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In this paper we investigate the deployment of LTE indoor femtocells on the frequency band currently used by GSM cellular network. We consider a scenario where the LTE femtocells share GSM uplink spectrum provided that the legacy GSM users are not harmed by interference from the femtocells. Difference in the characteristics of GSM and LTE technologies is exploited to enable the spectrum sharing. The...
Scratchpad memory (SPM) is commonly used in embedded system because it is more efficient than cache in both performance and energy, and it can satisfy real time requirements as well. A compiler driven method is proposed in this paper to optimally mapping code segments to SPM at runtime. The algorithm uses compiler to identify hotspots in programs based on a greedy cost model, and utilizes DMA transfer...
This paper discusses the development of the current environmental modeling systems, and analyzes the inadequacies of these systems, and points out that these systems lack either a full range of modeling support for environmental modeling elements or the integration of various spatial information processing and analysis methods. Based on the analysis of environmental problems Conceptual Modeling elements...
Privacy-preserving computational geometry (PPCG) is a Secure Multi-party Computation problem. Determining the relationship of a point and a hyperspace is a security of the points-range inclusion problem which is one of PPCG problems. This paper studies the special SMC protocols to solve the special computational geometry problem, uses random technology to improve efficiency, so that it can be better...
We design and implement a Mandatory Access Control (MAC) system in distributed virtual computing environment, named DVM-MAC, aiming to provide distributed trust through enforcing MAC policies. In DVM-MAC, Prioritized Chinese Wall (PCW) model is implemented to control potential covert channels between VMs in both single node and distributed environment. A policy enforcement module locates inside Xen...
We propose a novel WDM-PON architecture to realize dynamic wavelength assignment. Finite ONUs waiting model based on priority-rotation algorithm is applied to the system in order to evaluate network performance.
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