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Hindawi Publishing
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Selected Papers from the 17th Reconfigurable Architectures Workshop (RAW2010)
April 20, 2011, 12:00am PDT
This special issue of IJRC includes papers selected from the 17th Reconfigurable Architectures Workshop (RAW 2010) held in Atlanta, GA, USA, in April 29-30, 2010. RAW 2010 was associated with the...
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A Self-Checking Hardware Journal for a Fault-Tolerant Processor Architecture
March 24, 2011, 12:00am PDT
The authors introduce a specialized self-checking hardware journal being used as a centerpiece in their design strategy to build a processor tolerant to transient faults. Fault tolerance here...
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Exploring Online Synthesis for CGRAs with Specialized Operator Sets
February 10, 2011, 12:00am PST
The design of energy-efficient systems has become a major challenge for engineers over the last decade. One way to save energy is to spread out computations in space rather than in time (as...
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A Middleware Approach to Achieving Fault Tolerance of Kahn Process Networks on Networks on Chips
March 24, 2011, 12:00am PDT
Kahn Process Networks (KPNs) is a distributed model of computation used for describing systems where streams of data are transformed by processes executing in sequence or parallel. Autonomous...
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Static Scheduling of Periodic Hardware Tasks with Precedence and Deadline Constraints on Reconfigurable Hardware Devices
February 10, 2011, 12:00am PST
Task graph scheduling for reconfigurable hardware devices can be defined as finding a schedule for a set of periodic tasks with precedence, dependence, and deadline constraints as well as their...
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FPGA Acceleration of Communication-Bound Streaming Applications: Architecture Modeling and a 3D Image Compositing Case Study
February 19, 2011, 12:00am PST
Reconfigurable computers usually provide a limited number of different memory resources, such as host memory, external memory, and on-chip memory with different capacities and communication...
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Exploration of Heterogeneous FPGA Architectures
February 10, 2011, 12:00am PST
Mesh-based heterogeneous FPGAs are commonly used in industry and academia due to their area, speed, and power benefits over their homogeneous counterparts. These FPGAs contain a mixture of logic...
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Boosting Parallel Applications Performance on Applying DIM Technique in a Multiprocessing Environment
February 14, 2011, 12:00am PST
Limits of instruction-level parallelism and higher transistor density sustain the increasing need for multiprocessor systems: they are rapidly taking over both general-purpose and embedded...
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Prime Field ECDSA Signature Processing for Reconfigurable Embedded Systems
February 10, 2011, 12:00am PST
Growing ubiquity and safety relevance of embedded systems strengthen the need to protect their functionality against malicious attacks. Communication and system authentication by digital signature...
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Operating System for Runtime Reconfigurable Multiprocessor Systems
February 14, 2011, 12:00am PST
Operating systems traditionally handle the task scheduling of one or more application instances on processor-like hardware architectures. RAMPSoC, a novel runtime adaptive multiprocessor...
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Dynamic Application Model for Scheduling with Uncertainty on Reconfigurable Architectures
February 10, 2011, 12:00am PST
Applications executed on embedded systems require dynamicity and flexibility according to user and environment needs. Dynamically reconfigurable architecture could satisfy these requirements but...
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OveRSoC: A Framework for the Exploration of RTOS for RSoC Platforms
December 20, 2009, 12:00am PST
This paper presents the OveRSoC project. The objective is to develop an exploration and validation methodology of embedded Real Time Operating Systems (RTOSs) for Reconfigurable...
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Speeding Up FPGA Placement via Partitioning and Multithreading
November 12, 2009, 12:00am PST
One of the current main challenges of the FPGA design flow is the long processing time of the placement and routing algorithms. In this paper, the authors propose a hybrid parallelization...
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Parallel Processor for 3D Recovery from Optical Flow
October 8, 2009, 12:00am PDT
3D recovery from motion has received a major effort in computer vision systems in the recent years. The main problem lies in the number of operations and memory accesses to be performed by the...
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Experiencing a Problem-Based Learning Approach for Teaching Reconfigurable Architecture Design
August 28, 2009, 12:00am PDT
This paper presents the "Reconfigurable computing" teaching part of a computer science master course (first year) on parallel architectures. The practical work sessions of this course rely on...
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An ILP Formulation for the Task Graph Scheduling Problem Tailored to Bi-Dimensional Reconfigurable Architectures
September 30, 2009, 12:00am PDT
This paper proposes an exact ILP formulation for the task scheduling problem on a 2D dynamically and partially reconfigurable architecture. The authors' approach takes physical constraints of the...
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Architectural Synthesis of Fixed-Point DSP Datapaths Using FPGAs
August 28, 2009, 12:00am PDT
The authors address the automatic synthesis of DSP algorithms using FPGAs. Optimized fixed-point implementations are obtained by means of considering a multiple word-length approach; a complete...
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An Automatic Design Flow for Data Parallel and Pipelined Signal Processing Applications on Embedded Multiprocessor with NoC: Application to Cryptography
September 9, 2009, 12:00am PDT
Embedded system design is increasingly based on single chip multiprocessors because of the high performance and flexibility requirements. Embedded multiprocessors on FPGA provide the additional...
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Reducing Reconfiguration Overheads in Heterogeneous Multicore RSoCs with Predictive Configuration Management
August 9, 2009, 12:00am PDT
A predictive dynamic reconfiguration management service is described here, targeting a new generation of multi-core SoC that embed multiple heterogeneous reconfigurable cores. The main goal of the...
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Answer Set versus Integer Linear Programming for Automatic Synthesis of Multiprocessor Systems from Real-Time Parallel Programs
August 24, 2009, 12:00am PDT
An automated design approach for multiprocessor systems on FPGAs is presented which customizes architectures for parallel programs by simultaneously solving the problems of task mapping, resource...
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An Interface for a Decentralized 2D Reconfiguration on Xilinx Virtex-FPGAs for Organic Computing
August 3, 2009, 12:00am PDT
Partial and dynamic online reconfiguration of Field Programmable Gate Arrays (FPGAs) is a promising approach to design high adaptive systems with lower power consumption, higher task specific...
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A Hardware Filesystem Implementation with Multidisk Support
August 4, 2009, 12:00am PDT
Modern High-End Computing systems frequently include FPGAs as compute accelerators. These programmable logic devices now support disk controller IP cores which offer the ability to introduce new,...
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Enabling Self-Organization in Embedded Systems with Reconfigurable Hardware
July 23, 2009, 12:00am PDT
Increasing complexity due to rapid progress in information technology is making systems more and more difficult to integrate and control. Due to the large amount of possible configurations and...
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FPGA Interconnect Topologies Exploration
July 20, 2009, 12:00am PDT
This paper presents an improved interconnect network for Tree-based FPGA architecture that unifies two unidirectional programmable networks. New tools are developed to place and route the largest...
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Non-Power-of-Two FFTs: Exploring the Flexibility of the Montium TP
July 9, 2009, 12:00am PDT
Coarse-grain reconfigurable architectures, like the Montium TP, have proven to be a very successful approach for low-power and high-performance computation of regular digital signal processing...
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Pipeline FFT Architectures Optimized for FPGAs
June 23, 2009, 12:00am PDT
The Fast Fourier Transform (FFT), as an efficient algorithm to compute the Discrete Fourier Transform (DFT), is one of the most important operations in modern digital signal processing and...
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A Reconfigurable Systolic Array Architecture for Multicarrier Wireless and Multirate Applications
June 23, 2009, 12:00am PDT
A Reconfigurable Systolic Array (RSA) architecture that supports the realization of DSP functions for multi-carrier wireless and multi-rate applications is presented. The RSA consists of...
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Analysis and Enhancement of Random Number Generator in FPGA Based on Oscillator Rings
June 19, 2009, 12:00am PDT
A True Random Number Generator (TRNG) is an important component in cryptographic systems. Designing a fast and secure TRNG in an FPGA is a challenging task. In this paper, the authors analyze the...
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Software Toolchain for Large-Scale RE-NFA Construction on FPGA
June 19, 2009, 12:00am PDT
The authors present a software tool-chain for constructing large-scale Regular Expression Matching (REM) on FPGA. The software automates the conversion of Regular Expressions into compact and...
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A Message-Passing Hardware/Software Cosimulation Environment for Reconfigurable Computing Systems
June 19, 2009, 12:00am PDT
High-Performance Reconfigurable Computers (HPRCs) provide a mix of standard processors and FPGAs to collectively accelerate applications. This introduces new design challenges, such as the need...
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Providing Memory Management Abstraction for Self-Reconfigurable Video Processing Platforms
June 15, 2009, 12:00am PDT
This paper presents a concept for an SDRAM controller targeting video processing platforms with dynamically Reconfigurable Processing Units (RPUs). A priority-arbitration algorithm provides the...
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Analysis and Design of a Context Adaptable SAD/MSE Architecture
May 27, 2009, 12:00am PDT
Design of flexible multimedia accelerators that can cater to multiple algorithms is being aggressively pursued in the media processors community. Such an approach is justified in the era of sub-45...
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A Decentralised Task Mapping Approach for Homogeneous Multiprocessor Network-On-Chips
May 25, 2009, 12:00am PDT
The authors present a heuristic algorithm for the run-time distribution of task sets in a homogeneous Multiprocessor network-on-chip. The algorithm is itself distributed over the processors and...
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A System on a Programmable Chip Architecture for Data-Dependent Superimposed Training Channel Estimation
May 25, 2009, 12:00am PDT
Channel estimation in wireless communication systems is usually accomplished by inserting, along with the information, a series of known symbols, whose analysis is used to define the parameters of...
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A Taxonomy of Reconfigurable Single-/Multiprocessor Systems-on-Chip
May 12, 2009, 12:00am PDT
Run-time adaptivity of hardware in processor architectures is a novel trend, which is under investigation in a variety of research labs all over the world. The run-time exchange of modules,...
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An Adaptive Message Passing MPSoC Framework
April 14, 2009, 12:00am PDT
Multi-Processor Systems-on-Chips (MPSoCs) offer superior performance while maintaining flexibility and reusability thanks to software oriented personalization. While most MPSoCs are today...
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A Design Technique for Adapting Number and Boundaries of Reconfigurable Modules at Runtime
May 17, 2009, 12:00am PDT
Run-time reconfigurable system-on-chip designs for FPGAs pose manifold demands on the underlying system architecture and design tool capabilities. The system architecture has to support varying...
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Multilevel Simulation of Heterogeneous Reconfigurable Platforms
April 15, 2009, 12:00am PDT
This paper presents a general system-level simulation and testing methodology for reconfigurable System-on-Chips, starting from behavioral specifications of system activities to multilevel...
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vMAGIC-Automatic Code Generation for VHDL
March 26, 2009, 12:00am PDT
Automatic code generation is a standard method in software engineering, improving the code reliability as well as reducing the overall development time. In hardware engineering, automatic code...
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A Reconfigurable and Biologically Inspired Paradigm for Computation Using Network-On-Chip and Spiking Neural Networks
April 13, 2009, 12:00am PDT
FPGA devices have emerged as a popular platform for the rapid prototyping of biological Spiking Neural Networks (SNNs) applications, offering the key requirement of reconfigurability. However,...
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A Fair Opportunistic Access Scheme for Multiuser OFDM Wireless Networks
February 1, 2009, 12:00am PST
The authors propose a new access scheme for efficient support of multimedia services in OFDM wireless networks, both in the up-link and in the down-link. This scheme further increases the benefits...
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Distributed and Collaborative Node Mobility Management for Dynamic Coverage Improvement in Hybrid Sensor Networks
February 4, 2011, 12:00am PST
With recent advances in deploying sensor nodes mounted on mobile platforms, node mobility is becoming an attractive alternative to improve network coverage dynamically in sensor networks. However,...
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Higher-Order Cyclostationarity Detection for Spectrum Sensing
June 15, 2010, 12:00am PDT
Recent years have shown a growing interest in the concept of Cognitive Radios (CRs), able to access portions of the electromagnetic spectrum in an opportunistic operating way. Such systems require...
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Quality-Assured and Sociality-Enriched Multimedia Mobile Mashup
August 14, 2010, 12:00am PDT
Mashups are getting more complex with the addition of rich-media and real-time services. The new research challenges will be how to guarantee the quality of the aggregated services, and how to...
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An Empirical Model for Probability of Packet Reception in Vehicular Ad Hoc Networks
November 28, 2008, 12:00am PST
Today's advanced simulators facilitate thorough studies on VANETs but are hampered by the computational effort required to consider all of the important influencing factors. In particular,...
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A Stabilizing Algorithm for Clustering of Line Networks
October 25, 2007, 12:00am PDT
The authors present a stabilizing algorithm for finding clustering of path (line) networks on a distributed model of computation. Clustering is defined as covering of nodes of a network by...
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Experimental Evaluation of TCP-Based DTN for Cislunar Communications in Presence of Long Link Disruption
September 4, 2010, 12:00am PDT
Delay/Disruption Tolerant Networking (DTN) technology is considered a new solution to highly stressed communications in space environments. To date, little work has been done in evaluating the...
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Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface
January 11, 2010, 12:00am PST
OpenAirInterface is an experimental open-source real-time hardware and software platform for experimentation in wireless communications and signal processing. With the help of OpenAirInterface,...
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Cautious Rating for Trust-Enabled Routing in Wireless Sensor Networks
October 20, 2009, 12:00am PDT
Trust aware routing in Wireless Sensor Network (WSN) is an important direction in designing routing protocols for WSN that are susceptible to malicious attacks. The common approach to provide...
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Modified Particle Swarm Optimization for Blind Deconvolution and Identification of Multichannel FIR Filters
January 13, 2010, 12:00am PST
Blind identification of MIMO FIR systems has widely received attentions in various fields of wireless data communications. Here, the authors use Particle Swarm Optimization (PSO) as the update...
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Antenna Subset Selection for Cyclic Prefix Assisted MIMO Wireless Communications over Frequency Selective Channels
January 15, 2008, 12:00am PST
Antenna (subset) selection techniques are feasible to reduce the hardware complexity of Multiple-Input Multiple-Output (MIMO) systems, while keeping the benefits of higher-order MIMO systems. Many...
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Characterizing the Path Coverage of Random Wireless Sensor Networks
February 24, 2010, 12:00am PST
Wireless sensor networks are widely used in security monitoring applications to sense and report specific activities in a field. In path coverage, for example, the network is in charge of...
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Secure Media Independent Handover Message Transport in Heterogeneous Networks
September 21, 2009, 12:00am PDT
The IEEE 802.21 framework for Media Independent Handover (MIH) provides seamless vertical handover support for multi-mode mobile terminals. MIH messages are exchanged over various wireless media...
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Polarimetric Kronecker Separability of Site-Specific Double-Directional Channel in an Urban Macrocellular Environment
January 7, 2009, 12:00am PST
This paper focuses on the modeling of a double-directional Power Spectrum Density (PSD) between the Base Station (BS) and Mobile Station (MS) based on the site-specific measurements in an urban...
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A Cooperative Congestion Control Approach within VANETs: Formal Verification and Performance Evaluation
December 15, 2009, 12:00am PST
The main objective of congestion control is to best exploit the available network resources while preventing sustained overloads of network nodes and links. Appropriate congestion control...
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Energy Detection Performance Analysis for UWB Radar Sensor Networks
January 31, 2010, 12:00am PST
Ultra wide-band radar sensor networks have intensive military and commercial applications. However, how to mitigate the interference to the existing systems and increase the spectrum utilization...
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Admission Control and Interference Management in Dynamic Spectrum Access Networks
May 9, 2010, 12:00am PDT
The authors study two important aspects to make dynamic spectrum access work in practice: the admission policy of Secondary Users (SUs) to achieve a certain degree of quality of service and the...
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Outage Performance Analysis of Cooperative Diversity with MRC and SC in Correlated Lognormal Channels
June 16, 2009, 12:00am PDT
The study of relaying systems has found renewed interest in the context of cooperative diversity for communication channels suffering from fading. This paper provides analytical expressions for...
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Pricing in Noncooperative Interference Channels for Improved Energy Efficiency
June 14, 2010, 12:00am PDT
The authors consider non-cooperative energy-efficient resource allocation in the interference channel. Energy efficiency is achieved when each system pays a price proportional to its allocated...
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Experimental Characterization of a UWB Channel for Body Area Networks
January 14, 2011, 12:00am PST
Ultra-WideBand (UWB) communication is a promising technology for wireless Body Area Networks (BANs), especially for applications that require transmission of both low and high data rates with...
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OFDMA Cellular Networks with Opportunistic Two-Hop Relays
September 27, 2009, 12:00am PDT
The authors investigate the benefits of two-hop opportunistic relay in Time Division Duplex (TDD) OFDMA cellular network configurations. The paper starts with a short analytical model for the...
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Ambient Data Collection with Wireless Sensor Networks
June 7, 2010, 12:00am PDT
One of the most important applications for Wireless Sensor Networks (WSNs) is Data Collection, where sensing data are collected at sensor nodes and forwarded to a central base station for further...
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Two Blind Adaptive Mobile Receivers in Time-Hopping PAM UWB Impulse Radio System
December 14, 2007, 12:00am PST
This paper deals with the design of blind Mobile Station (MS) receiver for Time-Hopping (TH) UltraWide-Band (UWB) Impulse Radio (IR) system employing antipodal Pulse Amplitude Modulation (PAM). In...
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Performance Analysis of Binary Exponential Backoff and Improved Backoff for WPAN
October 8, 2009, 12:00am PDT
The IEEE 802.15.3 Medium Access Control (MAC) is proposed, especially, for Wireless Personal Area Network (WPAN) short and high data rates applications, to coordinate the access to the wireless...
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Distributed and Location-Based Multicast Routing Algorithms for Wireless Sensor Networks
October 19, 2009, 12:00am PDT
Multicast routing protocols in wireless sensor networks are required for sending the same message to multiple different destinations. In this paper, the authors propose two different distributed...
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Slotted Gaussian Multiple Access Channel: Stable Throughput Region and Role of Side Information
March 19, 2008, 12:00am PDT
The authors study the relation between the stable throughput regions and the capacity regions for a Gaussian multiple-access channel. Their main focus is to study how the extent of side...
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Botnet: Classification, Attacks, Detection, Tracing, and Preventive Measures
July 19, 2009, 12:00am PDT
Botnets become widespread in wired and wireless networks, whereas the relevant research is still in the initial stage. In this paper, a survey of botnets is provided. The authors first discuss...
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Distributed Range-Free Localization Algorithm Based on Self-Organizing Maps
September 21, 2009, 12:00am PDT
In Mobile Ad Hoc NETworks (MANETs), determining the physical location of nodes (localization) is very important for many network services and protocols. This paper proposes a new Distributed...
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Dynamic Session-Key Generation for Wireless Sensor Networks
August 15, 2008, 12:00am PDT
Recently, wireless sensor networks have been used extensively in different domains. For example, if the wireless sensor node of a wireless sensor network is distributed in an insecure area, a...
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Shooter Localization in Wireless Microphone Networks
June 14, 2010, 12:00am PDT
Shooter localization in a wireless network of microphones is studied. Both the acoustic Muzzle Blast (MB) from the gunfire and the ballistic Shock Wave (SW) from the bullet can be detected by the...
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Best Signal Quality in Cellular Networks: Asymptotic Properties and Applications to Mobility Management in Small Cell Networks
March 21, 2010, 12:00am PDT
The quickly increasing data traffic and the user demand for a full coverage of mobile services anywhere and anytime are leading mobile networking into a future of small cell networks. However, due...
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New Trends on Ubiquitous Mobile Multimedia Applications
July 1, 2010, 12:00am PDT
Mobile devices present the opportunity to enhance the people's fast-growing and globally connected society, improving user-experience through novel approaches for information dissemination through...
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A Time-Variant MIMO Channel Model Directly Parametrised from Measurements
March 12, 2009, 12:00am PDT
This paper presents the Random-Cluster Model (RCM), a stochastic time-variant, frequency-selective, propagation-based MIMO channel model that is directly parametrised from measurements. Using a...
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Spatial and Temporal Fairness in Heterogeneous HSDPA-Enabled UMTS Networks
December 29, 2008, 12:00am PST
The system performance of an integrated UMTS network with both High-Speed Down-link Packet Access users and Release '99 QoS users depends on many factors like user location, number of users,...
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A Multiuser MIMO Transmit Beamformer Based on the Statistics of the Signal-to-Leakage Ratio
June 3, 2009, 12:00am PDT
A multi-user Multiple-Input Multiple-Output (MIMO) downlink communication system is analyzed in a Rayleigh fading environment. The approximate closed-form expressions for the Probability Density...
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Spatial Capacity of UWB Networks with Space-Time Focusing Transmission
November 29, 2010, 12:00am PST
Space-time focusing transmission in Impulse-Radio Ultra-WideBand (IR-UWB) systems resorts to the large number of resolvable paths to reduce the inter-pulse interference as well as the multi-user...
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Robust OFDM Timing Synchronisation in Multipath Channels
April 21, 2008, 12:00am PDT
This paper addresses pre-FFT synchronisation for Orthogonal Frequency Division Multiplex (OFDM) under varying multipath conditions. To ensure the most efficient data transmission possible, there...
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An Energy-Aware Middleware for Integrating Wireless Sensor Networks and the Internet
February 7, 2011, 12:00am PST
Wireless Sensor Networks (WSNs) have great potential for many distributed applications in different scenarios. As they grow in popularity and importance, it becomes increasingly desirable and...
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MA-MCL: Mobile-Assisted Monte Carlo Localization for Wireless Sensor Networks
April 9, 2011, 12:00am PDT
As many Wireless Sensor Networks (WSNs) applications require sensor position information, localization has been an important problem in WSNs. To reduce the number of seeds, a number of...
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Performance Evaluation of a Topology Control Algorithm for Wireless Sensor Networks
July 5, 2010, 12:00am PDT
A main design challenge in the area of sensor networks is energy efficiency to prolong the network operable lifetime. Since most of the energy is spent for radio communication, an effective...
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