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Tag Archive: Ns2 Projects

High-Speed Modulation of Lateral p-i-n Diode Structure Electro-Absorption Modulator Integrated With DFB Laser

Large-scale photonic integrated circuits (PICs) are essential for reducing the cost and power consumption of optical networks. Selective doping by means of thermal diffusion and ion implantation is suitable for fabricating PICs because it enables doping into desired regions without crystal growth. In this paper, we report the fabrication of a lateral-p-i-n-diode-structure electro-absorption modulator (EAM) integrated […]

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Advancing China?s Smart Grid: Phasor Measurement Units in a Wide-Area Management System

In developing a smart grid the measurement technology used plays a fundamental role for advanced power-system analysis and control. Phasor measurement units (PMUs), as part of a wide-area measurement system (WAMS), increasingly constitute the critical measurement infrastructures for transmission and generation systems. As of 2013, approximately 2,400 PMU sets had been deployed in power grids […]

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Fast and Memory-Efficient Routing Algorithms for Field Programmable Gate Arrays with Sparse Intra-cluster Routing Crossbars

FPGA routing is one of the most time consuming steps in a typical CAD flow. The problem itself is similar to the NP-complete problem of computing a set of disjoint paths in a graph. The routing resource graph (RRG) that represents an FPGA routing network is necessarily large, and becomes even larger when modeling modern FPGAs that […]

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DSP-Enabled Flexible ROADMs without Optical Filters and O-E-O Conversions

Utilising Hilbert-pair-based digital filtering, intensity modulation and passive optical coupling, optical filter- and O-E-O conversion-free ROADMs with excellent flexibility, colorlessness, gridlessness, contentionlessness, adaptability and transparency to physical-layer network characteristics are proposed and evaluated, for the first time, which offer DSP-enabled dynamic add/drop operations at wavelength, sub-wavelength and orthogonal sub-band levels. Extensive numerical simulations are undertaken to explore […]

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Supporting multi data stores applications in cloud environments

The production of huge amount of data and the emergence of cloud computing have introduced new requirements for data management. Many applications need to interact with several heterogeneous data stores depending on the type of data they have to manage: traditional data types, documents, graph data from social networks, simple key-value data, etc. Interacting with heterogeneous […]

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Auction Mechanisms Toward Efficient Resource Sharing for Cloudlets in Mobile Cloud Computing

Mobile cloud computing offers an appealing paradigm to relieve the pressure of soaring data demands and augment energy efficiency for future green networks. Cloudlets can provide available resources to nearby mobile devices with lower access overhead and energy consumption. To stimulate service provisioning by cloudlets and improve resource utilization, a feasible and efficient incentive mechanism is […]

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Combining Static and Dynamic Data Coalescing in Unified Parallel C

Significant progress has been made in the development of programming languages and tools that are suitable for hybrid computer architectures that group several shared-memory multicores interconnected through a network. This paper addresses important limitations in the code generation for Partitioned Global Address Space (PGAS) languages. These languages allow fine-grained communication and lead to programs that perform […]

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Wireless Device Identification Based on RF Oscillator Imperfections

The exploitation of slight imperfections of transmitters’ hardware for identification of wireless devices has recently emerged as an effective method for security enhancement in wireless access networks. Previously, we introduced a modelbased approach for device identification based on the imperfections of two main wireless transmitter components: the digitalto- analog converter and the power amplifier. Here, motivated […]

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SLA-Aware Tenant Placement and Dynamic Resource Provision in SaaS

Software as a Service (SaaS) is an increasingly important service delivery model in cloud computing, and multitenancy makes it possible to support large scale customized tenants with only one code base. However, the complexity of multi-tenant architecture may lead to poor performance and low resource utilization. The customized demands may also lead to high operating […]

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A Co-design Approach for Hardware Optimizations in Multicore Architectures Using MCAPI

Current SoC platforms targeting high-performance with high power efficiency rely on replicating several processing cores while adding dedicated hardware units for specific tasks. However, programming such architectures demand a high effort when compared to homogeneous multiprocessors since there is no widely used standard for heterogeneous embedded systems. The use of standard application programming interfaces (APIs) […]

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