Institute of Electrical and Electronics Engineers

Displaying 81-120 of 8500 results

  • White Papers // Jan 2013

    Antenna Selection in Spatial Modulation Systems

    Novel transmit antenna selection techniques are conceived for Spatial Modulation (SM) systems and their Symbol Error Rate (SER) performance is investigated. Specifically, low-complexity Euclidean Distance optimized Antenna Selection (EDAS) and Capacity Optimized Antenna Selection (COAS) are studied. It is observed that the COAS scheme gives a better SER performance than...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    Efficient and Side-Channel Resistant Authenticated Encryption of FPGA Bitstreams

    State-of-the-art solutions for FPGA bitstream protection rely on encryption and authentication of the bitstream to both ensure its confidentiality, thwarting unauthorized copying and reverse engineering, and prevent its unauthorized modification, maintaining a root of trust in the field. Adequate protection of the FPGA bitstream is of paramount importance to sustain...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    Two-Way Training for Discriminatory Channel Estimation in Wireless MIMO Systems

    In this paper, the authors examines the use of two-way training to efficiently discriminate the channel estimation performances at a Legitimate Receiver (LR) and an Unauthorized Receiver (UR) in a Multiple-Input Multiple-Output (MIMO) wireless system. This paper improves upon the original Discriminatory Channel Estimation (DCE) scheme proposed by Chang et...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    Critical Density for Connectivity in 2D and 3D Wireless Multi-hop Networks

    In this paper the authors investigate the critical node density required to ensure that an arbitrary node in a large-scale wireless multi-hop network is connected (via multi-hop path) to infinitely many other nodes with a positive probability. The establishment of a direct connection between any two nodes is independent of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    A Random Matrix Approach to the Finite Blocklength Regime of MIMO Fading Channels

    In this paper, the authors provide a novel central limit theorem (CLT) for the information density of the MIMO Rayleigh fading channel under white Gaussian inputs, when the data blocklength n and the number of transmit and receive antennas K and N, respectively, are large but of similar order of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    ProtoGENI, a Prototype GENI Under Security Vulnerabilities: An Experiment-Based Security Study

    ProtoGENI is one of the prototype implementations of Global Environment for Network Innovations (GENI). ProtoGENI proposes and executes the GENI control framework, including resource management and allocation for authenticated and authorized experimenters. Security and inevitably are the most important concerns in the whole development process. In this paper, the authors...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    Distributed Utility Maximization for Network Coding Based Multicasting: A Critical Cut Approach

    Recent advances in network coding have greatly facilitated information multicasting in communication networks. One central issue in practically deploying network coding in a shared network is the adaptive and economic allocation of network resources. Such an issue can be formulated as a globally coupled optimization problem, where the net-utility the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2013

    Exponential and Power Law Distribution of Contact Duration in Urban Vehicular Ad Hoc Networks

    Contact duration between moving vehicles is one of the key metrics in Vehicular Ad-hoc NETworks (VANETs) that critically influences the design of routing schemes and network throughput. Due to prohibitive costs to collect enough realistic contact records, little experimental work has been conducted to study the contact duration in urban...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    A Full-Duplex Diversity-Assisted Hybrid Analogue/Digitized Radio Over Fibre for Optical/Wireless Integration

    A duplex Radio Over Fiber (ROF) ring architecture is proposed taking into account the constraints imposed by the cost of fiber laying and of the optical/electronic components, as well as the spectral efficiency and the duplex link performance. It has been shown that relying on Analogue ROF (AROF) and state...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Private Broadcasting Over Independent Parallel Channels

    The authors study private broadcasting of two messages to two groups of receivers over independent parallel channels. One group consists of an arbitrary number of receivers interested in a common message, whereas the other group has only one receiver. Each message must be kept confidential from the receiver(s) in the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Impacts of Data Quality on Real-Time Locational Marginal Price: A Worst Case Analysis

    The problem of characterizing impacts of worst data on real-time Locational Marginal Price (LMP) is considered. Because the real-time LMP is computed from the estimated network topology and system state, bad data that cause errors in topology processing and state estimation affect real-time LMP. It is shown that the power...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    VENTTI: A Vertically Integrated Framework for Simulation and Optimization of Networks-On-Chip

    Networks-On-Chip have been proposed to enable the integration of heterogeneous SoCs in a power-efficient and scalable way. The authors present VENTTI, a design and simulation environment that combines a virtualized platform, a NoC synthesis tool, and a library of NoC building blocks characterized at different abstraction levels. By efficiently simulating...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Quantized Network Coding for Correlated Sources

    Non-adaptive joint source network coding of correlated sources is discussed in this paper. By studying the information flow in the network, the authors propose quantized network coding as an alternative for packet forwarding. This technique has both network coding and distributed source coding advantages, simultaneously. Quantized network coding is a...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Distributed Rate Allocation in Inter-Session Network Coding

    In this paper, the authors propose a distributed rate allocation algorithm that minimizes the average decoding delay in inter-session network coding systems. They consider a scenario where network nodes, or peers, are organized in a mesh network, with every peer interested in the content of one of the several available...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Multi-View Video Packet Scheduling

    In multi-view applications, multiple cameras acquire the same scene from different viewpoints and produce correlated video streams. This results in large amounts of highly redundant data. In order to save resources, it is critical to handle properly this correlation during encoding and transmission of the multi-view data. In this paper,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Optimal Pricing Effect on Equilibrium Behaviors of Delay-Sensitive Users in Cognitive Radio Networks

    This paper studies price-based spectrum access control in cognitive radio networks, which characterizes network operators' service provisions to delay-sensitive Secondary Users (SUs) via pricing strategies. Based on the two paradigms of shared-use and exclusive-use Dynamic Spectrum Access (DSA), the authors examine three network scenarios corresponding to three types of secondary...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    AS-CRED: Reputation and Alert Service for Interdomain Routing

    As the backbone routing system of the Internet, the operational aspect of the interdomain routing is highly complex. Building a trustworthy ecosystem for interdomain routing requires the proper maintenance of trust relationships among tens of thousands of peer IP domains called Autonomous Systems (ASes). ASes today implicitly trust any routing...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Design and Implementation of a Low-Complexity Symbol Detector for Sparse Channels

    In this paper, the authors present a low-complexity symbol detector for communication channels which have long spanning durations but a sparse multipath structure. Traditional maximum-likelihood sequence estimation using the Viterbi algorithm can provide optimal error performance for eliminating the multipath effect, but the hardware complexity grows exponentially with channel length...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Distributed Antenna Systems in Fractional-Frequency-Reuse-Aided Cellular Networks

    Distributed Antenna System (DAS)-aided Unity Frequency Reuse (UFR) and Fractional Frequency Reuse (FFR) trans mission scenarios are investigated in this paper, employing the classic multi objective of Non-dominated Sorting Genetic Algorithm II (NSGA-II) for maximizing cell throughput and the coverage. More specifically, Coordinated MultiPoint (CoMP) cooperation is invoked among the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Performance Investigation of Different Space-Time Codes for Future Wireless Communication

    A Multiple-Input Multiple-Output (MIMO) wireless system uses multiple transmits and multiple receive antennas. The usage of multiple antennas provides a substantial increase in the capacity of the wireless system without requiring much increase in the system bandwidth. In this paper, the authors investigate the different space-time codes for future wireless...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Quality of Service (QoS) in Wireless Network, VOIP Simulation Environment

    A Quality of Service (QoS) is determines if a wireless technology can successfully deliver high value services such as voice and video. The PHY and MAC layers of 802.16 are described in detail with regarding their QoS. The relations and interactions of these QoS mechanisms are described to give an...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Attacks and Countermeasures in Wireless Sensor Network

    Security is need for Network Management and Implementation. Security means that provide Security Issues that provide protection against Attack and Attacker. Wireless Sensor Network contains different application like as Military, Environmental, Health and Commercial application. In Wireless Sensing Technology combined with processing power and Wireless communication. So Wireless communication Technology...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Role of Angular Momentum Dependent Inertia in One-Quasiparticle Rotational Bands

    Rotational spectra have been well established as an important feature of the excited states in heavy nuclei. The rotational model proposed by Bohr requires that the spectrum of an odd-A rotational nucleus corresponds to that of a particle coupled to a non-spherical rotating core. In this paper, the authors present...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Optimal Design of Long Haul Optical Communication Link Operating at 10 Gbps

    An optical communication system operating at 10 Gbps based on fiber Bragg grating is presented in this paper. Dispersion has been a main limiting factor in optical communication transmission system. The use of FBG as dispersion compensator shows improved transmission performance in optical fiber communication system. This paper simulates the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    A (L) Slotted Rectangular Micro-Strip Multiband Patch Antenna

    In this paper, the authors present a proposed design for Rectangular micro-strip patch antenna by cutting L shaped slots in the Rectangular patch which operates at four central frequencies 1.75,2.1,2.85,3.49GHz Which is a new multi-frequency micro-strip antenna. Using proposed antenna design and micro strip feeding at proper position they find...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Autonomic Wireless Sensor Networks in Real Time Application

    Wireless ad hoc networks of sensor nodes are envisioned to be deployed in the physical environment to monitor a wide variety of real-world phenomena. Wireless Sensor Network's (WSN's) are becoming popular in military and civilian applications such as surveillance, monitoring, disaster recovery, home automation and many others. The paper presents...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    An Implantable Wireless Sensor System and Transreceiver for Rf Telemetry Applications

    In this paper, the authors describe the design and implementation of wireless sensor system and low power transreceiver for the RF telemetry system. RF telemetry system having two modules: external module and internal module. The external module consists of a control unit, an inductive energy generating unit, and an RF...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Cloud Computing: Security Risks and Its Future

    The cloud is a next generation platform that provides dynamic resource pools, virtualization, and high availability. Today, cloud computing have the ability to utilize scalable, distributed computing environments within the confines of the Internet. This paper represent clear description of with different characteristics of cloud computing. Customers are also very...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    Comparative Study of Adhoc Routing Protocols Aodv & DSR in Mobile Adhoc Network

    A Mobile Ad-hoc NETwork (MANET) is a kind of wireless ad-hoc network, and is a self configuring network of mobile routers connected by wireless links. It is a wireless network without infrastructure. Self configurability and easy deployment feature of the MANET resulted in numerous applications in this modern era. Efficient...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    A Method for Broadband Full-Duplex MIMO Radio

    The authors present a Time-Domain Transmit Beamforming (TDTB) method for Self-Interference Cancelation (SIC) at the Radio Frequency (RF) frontend of the receivers on broadband full-duplex MIMO radios. It is shown that the conventional Frequency-Domain Transmit Beamforming (FDTB) method along with the Orthogonal Frequency Division Multiplexing (OFDM) framework does not generally...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    VUPIC Virtual Machine Usage Based Placement in IaaS Cloud

    Efficient resource allocation is one of the critical performance challenges in an Infrastructure as a Service (IaaS) cloud. Virtual Machine (VM) placement and migration decision making methods are integral parts of these resource allocation mechanisms. The authors present a novel virtual machine placement algorithm which takes performance isolation amongst VMs...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2012

    FireCol: A Collaborative Protection Network for the Detection of Flooding DDoS Attacks

    Distributed Denial-of-Service (DDoS) attacks remain a major security problem, the mitigation of which is very hard especially when it comes to highly distributed botnet-based attacks. The early discovery of these attacks, although challenging, is necessary to protect end-users as well as the expensive network infrastructure resources. In this paper, the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    CloudMoV: Cloud-based Mobile Social TV

    The rapidly increasing power of personal mobile devices (smartphones, tablets, etc.) is providing much richer contents and social interactions to users on the move. This trend however is throttled by the limited battery lifetime of mobile devices and unstable wireless connectivity, making the highest possible quality of service experienced by...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Zero Knowledge Password Authentication Protocol

    In many applications, the password is sent as cleartext to the server to be authenticated thus providing the eavesdropper with opportunity to steal valuable data. This paper presents a simple protocol based on zero knowledge proof by which the user can prove to the authentication server that he has the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    On The Reduction of Power Loss Caused by Imperfect Spectrum Sensing in OFDMA-Based Cognitive Radio Access

    Cognitive Radio provides a promising solution for the spectrum scarcity in wireless systems. The main stage of a successful cognitive transmission is the spectrum sensing stage, where the spectrum is sensed to detect and avoid interfering with licensed users. Unfortunately, regardless of the type of the spectrum sensing technique employed,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Performance of Precoding Assisted Dual-Polarized Multi-Cell MIMO Downlink Communications

    Conventional uni-polarized Multiple Input Multiple Output (MIMO) antenna systems offer the advantages of higher data rate and higher reliability through the use of spatial multiplexing and space-time coding, respectively. However, the cost and space constraints have led to the use of dual-polarized MIMO antenna systems where two spatially separated uni-polarized...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Cross-Layer Dynamic Rate Adaptations for Green Cognitive Radio Networks

    The authors investigate cross-layer rate adaptation techniques for a Secondary User (SU) equipped with a finite buffer in green Cognitive Radio networks. They assume that the activity statistics of the licensed Primary Users (PUs) channels are independent and identically distributed, and a SU detects their states using a spectrum sensing...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Service Provisioning in Virtualization-based Cloud Computing: Modeling and Optimization

    Cloud computing is an emerging computing paradigm that may change the way how information services are provisioned. Network virtualization plays a crucial role in a Cloud environment for virtualizing various network infrastructures as services. Therefore virtual network services should be integrated with Cloud service to form the composite Cloud service....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Cooperative Communications: from Theory to Experimental Implementation

    Over the last years, cooperative communications have been studied from both fundamental and practical points of view. However, most of the existing studies of cooperative communications rely on math or computer simulation. In this paper, the authors describe the implementation of a cooperative communication strategy for wireless networks in a...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    ANFIS-based Quality Prediction Models for AMR Telephony in Public 2G/3G Mobile Networks

    The scope of this research paper is the proposal of voice quality prediction models, based on Adaptive Neuro-Fuzzy Inference Systems (ANFIS), for Adaptive Multi Rate (AMR) telephony service provided by GSM and UMTS rollout public land mobile networks. For the scope of the authors' research they performed an experimental drive-test...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2010

    Order Statistics for Voice Activity Detection in VoIP

    Real-time voice communication over the Internet has rapidly gained popularity. It is indeed essential to reduce the total bandwidth consumption to efficiently use the available bandwidth for the subscribers having low speed connectivity and even otherwise. In this paper, the authors introduce a novel technique to identify the voice and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2012

    Jump-Stay Rendezvous Algorithm for Cognitive Radio Networks

    Cognitive Radio Networks (CRNs) have emerged as advanced and promising paradigm to exploit the existing wireless spectrum opportunistically. It is crucial for users in CRNs to search for neighbors via rendezvous process and thereby establish the communication links to exchange the information necessary for spectrum management and channel contention etc....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2012

    Cyclic Feature Detection With Sub-Nyquist Sampling for Wideband Spectrum Sensing

    For cognitive radio networks, efficient and robust spectrum sensing is a crucial enabling step for dynamic spectrum access. Cognitive radios need to not only rapidly identify spectrum opportunities over very wide bandwidth, but also make reliable decisions in noise-uncertain environments. Cyclic spectrum sensing techniques work well under noise uncertainty, but...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2011

    Weighted Energy Detection for Non-coherent Ultra-Wideband Receiver Design

    For Ultra-WideBand (UWB) impulse radios, non-coherent energy detectors are motivated for their simple circuitry and effective capture of multipath energy. A major performance-degrading factor in energy detection is the noise floor, which is aggravated for low-duty-cycle UWB signals with a large time-bandwidth product. In this paper, Weighted Energy Detection (WED)...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2010

    Decentralized Sparse Signal Recovery for Compressive Sleeping Wireless Sensor Networks

    This paper develops an optimal decentralized algorithm for sparse signal recovery and demonstrates its application in monitoring localized phenomena using energy-constrained large-scale wireless sensor networks. Capitalizing on the spatial sparsity of localized phenomena, compressive data collection is enforced by turning off a fraction of sensors using a simple random node...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2010

    Optimal Power Control for Cognitive Radio Networks Under Coupled Interference Constraints: A Cooperative Game-Theoretic Perspective

    Distributed power control is investigated for Cognitive Radio Networks (CRNs) based on a cooperative game-theoretic framework. Taking into consideration both network efficiency and user fairness, a cooperative Nash Bargaining Power-Control Game (NBPCG) model is formulated, where Interference Power Constraints (IPCs) are imposed to protect the Primary Users' (PUs') transmissions, and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2010

    Localized Structural Health Monitoring Using Energy-Efficient Wireless Sensor Networks

    This paper presents a localized information processing approach for long-term, online Structural Health Monitoring (SHM) using Wireless Sensor Networks (WSNs). Based on the embedded AR-ARX method, each sensor independently calculates a statistical damage-sensitive coefficient using the measured acceleration data during each monitoring period. A non-linear programming formulation is developed to...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Aug 2009

    Cramer - Rao Bounds for Hybrid TOA/DOA-Based Location Estimation in Sensor Networks

    This paper derives the Cramer - Rao Bound (CRB) for source location estimation using joint Time-/Direction-Of-Arrival (TOA/DOA) measurements collected in a wireless sensor network setup. Each sensor is capable of measuring both TOA and DOA from a signal source, which enables it to estimate the source's location individually. Data fusion...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2008

    Maximum Likelihood Multiple Access Timing Synchronization for UWB Communications

    Rapid and reliable timing synchronization is a demanding task in the receiver design for Ultra-WideBand (UWB) communication systems, especially when concurrent multiple access is called for. This paper derives a maximum likelihood based timing synchronization scheme for UWB multiple access. Relying on a set of user-specific training sequences, the novel...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2010

    Multiple Symbol Differential Detection for UWB Communications

    Multiple Symbol Differential Detection (MSDD) offers high-performance symbol recovery and bypasses training or channel estimation, which are highly desired features in low-power Ultra-WideBand (UWB) communications. However, UWB impulse radios entail distinct signaling structures and stringent performance-complexity requirements, giving rise to the need for a new MSDD scheme capable of coping...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2010

    Joint Multi-Source Localization and Environment Perception in Wireless Sensor Networks

    This paper addresses the problem of joint multi-source localization and environment perception in Wireless Sensor Networks (WSNs) based on Received Signal Strength (RSS). Contrary to the traditional RSS approaches which assume known number of sources and known parameter of environments, the authors propose to estimate the sources with unknown number...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2010

    Collaborative Sparse Signal Recovery in Hierarchical Wireless Sensor Networks

    This paper investigates the design choices and implementation schemes for information fusion among cluster heads in a large-scale hierarchical wireless sensor network. Two main issues addressed are: whether to choose centralized processing with aid of a fusion center or decentralized collaboration among cluster heads, and for the latter choice, how...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2008

    Compressed Wideband Sensing in Cooperative Cognitive Radio Networks

    In emerging Cognitive Radio (CR) networks with spectrum sharing, the first cognitive task preceding any dynamic spectrum access is the sensing and identification of spectral holes in wireless environments. This paper develops a distributed compressed spectrum sensing approach for (ultra-)wideband CR networks. Compressed sensing is performed at local CRs to...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2011

    Reliability-Driven Energy-Efficient Task Scheduling for Multiprocessor Real-Time Systems

    This paper proposes a reliability-driven task scheduling scheme for multiprocessor real-time embedded systems that optimizes system energy consumption under stochastic fault occurrences. The task scheduling problem is formulated as an integer linear program where a novel fault adaptation variable is introduced to model the uncertainties of fault occurrences. The proposed...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2011

    Hierarchical Cross-Entropy Optimization for Fast On-Chip Decap Budgeting

    Decoupling capacitor (decap) has been widely used to effectively reduce dynamic power supply noise. Traditional decap budgeting algorithms usually explore the sensitivity-based nonlinear optimizations or Conjugate Gradient (CG) methods, which can be prohibitively expensive for large-scale decap budgeting problems and cannot be easily parallelized. In this paper, the authors propose...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2009

    Gate Sizing for Cell-Library-Based Designs

    With increasing time-to-market pressure and shortening semiconductor product cycles, more and more chips are being designed with library-based methodologies. In spite of this shift, the problem of discrete gate sizing has received significantly less attention than its continuous counterpart. On the other hand, cell sizes of many realistic libraries are...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2009

    A Fully Polynomial-Time Approximation Scheme for Timing-Constrained Minimum Cost Layer Assignment

    As VLSI technology enters the nanoscale regime, the interconnect delay becomes the bottleneck of circuit performance. Compared with gate delays, wires are becoming increasingly resistive, making it more difficult to propagate signals across the chip. However, more advanced technologies (65 and 45 nm) provide relief as the number of metal...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2011

    Power Grid Analysis With Hierarchical Support Graphs

    It is increasingly challenging to analyze present day large-scale Power Delivery Networks (PDNs) due to the drastically growing complexity in power grid design. To achieve greater runtime and memory efficiencies, a variety of preconditioned iterative algorithms has been investigated in the past few decades with promising performance, while incremental power...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2010

    The Fast Optimal Voltage Partitioning Algorithm for Peak Power Density Minimization

    Increasing transistor density in nanometer integrated circuits has resulted in large on-chip power density. As a high-level power optimization technique, voltage partitioning is effective in mitigating power density. Previous works on voltage partitioning attempt to address it through minimizing total power consumption over all voltage partitions. Since power density significantly...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2012

    Generalized FMD Detection for Spectrum Sensing Under Low Signal-to-Noise Ratio

    Spectrum sensing is a fundamental problem in cognitive radio. The authors propose a function of covariance matrix based detection algorithm for spectrum sensing in cognitive radio network. Monotonically increasing property of function of matrix involving trace operation is utilized as the cornerstone for this algorithm. The advantage of proposed algorithm...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Apr 2009

    Virtual Wired Transmission Scheme Using Directional Antennas to Improve Energy Efficiency in Wireless Mobile Ad-Hoc Networks

    Energy efficiency improvement methods can be applied at different layers of the network architecture for mobile ad-hoc networks. There have been many research efforts on improving the performance parameters at physical, data link, and network layers. The properties of directional antennas have been exploited for better energy efficiency. Some of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2008

    Spatial Resource Reuse in the Multi-Hop Cellular Networks: Difficulties and Benefits

    The introduction of relays into legacy cellular networks is gaining more of an interest in the 4th Generation (4G) wireless systems. In the presence of relays, simultaneous transmission of both Base Stations (BS) and Relay Stations (RS) on the same resources is possible, and consequently much higher throughput can be...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2008

    Multi-Path Aggregate Flow Control for Real-Time Traffic Engineering

    The authors present an online distributed traffic engineering method for ISP networks with multi-path routing. The method is based on edge-to-edge aggregate flow control that balances load and makes the network congestion-free in real time, responding to actual traffic demands whether they are under-load or overloaded. Moreover, it allows ISPs...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2011

    A Geolocation Databases Study

    The geographical location of Internet IP addresses is important for academic research, commercial and homeland security applications. Thus, both commercial and academic databases and tools are available for mapping IP addresses to geographic locations. Evaluating the accuracy of these mapping services is complex since obtaining diverse large scale ground truth...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2010

    DelayCheck: Scheduling Voice Over Multi-Hop Multi-Channel Wireless Mesh Networks

    In this paper, the authors consider the goal of scheduling the maximum number of voice calls in a TDMA-based multi-radio, multi-channel mesh network. One of the main challenges to achieve this goal is the difficulty in providing strict (packet-level) delay guarantees for voice traffic in capacity limited multi-hop wireless networks....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2011

    RODEO: Robust and Rapidly Deployable TDM Mesh With QoS Differentiation

    The authors present RODEO, a RObust and rapidly DEplOyable wireless mesh network designed for applications such as disaster management. Natural disasters often destroy existing communication infrastructure, thus forcing rescue teams to deploy their own networks for communication. Such networks must be rapidly deployable, capable of recovering from node failure, have...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2010

    Adaptive Re-Routing Over Circuits: An Architecture for an Optical Backbone Network

    As Internet traffic continues to grow unabated at an exponential rate, it is unclear whether the existing packet routing network architecture based on electronic routers will continue to scale at the necessary pace. On the other hand, optical fiber and switching elements have demonstrated an abundance of capacity that appears...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2010

    Machine Learning Based Call Admission Control Approaches: A Comparative Study

    The importance of providing guaranteed Quality of Service (QoS) cannot be over-emphasised, especially in the NGN environment which supports converged services on a common IP transport network. Call Admission Control (CAC) mechanisms do provide QoS to class-based services in a proactive manner. However, due to the factors of complexity, scale...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2010

    Employing Bayesian Belief Networks for Energy Efficient Network Management

    Network Management Systems (NMS) are used to monitor the network and along with Operations Support Systems (OSS) maintain the performance with a focus on guaranteeing sustained QoS to the applications and services. One aspect that is given less importance is the energy consumption of the network elements during the off...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2010

    Leveraging Local Intracore Information to Increase Global Performance in Block-Based Design of Systems-on-Chip

    Latency-insensitive design is a methodology for System-on-Chip (SoC) design that simplifies the reuse of intellectual property cores and the implementation of the communication among them. This simplification is based on a system-level protocol that decouples the intra-core logic design from the design of the inter-core communication channels. Each core is...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2009

    CTC: An End-to-End Flow Control Protocol for Multi-Core Systems-on-Chip

    The authors propose Connection Then Credits (CTC) as a new end-to-end flow control protocol to handle message-dependent deadlocks in Networks-on-Chip (NoC) for multi-core systems-on-chip. CTC is based on the classic end-to-end credit-based flow control protocol but differs from it because it uses a network interface micro-architecture where a single credit...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Mar 2009

    A Methodology for Constraint-Driven Synthesis of On-Chip Communications

    The authors present a methodology and an optimization framework for the synthesis of on-chip communication through the assembly of components such as interfaces, routers, buses and links, from a target library. Models for functionality, cost, and performance of each element are captured in the library together with their composition rules....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2011

    Physical-Layer Modeling and System-Level Design of Chip-Scale Photonic Interconnection Networks

    Photonic technology is becoming an increasingly attractive solution to the problems facing today's electronic chip-scale interconnection networks. Recent progress in silicon photonics research has enabled the demonstration of all the necessary optical building blocks for creating extremely high-bandwidth density and energy-efficient links for on-chip and off-chip communications. From the feasibility...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2010

    Circuit-Switched Memory Access in Photonic Interconnection Networks for High-Performance Embedded Computing

    As advancements in CMOS technology trend toward ever increasing core counts in chip multiprocessors for high-performance embedded computing, the discrepancy between on- and off-chip communication bandwidth continues to widen due to the power and spatial constraints of electronic off-chip signaling. Silicon photonics-based communication offers many advantages over electronics for network-on-chip...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2009

    Networks-on-Chip in Emerging Interconnect Paradigms: Advantages and Challenges

    Communication plays a crucial role in the design and performance of multi-core Systems-on-Chip (SoCs). Networks-on-Chip (NoCs) have been proposed as a promising solution to simplify and optimize SoC design. However, it is expected that improving traditional communication technologies and interconnect organizations will not be sufficient to satisfy the demand for...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2009

    Analysis of Photonic Networks for a Chip Multiprocessor Using Scientific Applications

    As multiprocessors scale to unprecedented numbers of cores in order to sustain performance growth, it is vital that these gains are not nullified by high energy consumption from inter-core communication. With recent advances in 3D Integration CMOS technology, the possibility for realizing hybrid photonic-electronic networks-on-chip warrants investigating real application traces...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2012

    Dynamic Spectrum Access: From Cognitive Radio to Network Radio

    Dynamic spectrum access is a new spectrum sharing paradigm that allows secondary users to access the abundant spectrum holes or white spaces in the licensed spectrum bands. DSA is a promising technology to alleviate the spectrum scarcity problem and increase spectrum utilization. While DSA has attracted many research efforts recently,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2012

    Routing in Pocket Switched Networks

    Pocket Switched Networks (PSNs) provide a new networking paradigm that takes advantage of human mobility to distribute data. Due to the frequent and long-duration disruptions of network links, routing in PSNs is non-trivial. In this paper, the authors first outline the challenges of PSN routing. After that, they summarize the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2012

    GenProg: A Generic Method for Automatic Software Repair

    This paper describes GenProg, an automated method for repairing defects in off-the-shelf, legacy programs without formal specifications, program annotations, or special coding practices. GenProg uses an extended form of genetic programming to evolve a program variant that retains required functionality, but is not susceptible to a given defect, using existing...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2011

    Class Schema Evolution for Persistent Object-Oriented Software: Model, Empirical Study, and Automated Support

    With the wide support for object serialization in object-oriented programming languages, persistent objects have become common place and most large object-oriented software systems rely on extensive amounts of persistent data. Such systems also evolve over time. Retrieving previously persisted objects from classes whose schema has changed is, however, difficult and...

    Provided By Institute of Electrical and Electronics Engineers