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User fairness and spectrum efficiency are conflicting objectives in cellular system optimization given that users share limited spectrum resources. Users at the cell edge are more likely to be unfairly treated due to their disadvantageous locations, where they experience high path losses and strong interferences if co-channel transmission exists. In this paper, a cell edge boundary is obtained and...
In advanced IC processes, the physical properties of wires (width, thickness, and resistance) vary depending on the surrounding wiring. We modified the EMX electromagnetic simulator to allow width- and spacing-dependent properties to be given in the process description. EMX automatically modifies the drawn layout to mimic the fabrication process. We validate our approach by comparing to measurements...
Digital factory is a new technology to construct a virtual plant framework to integrate manufacturing process planning with manufacturing execution. Object-Oriented technology is introduced to simulate complicated discrete production system. And a virtual factory is constructed in digital environment. In this paper, manufacturing resource library is built to manage manufacturing equipments and all...
Digital factory is a new technology to construct a virtual plant environment to implement integration between process planning and manufacturing execution. Object-oriented technology is introduced to simulate complicated discrete-events system with constructing four basic objects including product, process, planning and resource in digital factory environment. Especially manufacturing resource library...
Advanced manufacturing and network technologies have impacted on every aspect of product development significantly. Meanwhile, the increasing product complexity and globalization manufacturing bring manufacturing enterprise to adapt advance manufacturing mode and some digital technology for satisfying new requirement. In order to satisfy the production development requirements, a lot of precious manufacturing...
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