.56倍,下行链路为GSM的1.88倍;在比较TD-SCDMA和WCDMA的链路预算差异后,得出TD-SCDMA覆盖小区半径更占有一定优势。 Based on the theory of network capacity and coverage, the paper analyzes and simulates the network planning and influencing factors of TD-SCDMA, WCDMA and GSM, and studies the influence of increasing power and sectorization on them. It is revealed that the introduction of soft capacity of WCDMA makes it capable of serving more users and concludes that the WCDMA uplink spectrum efficiency is 1.56 times that of GSM and 1.88 times that of GSM downlink. In comparing the links between TD-SCDMA and WCDMA Budget differences, draw the TD-SCDMA coverage radius of the more possession of certain advantages.