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mobile - wireless communications
(59065 results)-
White Papers
Network Virtualization and Programmability
Dec 2010
The authors present network virtualization (building virtual or logical networks over a physical infrastructure) and network programmability (allowing the network operator to at least control the...
Provided by Ghent University
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White Papers
Temporal Correlation of the Interference in Mobile Random Networks
Jan 2011
In wireless networks, network performance measured by, e.g., link outage, is mainly limited by interference. The characterization of the interference depends on the transmitters set, the fading...
Provided by University of Notre Dame
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White Papers
On the Optimal Block Length for Joint Channel and Network Coding
Aug 2011
Channel coding alone is not sufficient to reliably transmit a message of finite length from a source to one or more destinations. To ensure that no data is lost, channel coding on the physical...
Provided by University of Notre Dame
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White Papers
Cognitive Network Interference - Modeling and Applications
Apr 2011
Opportunistic spectrum access creates the opening of under-utilized portions of the licensed spectrum for reuse, provided that the transmissions of secondary radios do not cause harmful...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Cooperative Spectrum Sharing for a Primary Network With Capacity Constraint
Feb 2011
In this paper, the authors propose a cooperative framework for spectrum sharing between a secondary random ad hoc network and a primary network with capacity constraint. While the interference...
Provided by Auburn University
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White Papers
A Decentralized MAC for Opportunistic Spectrum Access in Cognitive Wireless Networks
Sep 2010
Cognitive MAC protocols are designed to efficiently utilize the spectral resources without affecting the performance characteristics of the primary users. The use of spectrum opportunities, so...
Provided by Association for Computing Machinery
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White Papers
Outage Probability Based Comparison of Underlay and Overlay Spectrum Sharing Techniques
Jul 2009
Three spectrum sharing schemes - spreading-based underlay, Interference Avoidance (IA) based overlay and spreading-based underlay that implements IA, are compared in this paper. The comparison is...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
HMM-Based Adaptive Frequency-Hopping Cognitive Radio System to Reduce Interference Time and to Improve Throughput
Aug 2010
Cognitive Radio is an advanced enabling technology for the efficient utilization of vacant spectrum due to its ability to sense the spectrum environment. It is important to determine accurate...
Provided by Inha University
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White Papers
Interference Modeling for Cognitive Radio Networks With Power or Contention Control
Feb 2010
In this paper, the authors present an interference model for Cognitive Radio (CR) networks employing power control or contention control scheme. The Probability Density Functions (PDFs) of the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Energy Efficiency Analysis of MISO-OFDM Communication Systems Considering Power and Capacity Constraints
Feb 2011
In this paper, the energy efficiency of Multi-Input Single-Output and Orthogonal Frequency Division Multiplexing (MISO-OFDM) communication systems with power and capacity constraints is...
Provided by Springer Science+Business Media
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White Papers
A Study of MIMO Gaussian Channels Based on Synergetics
Aug 2010
By interpolating between information theory and synergetics, the authors provide a bridge to connect the two kinds of subjects. As an application, the capacity formula of multiple-input...
Provided by Springer Science+Business Media
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White Papers
Capacity Analysis of a Multi-Cell Multi-Antenna Cooperative Cellular Network With Co-Channel Interference
Oct 2011
Characterization and modeling of co-channel interference is critical for the design and performance evaluation of realistic multi-cell cellular networks. In this paper, based on alpha stable...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Channel Modeling of Information Transmission Over Cognitive Interrogator-Sensor Networks
Jan 2011
This paper looks into the modeling of information transmission over Cognitive Interrogator-Sensor Networks (CISNs), which represent a novel and important class of sensor networks deployed for...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On Space - Frequency Correlation of UWB MIMO Channels
Nov 2010
Conventional Multiple-Input-Multiple-Output (MIMO) channel correlation models focus on describing the complex amplitude correlation of resolvable Multi-Path Components (MPCs). It has recently been...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Computationally Tractable Model of Energy Detection Performance Over Slow Fading Channels
Oct 2010
Energy Detection (ED) has been widely used for detecting unknown deterministic signals in many wireless communication applications, e.g., cognitive radio, and Ultra-WideBand (UWB). However, the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed Explicit Rate Schemes in Multi-Input-Multi-Output Network Systems
Jun 2010
With the ever-increasing wireless/wired data applications recently, considerable efforts have focused on the design of distributed explicit rate flow control schemes for multi-input-multi-output...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
AFSO: An Adaptative Frame Size Optimization Mechanism for 802.11 Networks
Jun 2010
In this paper, the authors analyze the impact of different frame types on self-similarity and burstiness characteristics of the aggregated frame traffic from a real 802.11 wireless local area...
Provided by Huazhong University of Science & Technology
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White Papers
A Novel Self-Tuning Feedback Controller for Active Queue Management Supporting TCP Flows
Dec 2009
Wireless access points act as bridges between wireless and wired networks. Since the actually available bandwidth in wireless networks is much smaller than that in wired networks, there is a...
Provided by Reed Elsevier
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White Papers
Characteristics Analysis and Modeling of Frame Traffic in 802.11 Wireless Networks
Sep 2009
In this paper, the authors analyze the impacts of different frame types on the self-similarity and burstiness characteristics of the aggregated frame traffic in a real 802.11 Wireless Local Area...
Provided by John Wiley & Sons
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White Papers
Vehicle-to-Vehicle Channel Modeling and Measurements: Recent Advances and Future Challenges
Nov 2009
Vehicle-to-vehicle communications have recently received much attention due to some new applications, such as wireless mobile ad hoc networks, relay-based cellular networks, and intelligent...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Adaptive Geometry-Based Stochastic Model for Non-Isotropic MIMO Mobile-to-Mobile Channels
Nov 2009
In this paper, a generic and adaptive Geometry-Based Stochastic Model (GBSM) is proposed for non-isotropic Multiple-Input Multiple-Output (MIMO) Mobile-To-Mobile (M2M) Ricean fading channels. The...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Call Admission Control Algorithms in OFDM-Based Wireless Multiservice Networks
Jun 2008
Orthogonal Frequency Division Multiplexing(OFDM)is becoming a fundamental technology in future generation wireless communications. Call admission control is an effective mechanism to guarantee...
Provided by Springer Science+Business Media
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White Papers
Two New Sum-of-Sinusoids-Based Methods for the Efficient Generation of Multiple Uncorrelated Rayleigh Fading Waveforms
Sep 2009
This paper deals with the design of a set of multiple uncorrelated Rayleigh fading waveforms. The Rayleigh fading waveforms are mutually uncorrelated, but each waveform is correlated in time. The...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On Analytical Derivations of the Condition Number Distributions of Dual Non-Central Wishart Matrices
Mar 2009
In this paper, the authors explore the statistical characterization of Multiple-Input Multiple-Output (MIMO) channel correlation matrices with the main focus being on their condition number...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Secrecy Analysis in Protocol Composition Logic
Nov 2007
The authors present formal proof rules for inductive reasoning about the way that data transmitted on the network remains secret from a malicious attacker. Extending a compositional protocol logic...
Provided by Stanford University
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White Papers
Physical Layer Security in Broadcast Networks
Apr 2009
This paper reviews the information theoretic characterization of security in broad-cast channels, in which a transmitter has both public and confidential messages in-tended for multiple receivers....
Provided by University of Hawaii
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White Papers
The Evolution of Cellular Backhaul Technologies: Current Issues and Future Trends
Jun 2010
The rapid increase of the number of mobile subscribers as well as the deployment of 3G technologies are putting strain on mobile backhaul OPerational EXpenditures (OPEX) which amount to 20-40% of...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
The Spatial Effect of Mobility on the Mean Number of Handoffs: A New Theoretical Result
Jun 2010
The mean number of hand-offs is a fundamental performance measure in any mobile system, as it directly relates to the signaling load in the network as well as to the delivered QoS. As the mobile...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Power Optimization for Connectivity Problems
Jan 2011
Given a graph with costs on the edges, the power of a node is the maximum cost of an edge leaving it, and the power of the graph is the sum of the powers of the nodes of this graph. Motivated by...
Provided by Rutgers University
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White Papers
Medium Access in WiFi Networks: Strategies of Selfish Nodes
Apr 2010
The majority of Wireless Local Area Network (WLAN) technologies, including the Wireless Fidelity (WiFi) standard IEEE 802.11, is characterized by the use of a single shared channel. The use of a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Routing in Quasi-Deterministic Intermittently Connected Networks
Oct 2009
Some of the recent applications using wireless communications (wildlife monitoring, inter-vehicles communication, battlefield communication,...) are characterized by challenging network scenarios....
Provided by INRIA
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White Papers
Providing Effective Security in Mobile Ad Hoc Networks Without Affecting Bandwidth or Interoperability
Sep 2008
Finding security solutions for Mobile Ad hoc NETworks (MANETs) that do not detrimentally affect their utility is a challenging research problem. The authors present mechanisms that can be used for...
Provided by University of Ontario Institute of Technology
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White Papers
Connecting Low-Power and Lossy Networks to the Internet
Apr 2011
Many applications, ranging from wireless healthcare to energy metering on the smart grid, have emerged from a decade of research in wireless sensor networks. However, the lack of an IP-based...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Bezel Swipe: Conflict-Free Scrolling and Multiple Selection on Mobile Touch Screen Devices
Apr 2009
Zooming user interfaces are increasingly popular on mobile devices with touch screens. Swiping and pinching finger gestures anywhere on the screen manipulate the displayed portion of a page, and...
Provided by FX Palo Alto Laboratory
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White Papers
Towards Automated Verification of Autonomous Networks: A Case Study in Self-Configuration
Jan 2010
In autonomic networks, the self-configuration of network entities is one of the most desirable properties. In this paper, the authors show how formal verification techniques can verify the...
Provided by Imperial College London
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Whitepapers
System x Performance Benchmarks
Jan 2012
Learn about IBM System x performance benchmarks.
Provided by IBM
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Whitepapers
HEROLD powers its rapidly growing information business With IBM BladeCenter HX5 and IBM System x3850 X5 servers hosted by IBM - A case study
Jan 2012
Founded in 1919, HEROLD Business Data has evolved from a print focused directory services company into a provider of multimedia search and location-based services. The company continues to grow...
Provided by IBM
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Whitepapers
Virtualize with confidence using MAX5!
Jan 2012
This brand-new white paper by Principled Technologies proved what we knew - that x3690 X5 and MAX5 are capable of hosting over 320 virtual machines. PT then went a step further and tested both...
Provided by IBM
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White Papers
Scalable Ubiquitous Data Access in Clustered Sensor Networks
Apr 2008
Wireless sensor networks have drawn much attention due to their ability to monitor ecosystems and wildlife habitats. In such systems, the data should be intelligently collected to avoid human...
Provided by University of Victoria
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White Papers
Privacy Preservation in the Publication of Trajectories
Feb 2008
The authors study the problem of protecting privacy in the publication of location sequences. Consider a database of trajectories, corresponding to movements of people, captured by their...
Provided by University of Hong Kong
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White Papers
The Utilization of Push Mail in China
May 2009
Push mail is popular to business users in the world. It has been two years since push mail was introduced into China. In order to find out the status of its development and utilization,...
Provided by Scientific Research Publishing
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White Papers
Incremental Network Programming for Wireless Sensors
Jul 2009
The authors present an incremental network programming mechanism which reprograms wireless sensors quickly by transmitting the incremental changes using the Rsync algorithm; they generate the...
Provided by Scientific Research Publishing
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White Papers
UWB-Based Localization in Wireless Sensor Networks
Aug 2009
Localization has many important applications in wireless sensor networks, such as object searching and tracking, remote navigation, location based routing etc. The distance measurements have been...
Provided by Scientific Research Publishing
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White Papers
Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks
Jul 2009
Employing multiple channels in wireless multi-hop networks is regarded as an effective approach to increasing network capacity. This paper presents a centralized quasi-static channel assignment...
Provided by Scientific Research Publishing
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White Papers
The Application of Optical CDMA-Based Fiber Radio Networks in Wireless Sensor Networks
Jul 2009
One fiber radio scheme using shifted prime codes for interference elimination is proposed for Optical Code-Division Multiple-Access (OCDMA) network. By taking advantage of the cyclic property of...
Provided by Scientific Research Publishing
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White Papers
An Improved Analytical Model for IEEE 802.11 Distributed Coordination Function Under Finite Load
Jun 2009
In this paper, an improved analytical model for IEEE 802.11 Distributed Coordination Function (DCF) under finite load is proposed by closely following the specifications given in IEEE 802.11...
Provided by Scientific Research Publishing
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White Papers
On Approaches to Congestion Control Over Wireless Networks
Jun 2009
Congestion control in wireless networks has been extensively investigated over the years and several schemes and techniques have been developed, all with the aim of improving performance in...
Provided by Scientific Research Publishing
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White Papers
Fractional Sampling Improves Performance of UMTS Code Acquisition
Jun 2009
An improved technique with a fractional sampling based on two samples per chip, according to the Nyquist criterion, has been employed by the authors to enhance the performance in the code...
Provided by Scientific Research Publishing
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White Papers
An Energy-Aware Clustering Approach for Wireless Sensor Networks
May 2009
Energy conservation is an essential and critical requirement for a wireless sensor network with battery operated nodes intended for long term operations. Prior work has described different...
Provided by Scientific Research Publishing
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White Papers
Research on ZigBee Wireless Sensors Network Based on ModBus Protocol
Apr 2009
Wireless ZigBee is a very low-cost, very low power consumption, two-way, wireless communications technology, which can be used widely in consumer electronics, home and building automation,...
Provided by Scientific Research Publishing
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White Papers
Subarea Tree Routing (STR) in Multi-Hop Wireless Ad Hoc Networks
Apr 2009
Subarea Tree Routing (STR), a new routing protocol for multi-hop wireless ad hoc networks, is proposed. The novelty of the STR protocol is to divide the whole network into many subareas...
Provided by Scientific Research Publishing
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White Papers
Five Basic Types of Insider DoS Attacks of Code Dissemination in Wireless Sensor Networks
Feb 2009
Code dissemination is one of the important services of Wireless Sensor Networks (WSNs). Securing the process of code dissemination is essential in some certain WSNs applications, state-of-the-art...
Provided by Scientific Research Publishing
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White Papers
Generality Challenges and Approaches in WSNs
Feb 2009
Ignoring the generality in the design of Wireless Sensor Networks (WSNs) applications limits their benefits. Furthermore, the possibilities of future extension and adaptation are also restricted....
Provided by Scientific Research Publishing
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White Papers
Parallel-Transmission: A New Usage of Multi-Radio Diversity in Wireless Mesh Network
Feb 2009
To fully utilize the diversity of multi-radio, a new parallel transmission method for wireless mesh network is proposed. Compared with conventional packet transmission which follows "One flow on...
Provided by Scientific Research Publishing
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White Papers
Gateways Placement in Backbone Wireless Mesh Networks
Feb 2009
This paper presents a novel algorithm for the gateway placement problem in Backbone Wireless Mesh Networks (BWMNs). Different from existing algorithms, the new algorithm incrementally identifies...
Provided by Scientific Research Publishing
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White Papers
A Priority Queuing Model for HCF Controlled Channel Access (HCCA) in Wireless LANs
Feb 2009
Recently, there has been a rapid growing interest in new applications requiring Quality of Service (QoS) guarantees through Wireless Local Area Networks (WLAN). These demands have led to the...
Provided by Scientific Research Publishing
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White Papers
Performance Study of a Cross-Layer Based Multipath Routing Protocol for IEEE 802.11e Mobile Ad Hoc Networks
Nov 2008
Communication over wireless links identifies significant challenges for routing protocols operating. This paper proposes a Cross-layer design based Multipath Routing Protocol (CMRP) for mobile ad...
Provided by Scientific Research Publishing
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White Papers
Improving Throughput in Wireless Local Area Networks
Nov 2008
The Medium Access Control (MAC) technique of standard WLANs, called the Distributed Coordination Function (DCF), is Carrier Sense Multiple Access based on Collision Avoidance (CSMA/CA) scheme with...
Provided by Scientific Research Publishing
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White Papers
Relations Among Mobility Metrics in Wireless Networks
Aug 2008
In wireless network simulation analysis, researchers tweak mobility metrics, such as the speed or the pause time of the nodes, to get different stability levels of the network. Meanwhile, in...
Provided by Scientific Research Publishing
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White Papers
On Energy-Efficient Node Deployment in Wireless Sensor Networks
Aug 2008
In wireless sensor networks, sensor nodes collect local data and transfer to the base station often relayed by other nodes. If deploying sensor nodes evenly, sensor nodes nearer to the base...
Provided by Scientific Research Publishing
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White Papers
Development of an intelligent VoWLAN Services for Patient Care Improvement
Aug 2008
Since the rapid exchange of information and collaboration with colleagues are indispensable for the quality of care. Effective communication between care givers has been recognized as a critical...
Provided by Scientific Research Publishing
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White Papers
A Novel Adaptive Hybrid Error Correction Scheme for Wireless DVB Services
May 2008
Real-time applications usually not only have a certain Packet Loss Ratio (PLR) requirement but also can have strict delay constraints. In the past, the authors proposed a Hybrid Error Correction...
Provided by Scientific Research Publishing
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White Papers
Streaming Multimedia Over Wireless Mesh Networks
May 2008
Wireless Mesh Network (WMN) research is an emerging field in network communications. However, WMNs pose several difficulties in the transmission of information, especially time critical...
Provided by Scientific Research Publishing
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White Papers
Beacon-Driven Leader Based Protocol Over a GE Channel for MAC Layer Multicast Error Control
May 2008
In wireless networks current standard MAC layer protocols don't provide any error correction scheme for broadcast/multicast. In this paper, the authors enhance a Leader Based Protocol (LBP) and...
Provided by Scientific Research Publishing
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White Papers
Analysis of Lifetime of Large Wireless Sensor Networks Based on Multiple Battery Levels
May 2008
Due to the limited transmission range, data sensed by each sensor has to be forwarded in a multi-hop fashion before being delivered to the sink. The sensors closer to the sink have to forward...
Provided by Scientific Research Publishing
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White Papers
Exploiting Geometric Advantages of Cooperative Communications for Energy Efficient Wireless Sensor Networks
Feb 2008
Energy efficiency and enhanced backbone capacity is obtained by exploiting the geometric orientation of cooperative nodes in wireless sensor network. The cooperative communication in Wireless...
Provided by Scientific Research Publishing
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White Papers
Adaptive Throughput Optimization in Downlink Wireless OFDM System
Feb 2008
This paper presents a scheduling scheme for packet transmission in OFDM wireless system with adaptive techniques. The concept of efficient transmission capacity is introduced to make scheduling...
Provided by Scientific Research Publishing
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White Papers
An Exploratory Study of Experimental Tools for Wireless Sensor Networks
Jul 2011
The objective of this contribution is to present expositive review content on currently available experimental tools/services/concepts used for most emerging field Wireless Sensor Network that has...
Provided by Scientific Research Publishing
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White Papers
A Review of Personal Communications Services
Apr 2009
PCS is an acronym for Personal Communications Service. PCS has two layers of meaning. At the low layer, from the technical perspective, PCS is a 2G mobile communication technology operating at the...
Provided by University of Leicester
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White Papers
Performance Modelling and Analysis of Connection Admission Control in OFDMA Based WiMAX System With MMPP Queuing
Jun 2011
This paper presents a problem of queuing theoretic performance modeling and analysis of Orthogonal Frequency Division Multiple Access (OFDMA) under broad-band wireless networks. The authors...
Provided by Hassan II University
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White Papers
Measurement-Based Connection Admission Control Methods for Real-Time Services in IEEE 802.16e
May 2009
In this paper, the authors present two simple-to-implement measurement-based admission control methods for real-time services in IEEE 802.16e networks. The first method simply utilizes the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Scheduling and CAC in IEEE 802.16 Fixed BWNs: A Comprehensive Survey and Taxonomy
May 2010
IEEE 802.16 technology has emerged as a competitive alternative to wireline broadband access solution. IEEE 802.16 can provide Quality of Service (QoS) guarantees for heterogeneous classes of...
Provided by EURECOM
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White Papers
Design of Cross-Layer QoS Scheme in WiMAX Networks
Aug 2011
The IEEE 802.16 working group developed the WMAN to achieve Broadband Wireless Access (BWA). IEEE 802.16 is a high-speed wireless network technology that can provide multimedia services and...
Provided by National Chi Nan University
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White Papers
An Integrated Call Admission Control and Uplink Packet Scheduling Mechanism for QoS Evaluation of IEEE 802.16 BWA Networks
Apr 2010
A mathematical model based on Markov Chain is developed for the more realistic analysis of QoS parameters for the performance evaluation of IEEE 802.16 Broadband Wireless Access (BWA) Networks....
Provided by Canadian Journal
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White Papers
Coding Perspectives for Collaborative Distributed Estimation Over Networks
Dec 2009
A collaborative distributed estimation problem over a communication constrained network is considered from an information theory perspective. It is shown that the distributed estimation problem is...
Provided by Drexel University
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White Papers
A Concatenated Network Coding Scheme for Multimedia Transmission
Nov 2007
The authors discuss a coding technique for transmitting temporally ordered and/or successive refinements encoded multimedia data (such as MPEG video) over a multi-cast network using recently...
Provided by Drexel University
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White Papers
Belief Propagation Distributed Estimation in Sensor Networks: An Optimized Energy Accuracy Tradeoff
Jan 2008
The estimation error performance of Gaussian belief propagation based distributed estimation in a large sensor network employing random sleep strategies is explicitly evaluated for a simple model...
Provided by Drexel University
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White Papers
Optimal Rate Delay Tradeoffs for Multipath Routed and Network Coded Networks
May 2008
Via multi-terminal information theory, the authors present fundamental rate delay trade-offs that delay mitigating codes must have when utilized over multi-path routed and network coded networks....
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Optimality of Expectation Propagation Based Distributed Estimation for Wireless Sensor Network Initialization
May 2008
The authors establish that Expectation Propagation (EP), under some mild requirements and when properly organized, provide sensors with optimal Bayes estimators during the initialization phase of...
Provided by Catholic University of America
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White Papers
Distributed Estimation of Channel Gains in Sensor Networks
Nov 2008
Channel estimation algorithms are proposed for the initialization phase of a wireless sensor network, during which the nodes are still unaware of their neighbors or channel qualities. Both...
Provided by Drexel University
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White Papers
Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation
Dec 2009
The Robust-Generalized Iterative Approach (Robust-GIA), Robust-Fast Iterative Approach (Robust-FIA), and Robust-Decoder Covariance Optimization Approach (Robust-DCOA) are proposed for designing...
Provided by Hindawi Publishing
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White Papers
Spatial Domain Resource Sharing for Overlapping Cells in Indoor Environment
Dec 2009
As microcell wireless systems become more widespread, intercell interference among the access points will increase due to the limited frequency resource. In the overlapping cell scenario, radio...
Provided by Hindawi Publishing
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White Papers
Utilizing Context in Location-Aware Short-Range Wireless Communication
Jan 2010
The authors discuss how a short-range wireless communication service implemented for modern mobile communication devices can provide additional value for both the consumer and the service/product...
Provided by Hindawi Publishing
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White Papers
Phase-Shift Cyclic-Delay Diversity for MIMO OFDM Systems
Nov 2009
It is well known that a Multiple-Input-Multiple-Output (MIMO) transmission system can provide benefits on throughput and reliability in multipath fading channels over single-antenna systems. These...
Provided by Hindawi Publishing
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White Papers
Frequency-Based Optimization Design for Fractional Delay FIR Filters with Software-Defined Radio Applications
Jan 2010
Software-defined radio represents a major change in the design paradigm for radios, in which most of the functionality is made through programmable signal processing devices, giving the radio the...
Provided by Hindawi Publishing
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White Papers
Intercell Interference Coordination through Limited Feedback
Nov 2009
The authors consider the applications of multicell transmission schemes to the downlink of future wireless communication networks. A multicell Multiple-Input Multiple Output-(MIMOs) based scheme...
Provided by Hindawi Publishing
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White Papers
Broadcast Network Coverage with Multicell Cooperation
Oct 2009
Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV...
Provided by Hindawi Publishing
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White Papers
Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems
Oct 2009
The authors consider the problem of setting the uplink SIgnal-to-Noise-and-Interference (SINR) target and allocating transmit powers for mobile stations in multicell spatial multiplexing wireless...
Provided by Hindawi Publishing
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White Papers
Multiantenna Analog Network Coding for Multihop Wireless Networks
Oct 2009
This paper proposes a two-phase Minimum Mean-Square-Error Bidirectional Amplify- and Forward (MMSE-BAF) relaying protocol to allow two sources exchange independent messages via a relay node...
Provided by Hindawi Publishing
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White Papers
MBMS-IP Multicast/Broadcast in 3G Networks
Dec 2009
In this paper, the Multimedia Broadcast and Multicast Service (MBMS) as standardized in 3GPP is presented. With MBMS, multicast and broadcast capabilities are introduced into cellular networks....
Provided by Hindawi Publishing
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White Papers
Modeling and Performance Analyses of Hybrid Cellular and Broadcasting Networks
Nov 2009
Mobile communication services are getting more and more important and, in particular, multimedia services have attracted the interest of the users. Mobile TV is one of the most demanded...
Provided by Hindawi Publishing
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White Papers
The Implementation of a 2/4/8 Antennas Configurable Diversity OFDM Receiver for Mobile HDTV Application
Oct 2009
Two pre-FFT Adaptive Array (AA) antenna combiners and a post-FFT Carrier Diversity (CD) combiner are integrated with a Japan Terrestrial digital TV (ISDB-T) OFDM receiver using 90nm 7M1P CMOS...
Provided by Hindawi Publishing
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White Papers
Software-Defined Radio and Broadcasting
Oct 2009
Software-Defined Radio is not a myth anymore. As process technologies transitioned to 65nm and lower, power consumption, size, and cost are no longer impediments to SDR adaption. Many SDR products...
Provided by Hindawi Publishing
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White Papers
The Sandblaster Software-Defined Radio Platform for Mobile 4G Wireless Communications
Sep 2009
The authors present a tier 2 Software Defined-Radio platform (SDR), built around the latest Sandbridge Technologies' multithreaded Digital Signal Processor (DSP) SB3500, along with the description...
Provided by Hindawi Publishing
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White Papers
AL-FEC for Improved Mobile Reception of MPEG-2 DVB-T Transport Streams
Jul 2009
The authors investigate the use of application layer FEC protection in DVB-T (Digital Video Broadcasting-Terrestrial) networks for the provision of mobile services. Mobile reception is...
Provided by Hindawi Publishing
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White Papers
Video Streaming Transfer in a Smart Satellite Mobile Environment
Jul 2009
Transportation media are becoming "Smart spaces", where sophisticated services are offered to the passengers. The authors concentrate on video streaming provided on buses that move in urban,...
Provided by Hindawi Publishing
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White Papers
Converged Digital TV Services: The Role of Middleware and Future Directions of Interactive Television
Jun 2009
The subject of the future of the interactive Television medium has become a topic of great interest to the academic and industrial communities particularly since in the recent years there has been...
Provided by Hindawi Publishing
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White Papers
Null Steering in Failed Antenna Arrays
May 2011
Antenna array pattern nulling is desirable in order to suppress the interfering signals. But in large antenna arrays, there is always a possibility of failure of some elements, which may degrade...
Provided by Hindawi Publishing
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White Papers
Genetical Swarm Optimization of Multihop Routes in Wireless Sensor Networks
Nov 2010
In recent years, wireless sensor networks have been attracting considerable research attention for a wide range of applications, but they still present significant network communication...
Provided by Hindawi Publishing
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White Papers
A Neuro-Fuzzy Controller for Collaborative Applications in Robotics Using LabVIEW
Jun 2009
A neuro-fuzzy controller was designed and implemented using LabVIEW over a mobile robotic platform. The controller is based on fuzzy clusters, neural networks, and search techniques. Also,...
Provided by Hindawi Publishing
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White Papers
Analysing the Molva and Di Pietro Private RFID Authentication Scheme
Jun 2008
The private RFID authentication scheme by Molva and Di Pietro uses a non-cryptographic element for private identification. Through an exhaustive analysis of this element the authors have found...
Provided by INRIA
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White Papers
Address Space Randomization for Mobile Devices
Jun 2011
Address Space Layout Randomization (ASLR) is a defensive technique supported by many desktop and server operating systems. While Smartphone vendors wish to make it available on their platforms,...
Provided by Association for Computing Machinery
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White Papers
Wireless Sensor Networks in the Wild: Three Practical Issues After a Middleware Deployment
Dec 2011
This paper reflects on experiences in deploying middleware for a body sensor network, using commercial biosensors. Three types of issues are highlighted that arose during the deployment, which...
Provided by Association for Computing Machinery
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White Papers
Neighborhood Monitoring in Ad Hoc Networks
Jun 2010
Much research in ad hoc networks utilizes monitoring mechanisms to detect maliciously acting nodes. The faults that a system is exposed to range from simple omissions to packet manipulations and...
Provided by Association for Computing Machinery
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White Papers
Out-of-Order Durable Event Processing in Integrated Wireless Networks
Jan 2011
Many events in real world applications are long-lasting events which have certain durations. The temporal relationships among those durable events are often complex. Processing such complex events...
Provided by Reed Elsevier
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White Papers
Advanced Information Security Management Evaluation System
Jun 2011
Information Security Management Systems (ISMSs) are used to manage information about their customers and themselves by governments or business organizations following advances in e-commerce, open...
Provided by Korea University
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White Papers
Weaknesses and Improvements of a One-Time Password Authentication Scheme
Dec 2009
Authentication of communicating entities and confidentiality of transmitted data are fundamental procedures to establish secure communications over public insecure networks. Recently, many...
Provided by Sungkyunkwan University
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White Papers
Detecting Connection-Chains: A Data Mining Approach
Jan 2010
A connection-chain refers to a mechanism in which some-one recursively logs into a host, then from there logs into another host, and so on. Connection-chains represent an important vector in many...
Provided by University of Victoria
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White Papers
Return on Information Security Investment - The Viability of an Anti-Spam Solution in a Wireless Environment
Jan 2010
Much is said about the importance of investing in information security, but little is known on the ex-tent and effectiveness of such security programmes. A model that analyses the mechanics of an...
Provided by University of Malta
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White Papers
Security Protection of Software Programs by Information Sharing and Authentication Techniques Using Invisible ASCII Control Codes
Jan 2010
A new method for software program protection by information sharing and authentication techniques using invisible ASCII control codes is proposed. A scheme for sharing a secret source program...
Provided by National Chiao Tung University
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White Papers
Architecture for Decentralized Mitigation of Local Congestion in VANETs
Nov 2010
The limited communication resources in VANETs have to be used efficiently to achieve reliable communication even in high load situations, where high packet loss is expected. Packet loss can occur...
Provided by University of Ulm
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White Papers
Cooperative Position Verification - Defending Against Roadside Attackers 2.0
Nov 2010
Security analysis has shown that attacks from roadside attackers constitute the highest risk for Vehicular Ad-hoc NETworks (VANETs). Therefore, protecting them against these attackers is one of...
Provided by University of Ulm
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White Papers
Decentralized Position Verification in Geographic Ad Hoc Routing
Jan 2010
Inter-vehicle communication is regarded as one of the major applications of Mobile Ad hoc NETworks (MANETs). Compared to MANETs or Wireless Sensor Networks (WSNs), these so called Vehicular Ad hoc...
Provided by University of Ulm
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White Papers
Exploration of Adaptive Beaconing for Efficient Intervehicle Safety Communication
Feb 2010
In the future, inter-vehicle communication will make driving safer, easier, and more comfortable. As a cornerstone of the system, vehicles need to be aware of other vehicles in the vicinity. This...
Provided by University of Ulm
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White Papers
Degradation of Transmission Range in VANETs Caused by Interference
Feb 2010
Reliability is one of the key requirements for inter-vehicle communication in order to improve safety in road traffic. This paper describes the difficulties of inter-vehicle communication. The...
Provided by University of Ulm
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White Papers
Vehicle Behavior Analysis to Enhance Security in VANETs
Oct 2008
Vehicular Ad-Hoc NETworks (VANET) will help to improve traffic safety and efficiency. By exchanging information between each other, vehicles can warn drivers or even prepare for a dangerous...
Provided by University of Ulm
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White Papers
Scheduled Location Transparency for Privacy-Protected MANET Location Services
Jan 2008
Mobile Ad-hoc NETworks (MANETs) that use geographic routing protocols may lead to a severe privacy breach since the current position of any node in the network can be resolved. By changing the...
Provided by Hochschule Furtwangen University
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White Papers
Vulnerabilities of Geocast Message Distribution
Oct 2007
Geocast refers to the distribution of messages within a geographic destination region. This makes it an important paradigm for the application to Vehicular Ad hoc NETworks (VANETs), because most...
Provided by University of Ulm
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White Papers
A Solution to WLAN Authentication and Association DoS Attacks
Aug 2007
The growing popularity of the 802.11-based Wireless LAN (WLAN) also increases its risk of security attacks. The new WLAN security standard, 802.11i, addresses most issues on user authentication...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Multiple Response Approach for Adaptive Learning Service With Context-Based Multimedia Contents
May 2011
Learners can benefit more from the emerging ubiquitous computing technology in more learning scenarios beyond traditional computer-based e-learning system. But due to the great diversity of device...
Provided by Waseda University
