Abstract: As one of the international standards of 3G raised by China, TD-SCDMA is applied more widely recently. But under the case of coexistence of several wireless systems, interference among them increasingly affects the system performance,which promotes studies on related areas. Since frequency bands are allocated subtly,spurious emission interference greatly influences the duality of communication. This paper was based on the theory of spurious emission,while interference on TD-SCDMA was quantitatively analyzed referring to standard of each system. I}he simulation educed detailed data of interference from different systems using MontcCarlo method. Furthermore, state of interference was described by some parameters such as electronic level and spurious emission isolation, which can be referred in the construction of platform for a number of coexisting systems.

Key words: Spurious emission interference,Coexistence,Isolation,Electronic level, TD-SCDMA