Coexistence Analysis between WCDMA and TD-LTE Systems in Multimode Terminals

In the future, the mobile station will comprise a wide range access technology (RAT) providing user with a flexible and efficient access to the multimedia service and high data rate communication. Although much work has been done for coexistence analysis between different systems base station (BS), most of them have not addressed the interference within multimode terminal. Hence, to fill this gap, this paper presents coexistence study of Wide Band Code Division Multiple Access (WCDMA) and Time Division Duplex Long term evolution (TDD-LTE) network in multi-mode terminal with multi-service provisioning. First, we introduce the system model for coexistence study and explain how deterministic analysis can be done within the terminal. And the interference evaluation model is based on the relation between reference sensitivity and signal noise ratio (SNR), which also is deduced in the paper. Then we provide the system simulation methodology and assumptions used in simulation, and show the simulation results with different system parameters. And we provide the minimum antenna isolation required for a health system operation.