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Articles by Liyun Zhang
Total Records ( 2 ) for Liyun Zhang
  Zhengrong Xiao , Dong Wang , Liyun Zhang and Jun Liao
  With the rapid development of mobile communication, the interference between different mobile communication systems is more and more complex. The interference between LTE-FDD and LTE-TDD system in coarea and cosite scenarios is studied. The interference scenarios between LTE-FDD and LTE-TDD system is given, the models, simulation results, related analysis and finally the solution to resolve the interference is given which can be used as reference to deploy the LTE-FDD and LTE-TDD systems.
  Yi Zeng and Liyun Zhang
  The research of spatial data specification and description mechanism is very important for spatial information sharing and collaboration, especially for spatial information system. Most of the studies focus on the composition of the content and implementation of specific standards, but not aims the procedure in data integration. This study is based on the data service architecture in spatial information system and analysis the relevant data specification and standards. We study the resource description mechanism and metadata strategy and summarize the relations between spatial resources description and corresponding standards. Compared with other methods, this method can expand the spatial data standard combined with operational features of the data in the grid. The study gives the application in spatial information grid platform for case study, discusses the results in detail and establishes the basis for data sharing and service coordination.
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