Jianlian Li

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Illustrating how the CDMA 1x mobile network evolutes to EV-DO network. It carries out the EV-DO network planning and analysis based on the existing CDMA 1x mobile network, which includes selecting its propagation model, planning process and main parameters of the design, etc. It gives the reference values in the planning, and simulates by CNP simulation(More)
Established a model of intelligent elevator group control based on the timed-colored Petri nets (TCPN); Used simulation tools CPN Tools to simulate intelligent control of elevator group; defined various data collectors (monitor) to monitor the elevator running states; analyzed the efficiency of the elevators with the data collected by the monitors. The(More)
This paper makes a research on the application of GIS system to intelligent terminal PDA and its capability and storage mechanism. It studies how to organize and manage the massive regular grid data of GIS real-timely and visually while the storage capability and speed is so limited. On organization of grid data, it puts forward a data management model that(More)
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