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mobile - wireless communications
(58694 results)-
White Papers
Location Based Dynamic Probabilistic Broadcasting for MANETs
Sep 2011
Broadcasting has a central importance to Mobile Ad hoc NETworks (MANETs) wherein it is frequently executed for the route discovery, address resolution, the application of paging a host and many...
Provided by IDOSI
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White Papers
Risk-Aware Mitigation for MANET Routing Attacks
Apr 2012
Mobile Ad hoc NETworks (MANET) have been highly vulnerable to attacks due to the dynamic nature of its network infrastructure. Among these attacks, routing attacks have received considerable...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Privacy-Preserving Location-Based On-Demand Routing in MANETs
Dec 2011
Mobile Ad-Hoc NETworks (MANETs) are particularly useful and well-suited for critical scenarios, including military, law enforcement as well as emergency rescue and disaster recovery. When...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Group Distance Bounding Protocols
Apr 2011
Distance Bounding (DB) protocols allow one entity, the verifier, to securely obtain an upper-bound on the distance to another entity, the prover. Thus far, DB was considered mostly in the context...
Provided by ETH Zurich
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White Papers
Leveraging Social Contacts for Message Confidentiality in Delay Tolerant Networks
Apr 2009
Delay- and Disruption-Tolerant Networks (DTNs) can bring much-needed connectivity to rural areas and other settings with limited or non-existing infrastructures. High node mobility and infrequent...
Provided by University of California
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White Papers
The Transmission Multicast and the Control of QoS for IPv 6 Using the Infrastructure MPLS
Mar 2012
Recently there has been several literatures about congestion control in an Unicast/Multicast environment and also some authors tried to be exhaustive as they discussed about managing Quality of...
Provided by Wuhan University
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White Papers
Dynamic SLA-Based QoS Control for Third Generation Wireless Networks: The CADENUS Extension
Nov 2007
With the evolution of QoS-capable third generation wireless networks, the wireless network community has been increasingly looking for a framework that can provide an effective, network...
Provided by University of Cambridge
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White Papers
Concealable, Low-Cost Paper-Printed Antennas for WISP-Based RFIDs
Mar 2011
Paper-based, inkjet-printed antennas are proposed in this paper as replacement for the typical antennas used on the WISP RFID tag. These antennas are designed to be as concealable as possible. The...
Provided by Politecnico di Torino
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White Papers
A Software Radio-Based UHF RFID Reader for PHY/MAC Experimentation
Mar 2011
The authors present the design and evaluation of a flexible UHF RFID reader that enables new PHY/MAC designs to be prototyped and evaluated. Their reader is built using the USRP software radio...
Provided by University of Washington
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White Papers
Dewdrop: An Energy-Aware Runtime for Computational RFID
Mar 2011
Computational RFID (CRFID) tags embed sensing and computation into the physical world. The operation of the tags is limited by the RF energy that can be harvested from a nearby power source. The...
Provided by University of Washington
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White Papers
On Frequency-Selective Scheduling in SDMA-OFDMA Systems
Feb 2012
Orthogonal Frequency Division Multiple Access (OFDMA) is a multi-user version of the Orthogonal Frequency Division Multiplexing (OFDM) transmission technique, which divides a wideband channel into...
Provided by Humboldt University Berlin
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White Papers
Towards MAC/Anycast Diversity in IEEE 802.11n MIMO Networks
Mar 2012
Opportunistic Routing (OR) is a novel routing technique for wireless mesh networks that exploits the broadcast nature of the wireless medium. OR combines frames from multiple receivers and...
Provided by Humboldt University Berlin
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White Papers
Distributed Power Control for One-to-Many Transmissions in Gaussian Interference Channels
Apr 2012
In this paper, the authors extend the distributed power control problem for one-to-one transmissions in Gaussian interference channels to one-to-many transmission scenarios. They assume a...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Power Allocation for Multiuser Cooperative Communication Networks Under Relay Selection Degree Bounds
May 2012
This paper considers the joint power allocation and relay selection problem in multiuser cooperative communication networks, where one user can only seek a limited number of relays for...
Provided by The Chinese University of Hong Kong
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White Papers
Towards Understanding the Fundamentals of Mobility in Cellular Networks
Apr 2012
Despite the central role of mobility in wireless networks, there are surprisingly few fundamental results on its properties. This paper aims to address this gap by proposing a new Random Way-Point...
Provided by University of Texas
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White Papers
Learning Equilibrium Play for Stochastic Parallel Gaussian Interference Channels
Mar 2011
Distributed power control for parallel Gaussian interference channels recently draws great interests. However, all existing works only studied this problem under deterministic communication...
Provided by The Chinese University of Hong Kong
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White Papers
Cooperative Wireless-Based Obstacle/Object Mapping and See-Through Capabilities in Robotic Networks
Dec 2011
In this paper, the authors develop a theoretical and experimental framework for the mapping of obstacles (including occluded ones), in a robotic cooperative network, based on a small number of...
Provided by University of New Mexico
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White Papers
Robotic Router Formation in Realistic Communication Environments - A Bit Error Rate Approach
Dec 2011
In this paper, the authors consider the problem of robotic router formation, where two nodes need to maintain their connectivity over a large area, by using a number of mobile routers. They are...
Provided by University of New Mexico
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White Papers
On Path Planning for Networked Robotic Surveillance
Apr 2012
In this paper, the authors consider a robotic surveillance problem where a fixed remote station deploys a team of mobile robots to spatially explore a given workspace, detect an unknown number of...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Co-Optimization of Communication and Motion Planning of a Robotic Operation in Fading Environments
Nov 2011
In this paper, the authors consider the scenario where a robot needs to maximize the amount of information it sends to a fixed station as it moves along a predefined trajectory. They consider the...
Provided by University of New Mexico
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White Papers
A Communication-Aware Framework for Robotic Field Estimation
Sep 2011
In this paper, the authors consider the problem where a fixed fusion center utilizes a number of mobile sensors in order to estimate the spatial variations of a field. The sensors measure the...
Provided by University of New Mexico
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White Papers
Dynamic Coverage of Time-Varying Environments Using a Mobile Robot - A Communication-Aware Perspective
Sep 2011
In this paper, the authors study the problem of dynamic coverage of a number of points of interest, in a time-varying environment, using a mobile robot. They consider the scenario where the...
Provided by University of New Mexico
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White Papers
Channel Learning and Communication-Aware Motion Planning in Mobile Networks
Mar 2010
In this paper, the authors propose a communication-aware motion planning framework to ensure robust cooperative operation of a mobile network in realistic communication environments. They use a...
Provided by University of New Mexico
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White Papers
A Density Based Clustering Algorithm for Efficient Channel Allocation in Multi-Radio Multi-Channel Wireless Mesh Networks
Aug 2011
Efficient channel selection is essential in 802.11 mesh deployments, for minimizing contention and interference among co-channel devices. The IEEE 802.11 standard provides at least three...
Provided by IARIA
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White Papers
Performance Analysis of Pilot Aided OFDMA Systems for Mesh Networks
Aug 2011
This paper presents a systematic approach for analyzing the bit error probability of pilot aided Orthogonal Frequency-Division Multiple Access (OFDMA) systems. A comparative analysis with the...
Provided by IARIA
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White Papers
A MAC Throughput Over Rayleigh Fading Channel in the 802.11a/g/n-Based Mobile LAN
Aug 2011
This paper explores a MAC (Medium Access Control) layer throughput with DCF (Distributed Coordination Function) protocol in the IEEE 802.11a/g/n-based mobile LAN. It is evaluated in Rayleigh...
Provided by IARIA
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White Papers
Performance Evaluation of Handover Policies in Mobile Heterogenous Networks
Aug 2011
The increasingly ubiquitous deployment of wireless networks together with efforts to complete the standardization of Media Independent Handover (MIH) will support the 4G (Fourth Generation) vision...
Provided by IARIA
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White Papers
Design and Implementation of a Cooperative Protocol for Extending Coverage in Wireless Mesh Networks
Aug 2011
Wireless Mesh Networks (WMNs) have attracted great attention in the last few years because of their advantages over traditional wireless networks. WMNs can be seen as a mixture of ad hoc and...
Provided by IARIA
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White Papers
TenDoc: Network Coding-Based Software for Wireless Ad Hoc Networks
Aug 2011
This paper builds upon previous studies that highlight the benefits of Network Coding for all too all traffic patterns. This is the case within the framework of an Optimized Link State Routing...
Provided by IARIA
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White Papers
Connecting the Unconnected
Aug 2011
Many new cell phones on the market come with 802.11 enabled, along with standard Bluetooth functionality. A large percentage of working class people in South Africa typically cannot afford 802.11...
Provided by IARIA
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White Papers
Performance Analysis of Time Synchronization Protocols in Wireless Sensor Networks With Regular Topologies
Sep 2010
Time synchronization in wireless sensor networks is an essential issue in their operation. The synchronization is deeply influenced by network size and complexity. System dynamics and algebraic...
Provided by IARIA
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White Papers
Distributed GIS Approach for Flood Risk Assessment
Jun 2010
Web-based Geographic Information Systems (WbGIS) provides key decision support capabilities for the disaster and emergency management community. Perspective visualization and simultaneous access...
Provided by IARIA
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White Papers
Self-Organization Supported Algorithms for Wireless Sensor Networks
Jun 2010
Self-organization is an important issue in wireless sensor networks because of the inherent unreliability of the network. Besides, variable threats in the networks can not be ignored. Extending...
Provided by IARIA
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White Papers
Meta-Design With Safe and Secure Embedded System Networking
Jun 2010
The paper presents several validated principles of a meta-design support for end-user development of safe and secure embedded system networking. The devised approach offers a reusable framework...
Provided by IARIA
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White Papers
Security and Authentication Architecture Using MPEG-21 for Wireless Patient Monitoring Systems
Jun 2010
Privacy and security are two major concerns in the ubiquitous deployment of wireless patient monitoring systems, where wireless sensor networks become an integral part of the monitoring process....
Provided by IARIA
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White Papers
A Secure P2P Incentive Mechanism for Mobile Devices
Jun 2010
Peer-to-Peer applications are emerging into mobile devices. However, resource limitations of these devices introduce new challenges for P2P technologies. For instance, there is a need for...
Provided by IARIA
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White Papers
Performance of Random Routing on Grid-Based Sensor Networks
Jan 2009
Random routing protocols in sensor networks forward packets to randomly selected neighbors. These packets are agents carrying information about events, or queries seeking such information. The...
Provided by Colorado State University
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White Papers
A Peer-to-Peer Collaboration Framework for Multi-Sensor Data Fusion
Feb 2008
A peer-to-peer collaboration framework for multi-sensor data fusion in resource-rich radar networks is presented. In the multi-sensor data fusion, data needs to be combined in such a manner that...
Provided by Colorado State University
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White Papers
A Measurement-Based Modeling Approach for Network-Induced Packet Delay
Nov 2007
An approach is presented to capture and model Internet end-to-end packet delay behavior using ARMA and ARIMA models. Auto-Correlation (ACF) and Partial Auto-Correlation (PACF) Functions are used...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Performance Degradation of IEEE 802.15.4 Slotted CSMA/CA Due to Hidden Nodes
Nov 2007
As sensor nodes are subject to strict power limitations and often deployed in harsh environments, there is significant potential for a node to be hidden from another node. The impact of hidden...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Cognitive Adaptation for Teams in ADROIT
Aug 2007
The authors have created a sensor-sharing protocol that uses cognition to increase performance by choosing protocol parameters based on the current environment and the past relationships between...
Provided by Raytheon BBN Technologies
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White Papers
Access Methods for Markovian Streams
Oct 2008
Model-based views have recently been proposed as an effective method for querying noisy sensor data. Commonly used models from the AI literature (e.g., the hidden Markov model) expose to...
Provided by University of Washington
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White Papers
On Improving the Representation of a Region Achieved by a Sensor Network
Mar 2010
This paper considers the class of applications of sensor networks in which each sensor node makes measurements, such as temperature or humidity, at the precise location of the node. Such...
Provided by Drexel University
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White Papers
Declarative Support for Sensor Data Cleaning
Jan 2011
Pervasive applications rely on data captured from the physical world through sensor devices. Data provided by these devices, however, tend to be unreliable. The data must, therefore, be cleaned...
Provided by Stanford University
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Webcasts
What 2011 Holds in Store for Your IT Governance, Risk and Compliance (IT GRC) Program - 5 Predictions
May 2011
Planning a compliance program in 2011? In this 30-minute webcast, Chris Noell, EVP of Product Management at TruArx, will make five predictions on what regulations will have the most impact in 2011...
Provided by ANXeBusiness Corp
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Webcasts
Top Requirements for Successfully Automating SOX Quarterly Self-Assessments
May 2010
For many organizations, Sarbanes-Oxley compliance is mandatory, but automation of the self-assessment process can make it less painful. There are many advantages to using an IT GRC tool to...
Provided by ANXeBusiness Corp
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White Papers
A Comprehensive Analysis of Bandwidth Request Mechanisms in IEEE 802.16 Networks
May 2010
The IEEE 802.16 standard is considered to be one of the most promising technologies. Bandwidth reservation is employed to provide Quality of Service (QoS)-guaranteeing services. A request/grant...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Medium Access Control Scheme for Wireless LANs With Constant-Time Contention
Aug 2010
In today's wireless networks, stations using the IEEE 802.11 Standard contend for the channel using the Distributed Coordination Function (DCF). Research has shown that DCF's performance degrades...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
High Level Synthesis for Packet Processing Pipelines
Oct 2007
Packet processing is an essential function of state-of-the-art network routers and switches. Implementing packet processors in pipelined architectures is a well-known, established technique,...
Provided by Columbia University
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White Papers
Synthesis and Optimization of Pipelined Packet Processors
Feb 2009
The authors consider pipelined architectures of packet processors consisting of a sequence of simple packet-processing modules interconnected by first-in first-out buffers. They propose a new...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Optimizing Sequential Cycles Through Shannon Decomposition and Retiming
Jan 2011
Optimizing sequential cycles is essential for many types of high-performance circuits, such as pipelines for packet processing. Retiming is a powerful technique for speeding pipelines, but it is...
Provided by Columbia University
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White Papers
Hybrid, Optical and Wireless Near-Gigabit Communications System
Nov 2009
This paper presents the study and the realization of a hybrid 60 GHz wireless communications system. As the 60 GHz radio link operates only in a single-room configuration, an additional Radio over...
Provided by Université de Nantes
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White Papers
Toward a Gigabit Wireless Communications System
Aug 2009
This paper presented the design and the implementation of a 60 GHz communication system for WPAN applications in point-to-point or point-to-multipoint configurations. The proposed system provides...
Provided by CNRS
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White Papers
Power and Transmission Duration Control for Un-Slotted Cognitive Radio Networks
Nov 2009
The authors consider an unslotted primary channel with alternating on/off activity and provide a solution to the problem of finding the optimal secondary transmission power and duration given some...
Provided by Nile University
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White Papers
Management of Location Based Advertisement Services Using Spatial Triggers
Nov 2009
This paper discusses the advent of new technologies which have emerged under the area of Location Based Services (LBS). An innovative implementation and approach has been presented for design of...
Provided by COMSATS Institute of Information Technology
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White Papers
Multiple Description Coding of Discrete Ergodic Sources
Nov 2009
The authors investigate the problem of Multiple Description (MD) coding of discrete ergodic processes. They introduce the notion of MD stationary coding, and characterize its relationship to the...
Provided by Stanford University
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White Papers
GSM Security Using Identity-Based Cryptography
Nov 2009
Current security model in Global System for Mobile Communications (GSM) predominantly use symmetric key cryptography. The rapid advancement of Internet technology facilitates online trading,...
Provided by DA-IICT
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White Papers
The Capacity Region of a Product of Two Unmatched Gaussian Broadcast Channels With Three Particular Messages and a Common Message
Nov 2009
This paper considers a Gaussian broadcast channel with two unmatched degraded components, three particular messages, and a common message that is intended for all three receivers. It is shown that...
Provided by McMaster University
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White Papers
Radio Transmission Performance of EPCglobal Gen-2 RFID System
Nov 2009
RFID (Radio Frequency IDentification) is a technology where the reader accesses automatically the data stored on the tag, label, or card, which has built in a micro-chip. EPCglobal Class-1...
Provided by Inha University
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White Papers
A Trust-Based Cross-Layer Security Protocol for Mobile Ad Hoc Networks
Nov 2009
In this paper, the authors develop a trust based security protocol based on a cross-layer approach which attains confidentiality and authentication of packets in both routing and link layers of...
Provided by Anna University
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White Papers
Energy Efficient Security Architecture for Wireless Bio-Medical Sensor Networks
Oct 2009
Latest developments in VLSI, wireless communications, and biomedical sensing devices allow very small, lightweight, low power, intelligent sensing devices called biosensors. A set of these devices...
Provided by JNTU College of Engineering
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White Papers
A Middleware for Service-Oriented Communication in Mobile Disaster Response Environments
Dec 2008
Today, the paper of disaster response teams is being increasingly supported and coordinated by using portable computing devices. Connected to mobile ad-hoc networks, these devices establish a...
Provided by Association for Computing Machinery
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White Papers
Mobile Device Location Information Acquisition Framework for Development of Location Information Web Applications
Mar 2009
Mobile device location information based services are one of the key drivers in telecommunication market today. The current development of mobile device location based service solutions is...
Provided by Vienna University of Technology
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White Papers
Resource Disconnection Management in MANET Driven by Process Time Plan
Sep 2007
The use of mobile ad hoc networks (manets) and of adaptive process management systems, able to enact cooperative processes among the on-the-field operators and to cope with disconnection...
Provided by Vienna University of Technology
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White Papers
Testbeds for Emulating Dependability Issues of Mobile Web Services
Jul 2010
Today's ubiquitous internet access has opened new opportunities for mobile workers. By using portable devices, the workers are not only able to access their company's data and/or services from...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Crowdsourcing Mobile Workflows With Tweetflows
Mar 2011
The use of mobile devices and Applications (Apps) offer users ubiquitous access to arbitrary Services. In this paper, the authors study the applicability of established SOA concepts in mobile...
Provided by Vienna University of Technology
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White Papers
Mitigating Routing Vulnerabilities in Ad Hoc Networks Using Reputations
Sep 2009
Nodes in mobile ad hoc networks have limited transmission ranges that necessitate multihop communication. Hence the nodes expect their neighbours to relay the packets meant for nodes out of the...
Provided by Inderscience Enterprises
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White Papers
Mobile Phone Based Drunk Driving Detection
Feb 2010
Drunk driving, or officially Driving Under the Influence (DUI) of alcohol, is a major cause of traffic accidents throughout the world. In this paper, the authors propose a highly efficient system...
Provided by Southeast University
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White Papers
Pattern Mutation in Wireless Sensor Deployment
Jul 2009
In this paper, the authors study the optimal deployment pattern problem in Wireless Sensor Networks (WSNs). They propose a new set of patterns, particularly when sensors' communication range (rc)...
Provided by The Ohio State University
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White Papers
Network Decoupling: A Methodology for Secure Communications in Wireless Sensor Networks
Dec 2007
Many Wireless Sensor Network (WSN) applications demand secure communications. The Random Key Predistribution (RKP) protocol has been well accepted in achieving secure communications in WSNs. A...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Localization-Based Anti-Sensor Network System
Oct 2008
In this paper, an anti-sensor network system is proposed, aiming to protect an important area from being under surveillance by an adversary's sensor nodes. The major components of the system are a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Mobility Limited Flip-Based Sensor Networks Deployment
Jan 2011
An important phase of sensor networks operation is deployment of sensors in the field of interest. Critical goals during sensor networks deployment include coverage, connectivity, load balancing...
Provided by Shanghai Jiao Tong University
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White Papers
Non-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks
Jul 2007
Recently there has been an influx of work on extending a wireless sensor network's lifetime via distributed source compression and a deployment of non-homogeneous nodes to handle the aggregation....
Provided by UC Regents
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White Papers
Good Neighbor: Ad-Hoc Authentication of Nearby Wireless Devices by Multiple Antenna Diversity
Feb 2010
As wireless devices proliferate, in many situations the authors wish to authenticate devices by mere proximity. This is the common authentication mechanism for wired devices where they plug them...
Provided by UC Regents
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White Papers
Capacity Enhancement and Reliability of Wireless Mesh Networks
Oct 2010
Wireless Mesh Networks (WMNs) have gained considerable interest in expanding IEEE 802.11 networks to large-scale enterprise and community scenarios, primarily because its capability of providing...
Provided by UC Regents
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White Papers
Efficient and Effective Similarity Search Over Probabilistic Data Based on Earth Mover's Distance Jia Xu1
Aug 2010
Probabilistic data is coming as a new deluge along with the technical advances on geographical tracking, multimedia processing, sensor network and RFID. While similarity search is an important...
Provided by VLDB Endowment
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White Papers
CodePlay: Live Multimedia Streaming in VANETs Using Symbol-Level Network Coding
Aug 2010
Live Multimedia Streaming (LMS) services are important in Vehicular Ad hoc NETworks (VANETs) for their capability of providing comprehensive and user-friendly information. The fundamental...
Provided by Worcester Polytechnic Institute
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White Papers
R-Code: Network Coding-Based Reliable Broadcast in Wireless Mesh Networks
Sep 2010
Broadcast is an important communication primitive in Wireless Mesh Networks (WMNs). Applications like network-wide software updates require reliable broadcast to ensure that every node in the...
Provided by Reed Elsevier
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White Papers
OppCast: Opportunistic Broadcast of Warning Messages in VANETs With Unreliable Links
Aug 2009
Multi-hop broadcast is a key technique to disseminate important information such as time-sensitive safety Warning Messages (WMs) in Vehicular Ad hoc NETworks (VANETs). Due to the fact that the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Lessons Learned From the Deployment of a Smartphone-Based Access-Control System
Jul 2007
Grey is a smartphone-based system by which a user can exercise her authority to gain access to rooms in the university building, and by which she can delegate that authority to other users. The...
Provided by Carnegie Mellon University
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White Papers
Anchor Selection and Topology Preserving Maps in WSNs - A Directional Virtual Coordinate Based Approach
Oct 2011
Virtual Coordinate Systems (VCS) characterize each node in a network by its hop distances to a subset of nodes called anchors. Performance of VCS based algorithms is highly sensitive to number of...
Provided by Colorado State University
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White Papers
Geo-Logical Routing in Wireless Sensor Networks
Jun 2011
Geo-Logical Routing (GLR) is a novel technique that combines the advantages of geographic and logical routing to achieve higher routability at a lower cost. It uses topology domain coordinates,...
Provided by Colorado State University
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White Papers
Extracting Baseline Patterns in Internet Traffic Using Robust Principal Components
Aug 2011
Robust Base-Line (RBL) is a formal technique for extracting the baseline of network traffic to capture the underlying traffic trend. A range of applications such as anomaly detection and load...
Provided by Colorado State University
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White Papers
Dimension Reduction of Virtual Coordinate Systems in Wireless Sensor Networks
Jun 2011
Virtual Coordinate System (VCS) based routing schemes for sensor networks characterize each node by a coordinate vector of size M, consisting of distances to each of a set of M anchors. Higher the...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Modeling Spatial and Temporal Behavior of Internet Traffic Anomalies
Sep 2010
A new approach based on graph wavelets for analyzing the spatial and temporal behavior of Internet traffic anomalies is presented. This approach is applied to Internet2 traffic measurements to...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
SoS-Based Blind Channel Estimation in Multiuser Space-Time Block Coded Systems
Sep 2007
In this paper the problem of blind channel estimation in multiuser Space-Time Block Coded (STBC) systems is considered. Specifically, a new blind channel estimation technique is proposed. The...
Provided by EURASIP
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White Papers
ViMo (Virtualization for Mobile) : A Virtual Machine Monitor Supporting Full Virtualization for ARM Mobile Systems
Jul 2011
This paper proposes ViMo that is a micro virtual machine monitor for ARM mobile systems, which enables to run multiple OSes on single mobile system at the same time. ViMo does not require any...
Provided by IARIA
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White Papers
Cloud Computing for Online Visualization of GIS Applications in Ubiquitous City
Jul 2011
Cloud computing can be used to generate the 3D noise maps in ubiquitous cities. Here in this paper, the authors present their cloud computing approach, its performance and a performance comparison...
Provided by IARIA
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White Papers
Reducing the Human Cost of Grid Computing With GlideinWMS
Sep 2011
The switch from dedicated, tightly controlled compute clusters to a widely distributed, shared Grid infrastructure has introduced significant operational overheads. If not properly managed, this...
Provided by IARIA
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White Papers
Dual-Lag Correlation-Based Feature Detection of OFDM Signals With Cyclic Phase Compensation
Apr 2012
This paper presents cyclostationarity-based spectrum sensing algorithm implementation for detection of OFDM signals. The detector utilizes two distinct auto-correlation delays and introduces...
Provided by IARIA
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White Papers
NC-OFDM Cognitive Radio Optimal Pilot Placement for the LS Estimator
Apr 2012
A theoretical contradiction between the areas of the optimal pilot-pattern design and the optimal power loading algorithms has been found to exist for proposed Non-Contiguous Orthogonal...
Provided by IARIA
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White Papers
Cooperative Jam Technique to Increase Physical-Layer Security in CWSN
Apr 2012
This paper considers the problem of secure communication in Wireless Sensor Networks in the presence of non-colluding passive eavesdroppers. Cognitive networks capabilities such as spectrum...
Provided by IARIA
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White Papers
Joint Optimal Spectrum Sensing Time and Power Allocation in Ultra Wideband Cognitive Radio Networks
Apr 2012
Ultra WideBand (UWB) system is overlapped with various wireless systems, such as WLAN, WiMax and UMTS, which limits the use of UWB. Cognitive Radio (CR) enables UWB systems to efficiently use the...
Provided by IARIA
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White Papers
CRN Survey and a Simple Sequential MAC Protocol for CRN Learning
Apr 2012
With the idea to use the spectrum band efficiently, much of the research is being published in the field of cognitive radio network to share the licensed spectrum band with unlicensed users when...
Provided by IARIA
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White Papers
Cognitive Wireless Sensor Networks Framework for Green Communications Design
Apr 2012
Cognitive Wireless Sensor Networks is an emerging technology with great potential to avoid traditional wireless problems such as reliability, interferences and spectrum scarcity. Because of the...
Provided by IARIA
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White Papers
Testbed for Cognitive Radio Networks Based on USRP2/N200 Modules
Apr 2012
This paper deals with description of software defined radio test-bed based on USRP2/N200 modules available from ETTUS research. The aim of this test-bed is to develop and test the algorithms for...
Provided by IARIA
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White Papers
Smart Noise - Linearity Breakdown in Homodyne Multi-Standard Radio Receivers
Apr 2012
This paper analyzes the noise - linearity breakdown in direct conversion multi-standard radio receivers embedding analog signal conditioning. The paper's main goal is to develop a systematic noise...
Provided by IARIA
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White Papers
Optimal Algorithm for Cognitive Spectrum Decision Making
Apr 2012
In this paper, an optimal algorithm of spectrum decision making is presented for a real cognitive radio network with tree-based topology. All nodes of a subnet in such network have the capability...
Provided by IARIA
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White Papers
Learning-Based Spectrum Sensing in OFDM Cognitive Radios
Apr 2012
In this paper, spectrum sensing in OFDM-based cognitive radio systems is modeled as a pattern recognition problem. The proposed scheme uses a linear classifier to decide on when the spectrum is...
Provided by IARIA
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White Papers
Developing Cognitive Strategies for Reducing Energy Consumption in Wireless Sensor Networks
Apr 2012
Due to Information and Communication Technologies, wireless data traffic is growing with a rate higher than 25% annually. Wireless Sensor Networks (WSNs) represent nowadays one of the most rapidly...
Provided by IARIA
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White Papers
IPSAG Cognitive Radio Routing Protocol: Models and Performance
Jul 2011
The paper is about performance evaluation of the IP Spectrum Aware Geographic routing protocol (IPSAG). IPSAG is an opportunistic cognitive routing protocol, which determines a source-destination...
Provided by IARIA
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White Papers
Improving Spectrum Sensing Performance by Using Eigenvectors
Jul 2011
In this paper, the authors present a method to improve the performance of eigenvalue-based detection, facilitated with eigenvectors of the sample covariance matrix. They focus on the multi-sensor...
Provided by IARIA
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White Papers
Impact of Control Channel Design on Cooperative Spectrum Sensing in Opportunistic Spectrum Access Networks
Jul 2011
In Opportunistic Spectrum Access (OSA) networks, Secondary unlicensed Users (SUs) need a common Control Channel (CC) to identify the spectrum opportunities, i.e., common spectrum holes unused by...
Provided by IARIA
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White Papers
Broadcast Signaling for a Centralized Cognitive Radio Network With Distributed Control
Jul 2011
For signaling and controlling a centralized Cognitive Radio Network (CRN) with users operating in different sets of channels, a dedicated common control channel is not a useful approach. Different...
Provided by IARIA
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White Papers
Optimal Pilot Placement in Cognitive Radio Systems for Wiener Filtered MMSE Channel Estimation
Jul 2011
Non-Contiguous Orthogonal Frequency Division Multiplexing (NC-OFDM) Cognitive Radios (CRs) pose an intriguing situation for optimal pilot-pattern generation. It has been proposed that in order to...
Provided by IARIA
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White Papers
Cyclostationarity Detection of DVB-T Signal: Testbed and Measurement
Jul 2011
In this paper, realistic performance of Digital Video Broadcasting - Terrestrial (DVB-T) spectrum sensing are investigated for cognitive radio applications. To this end, an implementation of a...
Provided by IARIA
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White Papers
Efficient Mid-End Spectrum Sensing Implementation for Cognitive Radio Applications Based on USRP2 Devices
Jul 2011
Spectrum sensing is a cornerstone task in cognitive radio environments supporting dynamic spectrum access by spectrum opportunities discovery. It must be reliable and accurate in order not to harm...
Provided by IARIA
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White Papers
Strict Priority Scheduler for Rate Controlled Transmission
Feb 2012
The paper proposes a modification to the strict priority scheduler, to guarantee the Quality of Service (QoS) of a network with variable and undetermined bandwidth capacity. The proposed...
Provided by IARIA
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White Papers
The Space-Time Information in the Access Management
Feb 2012
This paper deals with the possibility to employ the user's time and space position information in the access management. Using the time and space information as new factors for authentication...
Provided by IARIA
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White Papers
A New Approach to NGN Evaluation Integrating Simulation and Testbed Methodology
Feb 2012
Since, the beginning of Internet, network researchers have been proposing methodologies and tools to facilitate the design and development of new protocols for Internet. Analytical modeling,...
Provided by IARIA
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White Papers
Impact of Propagation Factors on Routing Efficiency in Wireless Mesh Networks: A Simulation-Based Study
Feb 2012
The low installation and maintenance costs, self-healing abilities and the ease of development are some of the qualities that make the multi-hop wireless mesh network a promising alternative to...
Provided by IARIA
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White Papers
Wireless Home Automation Network Stability Testing
Feb 2012
This paper describes stability testing of the new wireless communication platform for home automation. In the paper is description of two test-cases for wireless communication parameters...
Provided by IARIA
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White Papers
Towards Opportunistic Data Dissemination in Mobile Phone Sensor Networks
Feb 2012
Recently, there has been a growing interest within the research community in developing opportunistic routing protocols. Many schemes have been proposed; however, they differ greatly in...
Provided by IARIA
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White Papers
Selective Link Cost Alteration in Reservation-Based Multi-Hop Wireless Mesh Networks
Feb 2012
Link state protocol-driven wireless mesh networks are known for their flexible and highly scalable structure, due to a high degree of individuality, in terms of routing table generation in each...
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White Papers
Reliable Technology for Wireless Mesh Networks With Low System Requirements
Feb 2012
In this paper IQMESH, new networking technology for wireless mesh networks, its basic principles and related routing algorithms are presented. The presented technology was developed especially for...
Provided by IARIA
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White Papers
Forwarding and Routing Stateless Multi-Hop Protocol for Wireless Sensor Networks
Feb 2012
Energy conservation can be achieved by the use of clustering routing protocols in Wireless Sensor Networks (WSN). The people have a great impact on the system lifetime. In these WSNs, the concepts...
Provided by IARIA
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White Papers
Resource Management for Advanced, Heterogeneous Sensor-Actor-Networks
Feb 2012
Sensor-Actor-NETworks (SANET) consist of several heterogeneous subsystems, which provide specific capabilities for measuring or manipulating its environment. During the run-time, the communication...
Provided by IARIA
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White Papers
Improving Fairness in Wireless Mesh Networks
Feb 2012
Wireless Mesh Networks (WMNs) are networks that aim to establish hybrid wireless communications in areas with little or no telecommunication infrastructure available. The main motivation of these...
Provided by IARIA
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White Papers
MANET With the Q-Routing Protocol
Feb 2012
With ad hoc networks having much more advantages over other types of networks in a mobile world, this made it an attractive field for many protocols. In this paper, the authors propose an...
Provided by IARIA
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White Papers
Estimation of Collision Multiplicities in IEEE 802.11-Based WLANs
Feb 2012
Estimating the Collision Multiplicity (CM), i.e. the number of users involved in a collision, is a key task in MultiPacket Reception (MPR) approaches and in Collision Resolution (CR) techniques. A...
Provided by IARIA
