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mobile - wireless communications
(58983 results)-
White Papers
ROC: Resilient Online Coverage for Surveillance Applications
Feb 2011
The authors consider surveillance applications in which sensors are deployed in large numbers to improve coverage fidelity. Previous research has studied how to select active sensor covers...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On the Complexity of the Regenerator Placement Problem in Optical Networks
Apr 2011
Placement of regenerators in optical networks has attracted the attention of recent research works in optical networks. In this problem, the authors are given a network with an underlying topology...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Measuring Multipath Routing in the Internet
Jun 2011
Tools to measure Internet properties usually assume the existence of just one single path from a source to a destination. However, load-balancing capabilities, which create multiple active paths...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Network-Coding Multicast Networks With QoS Guarantees
Feb 2011
It is well-known that without admission control, network congestion is bound to occur. However, to implement admission control is difficult in IP-based networks, which are constructed out of the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Local Restoration With Multiple Spanning Trees in Metro Ethernet Networks
Apr 2011
Ethernet is becoming a preferred technology to be extended to Metropolitan Area Networks (MANs) due to its low cost, simplicity, and ubiquity. However, current Ethernet lacks a fast failure...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Forward Correction and Fountain Codes in Delay-Tolerant Networks
Feb 2011
Delay-tolerant ad hoc networks leverage the mobility of relay nodes to compensate for lack of permanent connectivity and thus enable communication between nodes that are out of range of each...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Cross-Layer Jamming Detection and Mitigation in Wireless Broadcast Networks
Feb 2011
Wireless communication systems are often susceptible to the jamming attack where adversaries attempt to overpower transmitted signals by injecting a high level of noise. Jamming is difficult to...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Adjacent Link Failure Localization With Monitoring Trails in All-Optical Mesh Networks
Jun 2011
Being reported as the most general monitoring structure for out-of-band failure localization approach, the monitoring trail (m-trail) framework has been witnessed with great efficiency and...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Simple Model for Chunk-Scheduling Strategies in P2P Streaming
Feb 2011
Peer-To-Peer (P2P) streaming tries to achieve scalability (like P2P file distribution) and at the same time meet real-time playback requirements. It is a challenging problem still not well...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Peering Equilibrium Multipath Routing: A Game Theory Framework for Internet Peering Settlements
Apr 2011
It is generally admitted that inter-domain peering links represent nowadays the main bottleneck of the Internet, particularly because of lack of coordination between providers, which use...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Scalable and Cost-Effective Interconnection of Data-Center Servers Using Dual Server Ports
Feb 2011
The goal of data-center networking is to interconnect a large number of server machines with low equipment cost while providing high network capacity and high bisection width. It is well...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Traffic-Aware Dynamic Routing to Alleviate Congestion in Wireless Sensor Networks
Jun 2011
The congestion problem in Wireless Sensor Networks (WSNs) is quite different from that in traditional networks. Most current congestion control algorithms try to alleviate the congestion by...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Performance Analysis of Real-Time Detection in Fusion-Based Sensor Networks
Jun 2011
Real-time detection is an important requirement of many mission-critical wireless sensor network applications such as battlefield monitoring and security surveillance. Due to the high network...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On the Effectiveness of Monitoring for Intrusion Detection in Mobile Ad Hoc Networks
Aug 2011
Several Intrusion Detection Techniques (IDTs) proposed for mobile ad hoc networks rely on each node passively monitoring the data forwarding by its next hop. This paper presents quantitative...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Generic Multilevel Architecture for Time Series Prediction
Mar 2011
Rapidly evolving businesses generate massive amounts of time-stamped data sequences and cause a demand for both univariate and multivariate time series forecasting. For such data, traditional...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Adaptive Cluster Distance Bounding for High-Dimensional Indexing
Jun 2011
The authors consider approaches for similarity search in correlated, high-dimensional data sets, which are derived within a clustering framework. They note that indexing by "Vector Approximation"...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Optimal Resource Allocation for Pervasive Health Monitoring Systems With Body Sensor Networks
Nov 2011
Pervasive health monitoring is an e-Health service, which plays an important role in prevention and early detection of diseases. There are two major challenges in pervasive health monitoring...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
BUBBLE Rap: Social-Based Forwarding in Delay-Tolerant Networks
Nov 2011
The increasing penetration of smart devices with networking capability form novel networks. Such networks, also referred as Pocket Switched Networks (PSNs), are intermittently connected and...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed Fault-Tolerant Quality of Wireless Networks
Feb 2011
A Mobile Ad hoc NETwork (MANET) consists of a group of communicating hosts that form an arbitrary network topology by means of any of several wireless communication media. MANET communications...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Lifetime Analysis of Random Event-Driven Clustered Wireless Sensor Networks
Oct 2011
Considering event-driven clustered wireless sensor networks, a probabilistic approach for analyzing the network lifetime is presented when events occur randomly over the network field. To this...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Density-Aware Routing in Highly Dynamic DTNs: The RollerNet Case
Dec 2011
The authors analyze the dynamics of a mobility data set collected in a pipelined Disruption-Tolerant Network (DTN), a particular class of intermittently-connected wireless networks characterized...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Approach to Wireless Intrusion Detection System for Wireless Network Based on Multiagent System of Ant Colony Optimization Algorithm
Dec 2011
Various approaches to Intrusion Detection are currently being used, but they are relatively ineffective in finding the intruder. Wireless networks are particularly vulnerable to intrusion, as they...
Provided by International Journal of Computer Applications
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White Papers
Simulation of Self-Organized Public-Key Management for Ad Hoc Networks
Dec 2011
In this paper, the authors addressed the difficult problem of key management in mobile ad hoc networks. A self-organized public-key management scheme is proposed that does not rely on any trusted...
Provided by International Journal of Computer Applications
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White Papers
Fuzzy Logic Based Intrusion Detection System Against Blackhole Attack on AODV in MANET
Dec 2011
Security is an essential feature for wired and wireless network. But due to its unique characteristics of MANETs, it creates a number of consequential security challenges to network. MANETs are...
Provided by International Journal of Computer Applications
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White Papers
A High-Throughput ASIC implementation of Configurable Advanced Encryption Standard (AES) Processor
Jan 2012
In this paper, a compact and fully pipelined ASIC implementation of AES cryptography algorithm has been presented. The proposed implementation is configurable to take 128, 192 and 256-bit keys...
Provided by International Journal of Computer Applications
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White Papers
Analysis of Key Management and Quantum Cryptography in Wireless Sensors Networks
Dec 2011
Key management and Quantum Cryptography (QC) are very interesting and challenging areas in Wireless Sensor Networks (WSN). In order to make secure communications around WSN, communication between...
Provided by International Journal of Computer Applications
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White Papers
Chaos Based Encryption and Decryption of Image and Video in Time and Frequency Domain
Dec 2011
Encryption is one of the well-known technique to provide security in transmission of multimedia contents over the internet and wireless networks. The simplest way of encrypting multimedia content...
Provided by International Journal of Computer Applications
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White Papers
Comprehensive Survey on Game Theory based Intrusion Detection System for Mobile Adhoc Networks
Dec 2011
Mobile Adhoc Networks (MANET's) are autonomous distributed systems that comprise a number of mobile nodes connected by wireless links, forming arbitrary time varying wireless network topologies....
Provided by International Journal of Computer Applications
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White Papers
Methods of Preventing and Detecting Black/Gray Hole Attacks on AODV-Based MANET
Dec 2011
Mobile Ad hoc NETwork (MANET) is constructed from a collection of nodes that can move anywhere and anytime in different areas without any infrastructure. Each node works at the same time as router...
Provided by International Journal of Computer Applications
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White Papers
Study on Congestion Avoidance in MANET
Dec 2011
Congestion is a main challenge in modern network environment. Unawareness of the network topology the network devices are demand to provide sufficient and structured connection establishment to...
Provided by International Journal of Computer Applications
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White Papers
Power Budget Performances of Free Space Optical Link Using Direct Line of Sight Propagation
Dec 2011
Optical Wireless Communication (OWC) systems suffer from average optical signal power loss and random power fading due to the different atmospheric condition. In this paper, the authors propose a...
Provided by International Journal of Computer Applications
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White Papers
High Efficiency Mobile Ground Station Antenna Using Displaced Ellipse Reflector
Dec 2011
This present paper demonstrates the design of a mobile ground station terminal using a offset dual reflector antenna geometry called Axially Displaced Ellipse (ADE). ADE configuration provides a...
Provided by ISRO
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White Papers
Searching for Radio Beacons With Mobile Agents That Perceive Discrete Signal Intensities
Mar 2011
In this paper, the authors present a number of algorithms for an agent to find a radio source in an unknown two-dimensional environment. They consider a model in which a mobile agent can perceive...
Provided by Technische Universität Braunschweig
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White Papers
A Protocol for Self-Synchronized Duty-Cycling in Sensor Networks: Generic Implementation in Wiselib
Dec 2010
In this paper, the authors present a protocol for self-synchronized duty-cycling in wireless sensor networks with energy harvesting capabilities. The protocol is implemented in Wiselib, a library...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
WISEBED - Pan-European Wireless Sensor Network Testbeds
Apr 2008
Until very recently, scientific efforts for studying computing methodologies for decentralized complex systems have been very limited. A particularly promising and hot research area is the design...
Provided by Technische Universität Braunschweig
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White Papers
Designing a Flexible and Low-Cost Testbed for Wireless Sensor Networks
Jan 2012
Setting up a Wireless Sensor Network (WSN) for an experiment is both time consuming and effort intensive. Many testbeds connect and manage experimental nodes using wires and gateways. It leads to...
Provided by Inderscience Enterprises
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White Papers
Lorien: A Pure Dynamic Component-Based Operating System for Wireless Sensor Networks
Dec 2009
In this paper, the authors examine the current state of the art in WSN operating systems in terms of their general programming models and run-time reprogramming features. While all OSs admit the...
Provided by Association for Computing Machinery
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White Papers
Data Dissemination in Wireless Sensor Networks: A State-of-the Art Survey
Mar 2012
A wireless sensor network is a network of tiny nodes with wireless sensing capacity for data collection processing and further communicating with the Base Station this paper discusses the overall...
Provided by Computer Science Journals
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White Papers
TCP Performance Optimizations for Wireless Sensor Networks
Dec 2011
Since the appearance of downsized and simplified TCP/IP stacks, single nodes from Wireless Sensor Networks (WSNs) have become directly accessible from the Internet with commonly used networking...
Provided by University of Bern
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White Papers
Sensor Network Experimentation Using TARWIS
Jan 2012
Research in the area of Wireless Sensor Networks (WSNs) has become more and more driven by real-world experimental evaluations rather than network simulation. Numerous testbeds of WSNs have been...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distance Estimation by Constructing the Virtual Ruler in Anisotropic Sensor Networks
Aug 2010
Distance estimation is fundamental for many functionalities of wireless sensor networks and has been studied intensively in recent years. A critical challenge in distance estimation is handling...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Non-Replication Multicasting Scheme in Delay Tolerant Networks
Jan 2011
Delay tolerant Networks (DTNs) are a special type of wireless mobile networks which may lack continuous network connectivity. Multicast is an important routing function that supports the...
Provided by Temple University
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White Papers
Channel on Demand: Optimal Capacity for Cooperative Multi-Channel Multi-Interface Wireless Mesh Networks
Mar 2011
Cooperative Communication (CC) has been proposed recently as an effective way to mitigate channel impairments. It has been shown that cooperative communications have the potential to significantly...
Provided by Temple University
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White Papers
A Metric for Routing in Delay-Sensitive Wireless Sensor Networks
Aug 2010
The authors present a new scheme to reduce the end-to-end routing delay in the mission-critical applications of the Wireless Sensor Networks (WSNs) under the duty cycle model. While greedy routing...
Provided by Temple University
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White Papers
Quantitative Analysis of the Effect of Transmitting Power on the Capacity of Wireless Ad Hoc Networks
Feb 2010
This paper presents a fundamental understanding regarding the effect that transmitting power has on the capacity of wireless ad hoc networks. Under the assumption that all interference is...
Provided by Association for Computing Machinery
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White Papers
Secure Reputation Monitoring System - A Novel Connected Dominating Set-Based Framework for WSNs
May 2010
Reputation and Trust-based Monitoring Systems (RTMSs) have provided a ubiquitous framework for secure Wireless Sensor Network (WSN) computing. However, neighborhood monitoring, though useful,...
Provided by John Wiley & Sons
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White Papers
Survey on Anonymous Communications in Computer Networks
Nov 2009
Anonymous communications aim to preserve communications privacy within the shared public network environment. It can provide security well beyond content privacy and integrity. The scientific...
Provided by Reed Elsevier
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White Papers
Attack and Flee: Game-Theory-Based Analysis on Interactions Among Nodes in MANETs
Aug 2010
In mobile ad hoc networks, nodes have the inherent ability to move. Aside from conducting attacks to maximize their utility and cooperating with regular nodes to deceive them, malicious nodes get...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Uncertainty Modeling and Reduction in MANETs
Aug 2010
Evaluating and quantifying trust stimulates collaboration in Mobile Ad hoc NETworks (MANETs). Many existing reputation systems sharply divide the trust value into right or wrong, thus ignoring...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Resource Scheduling in Wireless Networks Using Directional Antennas
Sep 2010
Due to a continued increase in the speed and capacities of computing devices, combined with the society's growing need for mobile communication capabilities, Multihop Wireless Networks (MWNs),...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Adaptive Routing in Underwater Delay Tolerant Sensor Networks
Jul 2011
Underwater Sensor Network (UWSN) has attracted significant attention from both academia and industry. Different from terrestrial sensor nodes, underwater sensor nodes are usually mobile, much...
Provided by University of Connecticut
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White Papers
Flow Based XOR Network Coding for Lossy Wireless Networks
Jul 2011
The broadcast nature of wireless links makes wireless networks an attractive environment for intersession network coding. Most intersession network coding protocols exploit this property, but...
Provided by Temple University
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White Papers
Connected Point Coverage in Wireless Sensor Networks Using Robust Spanning Trees
Mar 2011
Energy limitation is one of the most critical challenges in the area of sensor networks. Sleep scheduling mechanisms can reduce the energy consumption. Coverage mechanisms attempt to cover the...
Provided by Temple University
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White Papers
Fine-Grained Localization With Pairwise Nodes Coverage
Mar 2011
Localization is an important design issue in wireless sensor networks. In this paper, the authors will focus on the sensor deployment for localization with the consideration of coverage and...
Provided by Temple University
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White Papers
Making Many People Happy: Greedy Solutions for Content Distribution
Jun 2011
The increase in multimedia content makes providing good quality of service in wireless networks a challenging problem. Consider a set of users, with different content interests, connected to the...
Provided by Temple University
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White Papers
ZigZag: A Content-Based Publish/Subscribe Architecture for Human Networks
Jul 2011
The wide use of mobile devices gives rise to many novel network applications, which require an efficient communication substrate. These networks, which are comprised solely of human-carried mobile...
Provided by Temple University
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White Papers
On the Construction of the Minimum Cost Content-Based Publish/Subscribe Overlays
Jun 2011
Content-based publish/subscribe overlay is gaining popularity in large-scale content distribution applications for its flexibility and anonymity. Since such overlays are built on top of diverse...
Provided by Temple University
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White Papers
Towards Approximate Event Processing in a Large-Scale Content-Based Network
Mar 2011
Event matching is a critical component of large-scale content-based publish/subscribe systems. However, most existing methods suffer from a dramatic performance degradation when the system scales...
Provided by Temple University
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White Papers
Delegation Forwarding in Delay Tolerant Networks Multicasting
Mar 2011
Delay Tolerant Networks (DTNs) are a special type of wireless mobile networks which may lack continuous network connectivity. Multicast supports the distribution of data to a group of users, a...
Provided by Temple University
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White Papers
Fast Mobility Control Protocols With Sink Location Protection in Wireless Sensor Networks
May 2011
In this paper, the authors propose several novel fast converging mobility control protocols to achieve optimal deployment for streaming data flows in Wireless Sensor Networks (WSNs). The authors...
Provided by Temple University
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White Papers
Quasi-Kautz Digraphs for Peer-to-Peer Networks
Jun 2010
Structured Peer-To-Peer (P2P) networks have emerged as a good candidate infrastructure for building novel large-scale and robust network applications, in which participating peers share resources...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Stability-Optimal Grouping Strategy of Peer-to-Peer Systems
Nov 2010
When applied in high-churn Internet environments, P2P systems face a dilemma: although most participants are too unstable, a P2P system requires sufficient stable peers to provide satisfactory...
Provided by Peking University
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White Papers
Topology Characterization and Performance Analysis of IEEE 802.15.4 Multi-Sink Wireless Sensor Networks
Jun 2007
Topology characterization of wireless sensor networks is a key issue for network planning, management and control as well as for maximizing the network performance and for optimizing protocol...
Provided by University of Rome
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White Papers
Analysis of Cluster Interconnection Schemes in 802.15.4 Beacon Enabled Networks
Apr 2008
In this paper, the authors consider the interconnection of IEEE 802.15.4 beacon enabled network clusters. They discuss two types of interconnections. One type can be achieved by using the PAN...
Provided by Taylor & Francis Group
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White Papers
Virtual Grid Spatial Reusing Algorithm for MAC Address Assignment in Wireless Sensor Network
Apr 2008
With the development of the wireless communication and micro-elector-mechanism-system, the low-cost, low-power, multifunctional sensor nodes have emerged in recent years. Wireless sensor network...
Provided by Xidian University
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White Papers
Stability Problems of Transport of Event Data in Realistic Wireless Sensor Networks
Apr 2008
In general, wireless sensor networks have a certain degree of spatial redundancy, which means that a high number of nodes can sense the same event at the same time. This redundancy permits to...
Provided by Fukuoka Institute of Technology
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White Papers
A Fault-Tolerant Model of Wireless Sensor-Actuator Network
Apr 2008
In a Wireless Sensor and Actuator Network (WSAN), a group of sensor nodes, actuators, and actuation devices is geographically distributed and linked by wireless networks. Sensor nodes gather...
Provided by Taylor & Francis Group
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White Papers
Distributed Intrusion Detection Systems for Enhancing Security in Mobile Wireless Sensor Networks
Apr 2008
The authors present an approach to provide Intrusion Detection Systems (IDS) facilities into Wireless Sensors Networks (WSNs). WSNs are usually composed of a large number of low power sensors....
Provided by Taylor & Francis Group
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White Papers
ESecRout: An Energy Efficient Secure Routing for Sensor Networks
Apr 2008
In this paper, the authors present an Energy Efficient Secure Routing Protocol for Sensor Networks (ESecRout). The protocol uses the symmetric cryptography to secure messages, and uses a small...
Provided by Taylor & Francis Group
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White Papers
A Cross-Layer Proportional Fair Scheduling Algorithm With Packet Length Constraint in Multiuser OFDM Networks
Jul 2007
In this paper, the authors investigate the Proportional Fair Scheduling (PFS) problem for multiuser OFDM systems, considering the impact of packet length. Packet length influences scheduling...
Provided by Tsinghua University
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White Papers
Delay Analysis of IEEE 802.11e EDCA Under Unsaturated Conditions
Aug 2007
With the successful development of IEEE 802.11 based Wireless LAN (WLAN), applications with QoS requirements are asked to be provided in WLANs. Because of their delay restrictions, real-time...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Dynamic Admission Control Scheme for QoS Supporting in IEEE 802.11e EDCA
Aug 2007
With the successful development of IEEE 802.11 based Wireless LAN (WLAN), the IEEE 802.11e Enhanced Distributed Channel Access (EDCA) is proposed to support QoS of applications. However, EDCA...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Resource Allocation in Multi-Cell OFDMA-Based Relay Networks
Apr 2010
Cooperative relay networks combined with Orthogonal Frequency Division Multiplexing Access (OFDMA) technology has been widely recognized as a promising candidate for future cellular infrastructure...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Introduction to the Special Issue on Advances on Heterogeneous Wireless Sensor Networks
Apr 2008
Heterogeneous Wireless Sensor Networks (HWSNs), supported by recent technological advances in low power wireless communications along with silicon integration of various functionalities such as...
Provided by Osaka University
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White Papers
Exploiting Multiuser Diversity in OFDMA Wireless Mesh Networks by Fractional Spatial Reuse
Mar 2010
The authors consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Scalable and Media Aware Adaptive Video Streaming Over Wireless Networks
May 2008
This paper proposes an advanced video streaming system based on scalable video coding in order to optimize resource utilization in wireless networks with retransmission mechanisms at radio...
Provided by Hindawi Publishing
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White Papers
Distributed Physical Carrier Sensing Adaptation Scheme in Cooperative MAP WLAN
Aug 2009
Recently a Multiple Access Point (MAP) architecture is proposed for Wireless Local Area Networks (WLAN) to exploit the spatial diversity by permitting each user to associate with multiple APs....
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Traffic-Aware Base Station Sleeping in Dense Cellular Networks
Aug 2010
The energy consumption of Information and Communication Technology (ICT) industry has become a serious problem, which mostly comes from the network infrastructure, rather than the mobile...
Provided by Tsinghua University
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White Papers
End-to-End Throughput-Aware Channel Assignment in Multi-Radio Wireless Mesh Networks
Nov 2007
Wireless mesh networks are deployed as broadband backbones to provide ubiquitous wireless access for residents and local businesses. Utilizing multiple channels has the potential to scale up the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Delay Analysis for Sleep-Based Power Saving Mechanisms With Downlink and Uplink Traffic
Sep 2009
In this paper, an analytical model has been proposed for sleep-based power saving mechanisms to analyze packet queueing delay with the existence of both downlink and uplink traffic. Different...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Survey on Multi-Constrained Optimal Path Computation: Exact and Approximate Algorithms
Jun 2010
The paper presents a survey on the techniques to solve the Multi-Constrained Optimal Path (MCOP) problem. Computing the MCOP is a task shared by many research areas, from transportation systems to...
Provided by Reed Elsevier
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White Papers
A Garch-Based Adaptive Playout Delay Algorithm for VoIP
Jun 2010
Network delay, packet loss and network delay variability (jitter) are important factors that impact on perceived voice quality in VoIP networks. An adaptive playout buffer is used in a VoIP...
Provided by Reed Elsevier
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White Papers
End-to-End Quality of Service Seen by Applications: A Statistical Learning Approach
Jun 2010
The focus of this paper is on the estimation of Quality of Service (QoS) parameters seen by an application. The authors' proposal is based on end-to-end active measurements and statistical...
Provided by Reed Elsevier
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White Papers
On Link-Level Starvation in Dense 802.11 Wireless Community Networks
Jun 2010
With the growing number of spontaneously deployed Wi-Fi hotspots and home networks, end-users often experience significant performance degradation or even starvation. However, the authors observe...
Provided by Reed Elsevier
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White Papers
On the Rate Adaptation for IEEE 802.11 Wireless Networks
Jun 2010
Rate Adaptation (RA) is a mechanism to choose transmission rate based on the dynamic channel quality in wireless networks. This paper studied the adaptation algorithm run solely at the sender-side...
Provided by Reed Elsevier
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White Papers
Agent-Based Load Balancing Routing for LEO Satellite Networks
Jul 2010
To ensure an intelligent engineering of traffic over entire satellite networks, a distributed routing scheme for Low-Earth Orbit (LEO) satellite networks, Agent-based Load Balancing Routing...
Provided by Reed Elsevier
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White Papers
Good Encodable Irregular Quasi-Cyclic LDPC Codes
Nov 2008
The existing encodable irregular LDPC codes may have a degraded BER performance when it is derived from classical regular QC LDPC codes since both girth property and weight property are not...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Normalized LLR Soft Information Demapping Method in DTMB System
Nov 2008
This paper presents a normalized de-mapping method with application to the Digital Terrestrial Multimedia Broadcasting (DTMB) system. Normalized Logarithm Likelihood Ratio (NLLR) soft information...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Shaping Gain for AWGN Channel by Non-Uniform Constellation in LDPC-Coded System
Nov 2008
It is commonly believed that there is a gap between the channel capacity and the highest achievable rate of equiprobable uniform constellation. To achieve shaping gain, non-uniform constellation...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
The Analysis of Cycle Structure for a Class of Quasi-Cyclic LDPC Codes
Nov 2008
In this paper, the authors analyze the cycle structure of a class of quasi-cyclic LDPC codes, and divide the cycles of this kind of LDPC codes into three classes. It offers some help for improving...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Stopping Criterion for Nonbinary LDPC Codes Over GF(q)
Nov 2008
Non-binary Low-Density Parity-Check (LDPC) codes over finite fields GF(q) have a better performance than those of the binary low-density parity-check codes, at short and medium block lengths, but...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Flexible Low-Complexity Decoding Architecture for QC-LDPC Codes
Nov 2008
A novel flexible decoding architecture for Quasi-Cyclic (QC) Low-Density Parity-Check (LDPC) code is proposed in this paper to reduce decoding complexity. The novelty of this architecture lies in...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Compressing Construction of QC-LDPC Codes
Nov 2008
Two compressing construction methods of Quasi-Cyclic LDPC (QC-LDPC) codes are proposed, which can be called recursive-compressing and single-compressing respectively. Selecting a good QC-LDPC code...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Efficient Early Stopping Scheme for LDPC Decoding Based on Check-Node Messages
Nov 2008
An efficient early stopping method is proposed in this paper to reduce the average number of iterations for Low Density Parity Check (LDPC) decoders. The method is very efficient especially when...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Bandwidth Efficient Cooperative Diversity Scheme Based on Relaying Superposition Symbols
Nov 2008
A bandwidth efficient three-user cooperative diversity scheme based on relaying superposition symbols is proposed. Each user has two partners and each partner relays superposition symbols of the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Framework for Multiplexing Cooperative Routes in Multi-Source Wireless Networks
Nov 2008
In this paper, the authors investigate the power allocation problem involving how to multiplex cooperative routes in multisource ad hoc wireless networks. The aim is to provide a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Joint Optimization of Relay Selection and Power Allocation in Cooperative Wireless Networks
Nov 2008
In cooperative wireless networks, it is often the case that multi-source and multi-relay cooperate to transmit their own data to the destination, namely, the access point. For the cooperative...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Comparative Study of Cooperative Networks With Differential Modulation
Nov 2008
Cooperative networks have been considered for their spatial diversity benefit in wireless communications. The signal in the cooperative networks can be transmitted by a repetitive manner or using...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Burst Mode Cooperative MAC Protocol in Ad Hoc Wireless Networks
Nov 2008
Cooperative Medium Access Control (MAC) Protocols make use of the multi-rate capabilities of IEEE 802.11 to achieve higher throughput and shorter delay. This is achieved through transmitting a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Extended Link Adaptation for Cooperative Networks
Nov 2008
In this paper, the authors propose an Extended Link Adaptation (ELA) technique to maximize the transmission rate of cooperative networks. Unlike the average link adaptation, the ELA not only...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Cooperative Architecture for Integrated Mobile Networking Based on Soft-Switch Control
Nov 2008
This paper proposes an open cooperative architecture for the integration of mobile networks. It is based on the Soft-switch idea which is the control functional entity of Next Generation Network...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Equalisation and Iterative Reception for Spectrally Efficient CPM in Multipath Environments
Oct 2010
Modern spectrally efficient Continuous Phase Modulation (CPM) waveforms offer attractive properties for narrowband tactical communications operating in VHF/UHF 30-400MHz bands. These waveforms...
Provided by Institute of Electrical and Electronics Engineers
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Whitepapers
The Social Business: Advent of a new age
Apr 2012
As the world becomes more instrumented, interconnected and intelligent and the population continues to embrace social computing, today's enterprises face the dawn of a new era - the era of the...
Provided by IBM
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White Papers
QoS Issues of Media Access Delay and Throughput in WLAN
Mar 2010
To analyze the performance of various MAC protocols in providing QoS to users of WLAN, the metrics used were Throughput, Data Drop, Retransmission and Medium Access Delay. During the evaluation of...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Characteristic Analysis of VOIP Traffic for Wireless Network
Mar 2010
A traditional Voice over Internet Protocol (VoIP) technique is based on client/server architecture. In this paper, the authors present VoIP architecture for Ad-hoc network based on H.323 Standard...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Security Aspects in Ad Hoc Network Routing
Mar 2010
The authors have presented here some security aspects related to the routing protocols for Mobile Ad hoc NETworks (MANETs). A mobile ad-hoc network is a self-configuring network of mobile routers,...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Performance Analysis of a Reliable Handoff Procedure for IEEE 802.16e Based Networks
Mar 2010
IEEE 802.16 is protocol for fixed broadband wireless access that is currently trying to add mobility among the mobile users in the standard. However, mobility adds some technical barriers that...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Performance Analysis of Access Control Protocols i.e. EAP, RADIUS and DIAMETER of WiMAX Security
Mar 2010
Wi-MAX technology (IEEE 802.16) is the latest technology promised to provide Broadband Wireless Access (BWA) over a long range. Meanwhile its security is becoming critical issue with the rapid...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Spectral Containment and Performance Comparison of Constant Envelope OFDM-PM and Standard OFDM
Mar 2010
In this paper, the authors study the suitability of constant envelope multi-carrier modulation technique. This technique combines Orthogonal Frequency Division Multiplexing (OFDM) and Phase...
Provided by Motilal Nehru National Institute Of Technology
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White Papers
Minimizing Power Consumption in Mobile Usage
Mar 2010
The main purpose of the project is to minimize the power consumption. Power efficiency is necessary to lengthen the battery lifetime in the portable systems, as well as to reduce the operational...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Wireless Technologies in E-Business: A Survey
Mar 2010
Developments in new mobile devices and services have raised the interest of corporations to implement wireless applications in their own businesses. Various new technologies are broadening the...
Provided by RIMT - Institute of Engineering & Technology
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White Papers
Selection of Ad Hoc Network Routing Protocols by Performance Analysis
Mar 2008
A Mobile Ad hoc NETwork (MANET) is a collection of wireless mobile nodes communicating with each other using multihop wireless links without any existing network infrastructure or centralized...
Provided by Indian Institute of Information Technology & Management
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White Papers
Performance Comparison of AODV, OLSR and OFLSR in Wireless Mesh Networks
Mar 2008
Wireless mesh networks are the next step in the evolution of wireless architecture, delivering wireless services for a large variety of applications in personal, local, campus, and metropolitan...
Provided by PEC University of Technology
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White Papers
Distributed Coverage Verification in Sensor Networks Without Location Information
Aug 2010
In this paper, the authors present three distributed algorithms for coverage verification in sensor networks with no location information. They demonstrate how, in the absence of localization...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Generic Coverage Verification Without Location Information Using Dimension Reduction
Feb 2009
Wireless Sensor Networks (WSNs) have recently emerged as a key sensing technology with diverse civilian and military applications. In these networks, a large number of small sensors or nodes...
Provided by University of Pennsylvania
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White Papers
A Massively Parallel Adaptive Fast-Multipole Method on Heterogeneous Architectures
Nov 2009
The authors present new scalable algorithms and a new implementation of their kernel-independent fast multi-pole method (Ying et al. ACM/IEEE SC '03), in which they employ both distributed memory...
Provided by Association for Computing Machinery
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White Papers
Understanding the Design Trade-Offs Among Current Multicore Systems for Numerical Computations
Feb 2009
In this paper, the authors empirically evaluate fundamental design trade-offs among the most recent multi-core processors and accelerator technologies. Their primary aim is to aid application...
Provided by Georgia Institute of Technology
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White Papers
Optimization of Sparse Matrix - Vector Multiplication on Emerging Multicore Platforms
Dec 2008
The authors are witnessing a dramatic change in computer architecture due to the multi-core paradigm shift, as every electronic device from cell phones to supercomputers confronts parallelism of...
Provided by Reed Elsevier
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White Papers
D-SeDGAM: A Dynamic Service Differentiation Based GTS Allocation Mechanism for IEEE 802.15.4 WSN
Jan 2010
The plethora of applications for Wireless Sensor Networks (WSN) has experienced significant growth in recent years. Every application has a different set of requirements and it is highly desirable...
Provided by Cork Institute of Technology
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White Papers
A Novel GTS Mechanism for Reliable Multihop Transmission in the IEEE 802.15.4 Network
Oct 2011
The IEEE 802.15.4 standard provides Guaranteed Time Slot (GTS) mechanism for reliable transmission. GTS mechanism is suitable for transmitting time-sensitive data because it allocates time slots...
Provided by Hindawi Publishing
