TD-SCDMA (time division synchronous code division multiple access) is a mobile telephone standard for wireless network operators who want to move from a second generation (2G) wireless network to a third-generation (3G) one.
Supporting data transmission at speeds up to 2 Mbps, TD-SCDMA combines support for both circuit switched data, such as speech or video, and also packet-switched data from the Internet. The standard combines time division multiple access (TDMA) with an adaptive, synchronous-mode code division multiple access (CDMA) component.
TD-SCDMA was developed by the China Academy of Telecommunications Technology (CATT) in collaboration with Datang and Siemens.
•One of the focal points in the telecommunication research is the integration of TD-SCDMA and WiMAX.Whether TD-SCDMA is compatible to other 3G standards is crucial to the success of 3G in China. Based on the analysis of the advantages and disadvantages of TD-SCDMA and WiMAX in wireless transmission, a new framework of wireless telecommunication is proposed. In this framework, when the source Mobile Station (MS) and target MS are located indifferent cells, they can use TD-SCDMA to communicate(defined as WAN mode in the paper), and when the source MS and target MS are located in the same cell, a wireless Mesh network will be built and the MSs can communicate using WiMAX as the air interface (defined as LAN mode). The proposed framework efficiently integrates the advantages of TD-SCDMA and WiMAX. Finally, based on simulation, the performance of the proposed framework demonstrates some advantages in actual wireless telecommunication.
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