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wireless lan
(1554 results)-
White Papers
Review of Amateur-Built 2.4-GHz Wireless-LAN Directional Wire Antennas
Jul 2009
This paper is the review of amateur-built high-directivity wire antennas, for Wireless Local Area Network (WLAN), operates at 2.4-GHz frequency range. Those antennas can be deployed for range...
Provided by Assumption University
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White Papers
Robust Cooperative Relaying in a Wireless LAN: Cross-Layer Design and Performance Analysis
Oct 2009
A key technology in cooperative communications is Distributed Space-Time Coding (DSTC) which achieves spatial diversity gain from multiple relays. A novel DSTC, called Randomized Distributed...
Provided by New York University
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White Papers
Are Cognitive Radios Energy Efficient? a Study of the Wireless LAN Scenario
Nov 2009
Cognitive radios have been proposed in recent years to make more efficient use of the wireless spectrum and alleviate congestion on widely used frequency bands. A key aspect of these radios is the...
Provided by Wichita State University
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White Papers
Wideband (5-6 GHz WLAN Band) Circularly Polarized Patch Antenna for Wireless Power Sensors
Jan 2010
Wireless Local Area Network (WLAN) applications are proliferating very rapidly to replace short distance tethered communication links between devices, sensors, and computers. Such communication...
Provided by Sony Ericsson Mobile Communications
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White Papers
New Channel Access Coordination Functions in Large Scale Wireless LAN Systems
Oct 2009
Large-scale wireless LAN systems based on the IEEE 802.11 standards have become the most successful wireless networks deployed in large organizations, such as educational campuses and corporate...
Provided by University of California, Irvine
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White Papers
Proportional Fairness in Multi-Rate Wireless LANs
Jan 2010
In multi-rate wireless LANs, throughput-based fair bandwidth allocation can lead to drastically reduced aggregate throughput. To balance aggregate throughput while serving users in a fair manner,...
Provided by Yale University
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White Papers
Alibi Framework for Identifying Reactive Jamming Nodes in Wireless LAN
Aug 2010
Reactive jamming nodes are the nodes of the network that get compromised and become the source of jamming attacks. They assume to know any shared secrets and protocols used in the networks. Thus,...
Provided by Association for Computing Machinery
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White Papers
Multiscale Analysis for Wireless LAN Traffic Characterization
Jan 2010
In this paper, the author's overview the various network traffic models, especially focusing on the multiscale analysis. By multiscale analysis the authors mean wavelet-based self-similar and...
Provided by University of Maryland
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White Papers
Dynamic Scheduling of PCF Traffic in an Unstable Wireless LAN
Jan 2010
Wireless LANs are increasingly popular and are being used for a wide variety of applications. In order to accommodate the demands of real-time services and multimedia based applications, the...
Provided by Santa Clara University
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White Papers
Reliable Multicast in Multi - Access Wireless LANs
Jan 2010
Multicast is an efficient paradigm for transmitting data from a sender to a group of receivers. This paper focus on multicast in single channel multi - access wireless Local Area Networks (LANs)...
Provided by Indian Institute of Science
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White Papers
A Dual Authentication Protocol for IEEE 802.11 Wireless LANs
Jan 2010
This paper first identify a vulnerability of IEEE 802.11 wireless LANs in which a compromised access point can still authenticate itself to a wireless station and gain control over the connection,...
Provided by University of South Carolina
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White Papers
Poster Abstract: Trace-Based Analysis of Wi-Fi Scanning Strategies
Jun 2009
The number of smartphones in use is overwhelmingly increasing every year. These devices rely on connectivity to the Internet for the majority of their applications. The ever-increasing number of...
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White Papers
Challenges and Recent Advances in QoS Provisioning in Wireless Mesh Networks
Apr 2008
Wireless Mesh Networks (WMNs) comprising of mobile and static nodes connected wirelessly are emerging as a key technology for future generation of wireless networks. WMNs self-organize,...
Provided by University of Queensland
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Whitepapers
Ensuring HIPAA Compliance in Healthcare
Nov 2008
Wireless LANs are prevalent in healthcare institutions. The constant need for mobility among doctors, nurses, and staff while remaining connected to clinical information systems make them an ideal...
Provided by Hewlett-Packard (HP)
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White Papers
Vocera Communications: HIPAA Data Security and Privacy Standards for Voice Communications Over a Wireless LAN
Jun 2007
This white paper will address compliance issues associated with voice communications over wireless networking technologies within the context of the Health Insurance Portability and Accountability...
Provided by Vocera Communications
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White Papers
Wi-Fi, Healthcare & HIPAA: WLAN Management in the Modern Hospital
Aug 2008
The combination of HIPAA regulations and the critical nature of hospital applications have made wireless LAN management one of the top issues facing health care IT organizations. This paper looks...
Provided by AirMagnet
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White Papers
Structured Network Coding and Cooperative Wireless Ad-Hoc Peer-to-Peer Repair for WWAN Video Broadcast
Jan 2009
In a scenario where each peer of an ad-hoc Wireless Local Area Network (WLAN) receives one of many available video streams from a Wireless Wide Area Network (WWAN), authors propose a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Multi-Antenna Techniques for Evolved 3G Wireless Communication Networks: An Overview
Feb 2009
Multi-antenna techniques offer significant capacity benefits. But realizing these gains in practical wireless systems remains a very challenging problem. MIMO-OFDM has been used in wireless LAN...
Provided by Academy Publisher
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White Papers
A Business Case for the Deployment of a 4G Wireless Heterogeneous Network in Spain
Sep 2007
The emergence of wireless packet-switched networks such as UMTS, WLAN and WiMAX allows the introduction of innovative services and opens up a new range of revenues. It is considered that 4G...
Provided by Universitat Pompeu Fabra
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White Papers
Interference of 802.11B WLAN and Bluetooth: Analysis and Performance Evaluation
May 2010
IEEE 802.11 and Bluetooth, these two operating in the unlicensed 2.4 GHz frequency band are becoming more and more popular in the mobile computing world. The number of devices equipped with IEEE...
Provided by University of Bridgeport
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Whitepapers
Distributed Source Coding for WWAN Multiview Video Multicast With Cooperative Peer-to-Peer Repair
Apr 2011
Video multicast over Wireless Wide Area Networks (WWAN) is difficult because of unavoidable packet losses and impracticality of retransmission on a per packet, per client basis, due to the known...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Evaluation of Context Distribution Methods Via Bluetooth and WLAN: Insights Gained While Examining Battery Power Consumption
Jul 2008
In a traditional context-aware system, most context information is local to a device. However, the authors may need access to context information from outside the device. Increasingly mobile...
Provided by Association for Computing Machinery
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White Papers
Multiple Subcarrier Indoor Geolocation System in MIMO-OFDM WLAN APs Structure
Dec 2009
This report aims to utilize existing and future Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Wireless Local Area Network (MIMO-OFDM WLAN) systems characteristics -...
Provided by Ibaraki University
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Whitepapers
Case Study: Bank of the West Approves Commercial Loans in One Day
Dec 2010
Bank of the West reduced loan process times to one day and expects to save US$1.5 million over five years as the bank has automated loan origination and approval process to accelerate processing...
Provided by IBM
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Whitepapers
University College London Hospitals; UCLH implements a patient management system to meet government standards
Dec 2010
University College London Hospitals NHS Foundation Trust (UCLH), situated in the west end of London, is one of the largest NHS (National Health Service) trusts in the United Kingdom and provides...
Provided by IBM
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White Papers
Multi-Antenna Cognitive Radio for Broadband Access in 4G-WLANs
Oct 2007
This paper focuses on the competitively optimal power-control, signal-shaping and interference mitigation for wireless mesh networks composed by Multiple-Antenna noncooperative transmit terminals...
Provided by Association for Computing Machinery
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White Papers
Handover Prediction Strategy for 3G-WLAN Overlay Networks
Jul 2008
In 3G-WLAN overlay network environments; a UE is apt to lose the WLAN signal without any notice by moving while it connects to WLAN because it can be apart from the WLAN coverage suddenly. In this...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Autonomic Fault Management for Wireless Mesh Networks
Dec 2008
Wireless Mesh Network (WMN) provides a cheaper option for backhauls that can be leveraged to provide low-cost access services. Compared to conventional wireless LANs, the benefits of a WMN include...
Provided by University of Massachusetts
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White Papers
SplitAP: Leveraging Wireless Network Virtualization for Flexible Sharing of WLANs
Jul 2010
Providing air-time guarantees across a group of clients forms a fundamental building block in sharing an Access Point (AP) across different virtual network providers. Though this problem has a...
Provided by Rutgers University
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White Papers
A WiFi Measurement in 802.11g Networks
Feb 2010
The hidden terminal problem is closely related to the Transmission Range (TX Range), Carrier Sensing Range (CS Range) and InterFerence Range (IF Range) of stations in wireless local area networks...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Wireless Telemedicine Services Over Integrated IEEE 802.11/WLAN and IEEE 802.16/WiMAX Networks
Feb 2010
Wireless telemedicine, also referred to as mobile health, which capitalizes on advances of wireless technologies to deliver health care and exchange medical knowledge anywhere, and any time,...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
MDG: Measurement-Driven Guidelines for 802.11 WLAN Design
Sep 2007
Dense deployments of WLANs suffer from increased interference and as a result, reduced capacity. There are three main functions used to improve the overall network capacity: intelligent frequency...
Provided by Association for Computing Machinery
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White Papers
802.11a or HiperLAN2: Which Technology Will Emerge as the 5 GHz WLAN Standard?
Jan 2011
Wireless networks are becoming increasingly common in homes and businesses alike. Buyers have realized the convenience that cordless networks offer. Prices have plummeted recently opening up the...
Provided by University of Colorado at Boulder
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White Papers
Link-Layer Protection in 802.11i WLANs With Dummy Authentication
Mar 2009
The current 802.11i standard can provide data confidentiality, integrity and mutual authentication in enterprise Wireless Local Area Networks (WLANs). However, secure communication can only be...
Provided by Association for Computing Machinery
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White Papers
PEGASUS: 802.11 Connectivity at High Speed
Sep 2007
Measurements and ongoing research have shown that WLAN connection for moving vehicles is feasible. However none of the previous works suggests a solution addressing a complete array of the...
Provided by University of Maryland
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White Papers
Channel Assignment in an IEEE 802.11 WLAN Based on Signal-To-Interference Ratio
Dec 2007
This paper proposes a channel-assignment algorithm at the Access Points (APs) of a Wireless Local Area Network (WLAN) in order to maximize Signal-to-Interference Ratio (SIR) at the user level. The...
Provided by University of North Texas
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White Papers
Channel Assignment Schemes for Infrastructure-Based 802.11 WLANs: A Survey
Jan 2010
Efficient channel assignment is crucial for successful deployment and operation of IEEE 802.11-based WLANs. This paper presents a survey on the state of the art channel assignment schemes in IEEE...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Empirical Studies and Queuing Modeling of Denial of Service Attacks Against 802.11 WLANs
Nov 2009
The growing popularity of 802.11-based Wireless LANs (WLAN) also increases the risk of security attacks. Most studies of WLAN security are on the protection of data integrity, and few studies are...
Provided by DePaul University
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White Papers
Detecting Selfish Exploitation of Carrier Sensing in 802.11 Networks
May 2009
Recently, tuning the Clear Channel Assessment (CCA) threshold in conjunction with power control has been considered for improving the performance of Wireless LANs. However, CCA tuning can be...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Collision-Aware Design of Rate Adaptation for Multi-Rate 802.11 WLANs
Jun 2008
One of the key challenges in designing a rate adaptation scheme for IEEE 802.11 Wireless LANs (WLANs) is to differentiate bit errors from link-layer collisions. Many recent rate adaptation schemes...
Provided by Seoul National University
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Whitepapers
The Microstrip Fed Rectangular Microstrip Patch Antenna (RMPA) With Defected Ground Plane for HIPERLAN/1
Sep 2011
In this paper, the authors propose a design of Rectangular Microstrip Patch Antenna (RMPA). The glass epoxy substrate with height 1.6mm and the dielectric constant is 4.4 is used. The half...
Provided by University of Myongji
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Whitepapers
A Lightweight Indoor Localization Model Based on Motley-Keenan and COST
Jul 2012
This paper presents a novel approach to WLAN propagation models for use in indoor localization. The major goal of this work is to eliminate the need for in situ data collection to generate the...
Provided by International Association of Engineers
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Whitepapers
Wired and Wireless Parallel Simulation of Fluid Flow Problem on Heterogeneous Network Cluster
Sep 2012
In this paper, homogeneous and heterogeneous networks will be analyzed using parallel processing technique for highly sophisticated research problem. During the analysis sample networks will be...
Provided by International Journal of Computer Science Issues
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Whitepapers
Preventive Measures for MITM in 3G-WLAN Integrated System
Jul 2011
The 3G-WLAN integrated system provides communication with high bit rate and wide area coverage. On the other hand it is also susceptible to attack like non-repudiation, DoS, MITM etc. There can be...
Provided by International Journal of Engineering Research and Applications (IJERA)
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Whitepapers
Performance of VoIP in WLANs
Jul 2011
The WLAN is the rapidly growing technology used for communication today. Integration of VoIP is the current area of research that is very lucrative as it would reduce the communication cost to a...
Provided by International Journal of Engineering Research and Applications (IJERA)
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Whitepapers
Design and Implementation of CRC Code Generator Based on Parallel Execution Method for High Speed Wireless LAN
Sep 2011
In networking environments, the Cyclic Redundancy Check (CRC) is widely utilized to determine whether errors have been introduced during transmissions over physical links. In this paper, the...
Provided by International Journal of Engineering Research and Applications (IJERA)
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Whitepapers
Throughput Analysis of IEEE 802.11b Wireless LAN With One Access Point Using Opnet Simulator
Jul 2012
This paper analyzes the throughput performance of IEEE 802.11b Wireless Local Area Network (WLAN) with one access point. The IEEE 802.11b is a wireless protocol standard. In this paper, a wireless...
Provided by The Schwa
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Whitepapers
EBDP Buffer Sizing Strategy 802.11 Based WLANS
Oct 2012
In this paper, the authors present wired routers, for whom the sizing of buffers is an active research topic. The classical rule of thumb for sizing wired buffers is to set buffer sizes to be the...
Provided by Interscience Open Access Journals
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Whitepapers
Analysis of Complexity and Transaction Costs for Cooperating Networks
May 2010
In this paper, the authors investigate the impact that introduction of new Ambient Networks (AN) functionality will have on usage of system resources and on connection delay. The signalling load...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Issues and Evaluation considerations of web traffic for RIP & OSPF Dynamic Routing Protocols for Hybrid Networks Using OPNET
Sep 2012
In this paper, performance analysis of the Wireless and Wired computer networks for combination of conventional model of RIP and OSPF is evaluated through simulation which has been attempted using...
Provided by International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
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Whitepapers
A Novel Design of Broadband Patch Antenna With Various Slot Configurations for GSM/PCS/UMTS Mobile Cellular Phone
Jul 2012
The authors present a novel design of a compact, multi frequency, light weight, low cost patch antenna with versatile slot configurations for optimization and normalisation in GSM/PCS/UMTS/WLAN...
Provided by International Journal of Emerging Technology and Advanced Engineering (IJETAE)
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Whitepapers
Mutual Information Metrics for Fast Link Adaptation in IEEE 802.11n
Apr 2008
The authors investigate Link Quality Metrics (LQMs) based on Mutual Information (MI) for Fast Link Adaptation (FLA) in IEEE 802.11n Wireless Local Area Network (WLAN) with convolutional coding and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cooperative Precoding and Beamforming in Co-Working WLANs
Apr 2008
The interference among multiple Access Points (APs) that co-exist in the same location, limits the capacity of co-working Wireless Local Area Networks (WLANs). In this paper, the authors propose a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Implementation of WLAN WEP Protocol by RC4 Algorithm in VHDL
Aug 2012
The WLAN is a network that utilizes radio frequency technology. The security of wireless data stream becomes particularly prominent. The WLAN uses RC4 stream encryption algorithm of the WEP...
Provided by INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE & ADVANCED TECHNOLOGY
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Whitepapers
A Review on Strategies to Optimize and Enhance the Performance of WLAN and Wireless Networks
Jul 2007
WLAN is a type of local-area network that uses high-frequency radio waves rather than wires to communicate between nodes. A Mobile Ad-hoc NETwork (MANET), sometimes called a mobile mesh network,...
Provided by Science and Development Network (SciDev.Net)
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Whitepapers
Implementation of Vertical Handoff in Heterogeneous Networks
Sep 2012
Vertical HandOff (VHO) is a major concern for different heterogeneous networks. VHO can be user requested or based on some criteria already designed by the researcher of that particular algorithm....
Provided by Science and Development Network (SciDev.Net)
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Whitepapers
Energy-Adaptive Scheduling and Queue Management in Wireless LAN Mesh Networks
Apr 2010
Energy efficiency is of critical importance in future wireless communication systems where networked low-power devices relying on batteries should be able to communicate transparently. The authors...
Provided by Helsinki University of Technology
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Whitepapers
Inclined Slot Loaded Proximity-Coupled Microstrip Antenna for WLAN
May 2012
The design of a miniaturized Proximity-Coupled Microstrip Antenna (PCMA) is presented here. The antenna has very small size, wide bandwidth and moderate gain and may be used as small, compact...
Provided by The Interscience Research Network (IRNet)
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Whitepapers
Continuous Polling With Rerouting and Applications to Ferry Assisted Wireless LANs
May 2011
In almost all studied continuous polling systems, the user leaves the system after his service is completed. There are interesting applications, in which the users demand a second service (or...
Provided by ICST
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Whitepapers
Multi-Mode, Multi-Band Spectrum Sensor for Cognitive Radios Embedded to a Mobile Phone
Jun 2011
Localized spectrum sensing is an alternate for database centric approaches to solve secondary use of spectrum in cognitive radios. This can be carried out by using collaborative spectrum sensing...
Provided by ICST
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Whitepapers
Performance Evaluation of BICM - OFDM Systems Impaired by UWB Interference
Apr 2008
In this paper, the authors propose a theoretical framework for the analysis of the impact of Ultra - WideBand (UWB) interference on systems that use the popular combination of Bit - Interleaved...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Power Allocation for Goodput Optimization in BICM-OFDM Systems
Apr 2008
This paper deals with the power allocation problem for coded multicarrier transmission. Specifically, the authors focus on a Bit Interleaved Coded Modulation (BICM) packet transmission implemented...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cognitive WSN Transmission Control for Energy Efficiency Under WLAN Coexistence
Jun 2011
In this paper, the authors design a cognitive access scheme for WSNs that coexist with WLANs, considering the problem of blind and hidden WLAN terminals. The cognitive access scheme relies on...
Provided by ICST
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Whitepapers
Proposal of Heterogeneous Wireless Communication Network With Soft Handover in Application Layer: Feasibility Study Based on Field Trial Results
Jun 2011
This paper proposes a heterogeneous wireless communication network with soft handover in the application layer. The proposed network requires no upgrades of wireless infrastructure and mobile...
Provided by ICST
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Whitepapers
Distributed Channel Assignment Algorithm Based on Simulated Annealing for Uncoordinated OSA-Enabled WLANs
Jun 2011
A promising approach to alleviate ISM band congestion problems in highly dense WLAN scenarios consists of exploiting Opportunistic Spectrum Access (OSA) to underutilized bands under a...
Provided by ICST
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Whitepapers
Aggregate Interference From WLAN in the TV White Space by Using Terrain-Based Channel Model
Jun 2012
In this paper, the authors model the TV white space usage by a WLAN type secondary network. They derive a model that incorporates spatially non-uniform distributed user demand and terrain-based...
Provided by ICST
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Whitepapers
Coexistence-Aware Scheduling for LTE and WLAN During Hard In-Device Interference
Jun 2012
In-device interference of concurrently active radios can cause significant performance degradation in small devices such as smart phones. To avoid interference-related conflicts under challenging...
Provided by ICST
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Whitepapers
A Dynamic IEEE 802.11e TXOP Scheme in WLANs Under Self-Similar Traffic: Performance Enhancement and Analysis
Apr 2008
Transmission Opportunity (TXOP) is a new scheme specified in the IEEE 802.11e standard which enables a station to transmit multiple frames consecutively within a burst after it gains the channel....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Supporting Service Differentiation and Maximizing System Saturation Throughput: A Contradictory in IEEE 802.11e WLAN
Apr 2008
While most existing work focuses separately on how to improve WLAN saturation throughout and how to provide differentiated service, few attention is put to study their relationship. In this paper,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
PigWin: Meaningful Load Estimation in IEEE 802.11 Based Wireless LANs
Apr 2008
In this paper, the authors propose a novel definition of the term load, which overcomes the weaknesses of traditional metrics for measuring load. They then present PigWin, which is a load...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An Asynchronous Distributed Dynamic Channel Assignment Scheme for Dense WLANs
Apr 2008
Wireless Local Area Networks (WLANs) have changed the way many of them communicate, work, play and live. Due to its popularity, dense deployments are becoming a norm in many cities around the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Weighted Fair Uplink/Downlink Access Provisioning in IEEE 802.11e WLANs
Apr 2008
The authors present the unfairness problem between the uplink and the downlink flows in the IEEE 802.11e infrastructure Basic Service Set (BSS) when the default settings of the Enhanced...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Hop-by-Hop Frame Aggregation for VoIP on Multi-Hop Wireless Networks
Apr 2008
The already severe inefficiency problem in running VoIP on the IEEE 802.11-based wireless LAN is exacerbated in multi-hop networks due to spatial interference. This paper presents a novel scheme...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cooperative Protocols for Random Access Networks
Jan 2009
Cooperative communications have emerged as a significant concept to improve reliability and throughput in wireless systems. On the other hand, WLANs based on random access mechanism have become...
Provided by RWSoftware
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Whitepapers
An Efficient Scanning Group and Order Decision Method Using Neighbor Network Information in Wireless LAN
Sep 2009
In the IEEE 802.11 WLAN, a Mobile Station (MS) performs a handover whenever it moves out of range of one Access Point (AP). However, channel scanning which discovers the new available APs is the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Adaptive Wireless Bandwidth Allocation for Per-Station Fairness
Sep 2009
In IEEE 802.11 wireless LAN, the bandwidth cannot be fairly allocated among stations. To resolve this problem, the authors propose a novel adaptive wireless bandwidth allocation for per-station...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Comparison of 802.11n System With WLAN Channel Model
Sep 2009
As the demand of high quality service in next generation wireless communication systems, a high performance of data transmission requires an increase of spectrum efficiency and an improvement of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Time-Correlated Fading Can Mitigate Rate Anomaly in IEEE 802.11 WLANs
Sep 2009
It is well known that rate anomaly may occur when more than two stations communicating with an AP use different data rates in IEEE 802.11 WLANs. This statement may be valid based on the assumption...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
RTL Design of 1.2Gbps MIMO WLAN System and Its Business Aspect
Sep 2009
This paper deals with the development of 1.2 Gbps MIMO wireless LAN system based on IEEE802.11TGac's functional requirements. It reaches 33 meter propagation distance by using 80MHz of bandwidth...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Analysis of Multi User MIMO System With CDD for 802.11n Applications
Sep 2009
As the demand of high quality service in next generation wireless communication systems, a high performance of data transmission requires an increase of spectrum efficiency and an improvement of...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Channel Assignment Schemes for Infrastructure-Based 802.11 WLANs: A Survey
Jan 2010
Efficient channel assignment is crucial for successful deployment and operation of IEEE 802.11-based WLANs. This paper presents a survey on the state of the art channel assignment schemes in IEEE...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Empirical Studies and Queuing Modeling of Denial of Service Attacks Against 802.11 WLANs
Nov 2009
The growing popularity of 802.11-based Wireless LANs (WLAN) also increases the risk of security attacks. Most studies of WLAN security are on the protection of data integrity, and few studies are...
Provided by DePaul University
-
White Papers
Detecting Selfish Exploitation of Carrier Sensing in 802.11 Networks
May 2009
Recently, tuning the Clear Channel Assessment (CCA) threshold in conjunction with power control has been considered for improving the performance of Wireless LANs. However, CCA tuning can be...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Collision-Aware Design of Rate Adaptation for Multi-Rate 802.11 WLANs
Jun 2008
One of the key challenges in designing a rate adaptation scheme for IEEE 802.11 Wireless LANs (WLANs) is to differentiate bit errors from link-layer collisions. Many recent rate adaptation schemes...
Provided by Seoul National University
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White Papers
Measurement-Driven Guidelines for 802.11 WLAN Design
Jan 2010
Dense deployments of WLANs suffer from increased interference and, as a result, reduced capacity. There are three main functions used to improve the overall network capacity: intelligent frequency...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
On Security Vulnerabilities of Null Data Frames in IEEE 802.11 Based WLANs
Mar 2008
Null data frames are a special but important type of frames in IEEE 802.11 based Wireless Local Area Networks (E.g., 802.11 WLANs). They are widely used for power management, channel scanning and...
Provided by City University of Hong Kong
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White Papers
Symphony: Synchronous Two-Phase Rate and Power Control in 802.11 WLANs
Jun 2008
Adaptive transmit power control in 802.11 Wireless LANs (WLANs) on a per-link basis helps increase network capacity and improves battery life of Wi-Fi enabled mobile devices. However, it faces the...
Provided by Association for Computing Machinery
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White Papers
Opportunistic Use of Client Repeaters to Improve Performance of WLANs
Dec 2008
Currently deployed IEEE 802.11WLANs (Wi-Fi Networks) share Access Point (AP) bandwidth on a per-packet basis. However, the various stations communicating with the AP often have different signal...
Provided by Association for Computing Machinery
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White Papers
A Fully Integrated Multiband Frequency Synthesizer for WLAN and WiMAX Applications
Sep 2010
This paper presents a fractional N frequency synthesizer which covers WLAN and WiMAX frequencies on a single chip. The synthesizer is fully integrated in 0.35ìm BiCMOS AMS technology except...
Provided by EUMA - European Management Assistants
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White Papers
ZipTx: Harnessing Partial Packets in 802.11 Networks
Sep 2008
Current wireless protocols retransmit packets that fail the checksum test, even when most of the bits are correctly received. Prior work has recognized this inefficiency; however, the proposed...
Provided by Association for Computing Machinery
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White Papers
Turning Hidden Nodes Into Helper Nodes in IEEE 802.11 Wireless LAN Networks
May 2008
To enhance the performance of IEEE 802.11 WLANs in the presence of hidden terminal problem, the authors proposes a protocol that allows non-hidden stations to help each other retransmit faster...
Provided by IFIP
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Whitepapers
Speeding Up File Transfers in Windows 7
Jan 2011
File transfers in Windows involve many factors, any one of which can present problems. In a typical Windows network with a mix of clients and servers, file transfer performance can vary wildly....
Provided by Global Knowledge
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White Papers
Physical Layer Attacks on Unlinkability in Wireless LANs
Jul 2009
Recent work has focused on hiding explicit network identifiers such as hardware addresses from the link layer to enable anonymous communications in wireless LANs. These protocols encrypt entire...
Provided by University of Colorado
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White Papers
SAM: Enabling Practical Spatial Multiple Access in Wireless LAN
Sep 2009
Spatial multiple access holds the promise to boost the capacity of wireless networks when an access point has multiple antennas. Due to the asynchronous and uncontrolled nature of wireless LANs,...
Provided by Association for Computing Machinery
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White Papers
Can You Afford Not to Manage Mobile? How to Generate Immediate Savings from Mobile Spend
Jan 2011
According to predictions made by BoxTone in a 2010 press release, "Device and mobile delivery platform diversity will continue to expand, with most organizations moving from one mobile platform...
Provided by ProfitLine
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White Papers
5 Key strategies to manage the cultural impacts of mobility management
Jan 2011
The bottom line is that successful wireless management requires a cultural shift. The good news? Cultural challenge doesn't have to be a roadblock! With a good strategy and implementation plan,...
Provided by ProfitLine
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White Papers
CENTAUR: Realizing the Full Potential of Centralized WLANs Through a Hybrid Data Path
Sep 2009
Enterprise WLANs have made a dramatic shift towards centralized architectures in the recent past. The reasons for such a change have been ease of management and better design of various control...
Provided by Association for Computing Machinery
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White Papers
Traffic-Aware Channel Assignment in Enterprise Wireless LANs
Sep 2007
Campus and enterprise wireless networks are increasingly characterized by ubiquitous coverage and rising traffic demands. Efficiently assigning channels to Access Points (APs) in these networks...
Provided by University of Wisconsin
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White Papers
Loss-Aware Network Coding for Unicast Wireless Sessions: Design, Implementation, and Performance Evaluation
Jun 2008
Local network coding is growing in prominence as a technique to facilitate greater capacity utilization in multi-hop wireless networks. A specific objective of such local network coding techniques...
Provided by Association for Computing Machinery
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White Papers
Error Bound of Collision Probability Estimation in Non-Saturated IEEE 802.11 WLANs
Jul 2007
The authors analytically prove that the error in the channel idle time-based collision probability estimation in face of non-saturated stations is bounded by 2/(CWmin+1) in the IEEE 802.11...
Provided by Institute of Electronics, Information and Communication Engineers
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White Papers
Channel Allocation and Routing in Wireless Mesh Networks: A Survey and Qualitative Comparison Between Schemes
Feb 2010
In order to avoid transmission's collisions and improve network performances in Wireless Mesh Networks (WMNs), a reliable and efficient Medium Access Control (MAC) protocol and a good channel...
Provided by AIRCC
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White Papers
Impact of Interfering Bluetooth Piconets on a Collocated p-Persistent CSMA-Based WLAN
Jun 2009
In this paper, the effect of co-channeled BlueTooth (BT) piconets on a Carrier Sense Multiple Access (CSMA)-based Wireless Local Area Network (WLAN) is investigated. Specifically, the p-persistent...
Provided by Bell Labs
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White Papers
Enhancing QoS for Streaming Video Over WLANs
Oct 2008
Recent times have seen a tremendous surge of multimedia traffic over the Wireless Local Area Networks or WLANs. However, the bandwidth intensive multimedia traffic takes the most brunt when a WLAN...
Provided by San Diego State University
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White Papers
Voice Over IP: Improving the Quality Over Wireless LAN by Adopting a Booster Mechanism
Nov 2007
The performance of unreliable voice transmission (Voice over IP) over wireless links is measured not by the throughput but by the perceptual speech quality. The speech quality is impaired by...
Provided by Technische Universität Berlin
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White Papers
Wireless Mesh Networks
Sep 2008
Wireless telemedicine using GSM and GPRS technologies can only provide low bandwidth connections, which makes it difficult to transmit images and video. Satellite or 3G wireless transmission...
Provided by Swansea University
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White Papers
A Survey on Voice Over IP Over Wireless LANs
Dec 2010
Voice over Internet Protocol (VoIP) is a form of voice communication that uses audio data to transmit voice signals to the end user. VoIP is one of the most important technologies in the World of...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Cryptanalysis of Two-Factor Authenticated Key Exchange Protocol in Public Wireless LANs
Dec 2009
In Public Wireless LANs (PWLANs), user anonymity is an essential issue. Recently, Juang et al. proposed an anonymous authentication and key exchange protocol using smart cards in PWLANs. They...
Provided by Sungkyunkwan University
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White Papers
VoIP and Database Traffic Co-Existence Over IEEE 802.11b WLAN With Redundancy
Jun 2009
This paper presents the findings of two experiments that were performed on the Redundancy in Wireless Connection Model (RiWC) using the 802.11b standard. The experiments were simulated using OPNET...
Provided by World Academy of Science, Engineering and Technology
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White Papers
A Reliable Peer-to-Peer Protocol for Mobile Ad-Hoc Wireless Networks
Nov 2010
Reliable, fast, and power aware communication is needed for Ad-Hoc wireless networks. Current techniques based on client-server and Publish/Subscribe communication models are not suitable in...
Provided by King Fahd University of Petroleum & Minerals
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White Papers
Reliable Multicast Mechanism in WLAN With Extended Implicit MAC Acknowledgment
Feb 2010
In this paper, the authors study reliable multicast at the MAC layer for IEEE 802.11 Wireless LANs. In IEEE 802.11, multicast protocol is based on the basic access procedure of Carrier Sense...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Adaptive FEC Reliable Multicast MAC Protocol for WLANs
Jun 2007
For end-to-end wireless multicast applications like multimedia conferencing, voice over IP and video/audio streaming applications which require reliable transmission of frames within short...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Converged Charging Framework for Mobile Voice and Data Applications
Sep 2009
The evolution of an integrated mobile communication environment enables service deployment and content delivery offered by independent providers through heterogeneous network infrastructures. In a...
Provided by Academy Publisher
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White Papers
Network-Initiated Terminal Mobility in Voice Over 3GPP-WLAN
Feb 2008
This paper proposes a Network-Initiated Terminal Mobility mechanism (NITM) to facilitate handover with the Session Initiation Protocol (SIP) in 3GPP Voice over WLAN (3GPP VoWLAN). The authors...
Provided by National Chung Cheng University
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White Papers
Network Design for Quality of Services in Wireless Local Area Networks: A Cross-Layer Approach for Optimal Access Point Placement and Frequency Channel Assignment
Jul 2007
This paper presents a novel network design algorithm for Wireless Local Area Networks (WLANs) considering optimal access point placement and frequency channel assignment problems. The proposed...
Provided by Suranaree University of Technology
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White Papers
Denoising by Spatial Domain Averaging for Wireless Local Area Network Terminal Localization
Nov 2010
Terminal localization for indoor Wireless Local Area Networks (WLANs) is critical for the deployment of location-aware computing inside of buildings. A major challenge is obtaining high...
Provided by University of Victoria
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White Papers
Weaknesses and Strengths Analysis Over Wireless Network Security Standards
Dec 2010
Several wireless networks security standards have been proposed and widely implemented in both business and home environments in order to protect the network from unauthorized access. However, the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Hybrid Association Control Scheme and Load Balancing in Wireless LANs
Jun 2008
This paper presents a hybrid association control scheme that can maintain load balancing among access points in the wireless LANs and can satisfy the quality of service requirements of the...
Provided by Suranaree University of Technology
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White Papers
Wireless Network Visualization and Indoor Empirical Propagation Model for a Campus WI-FI Network
Jun 2009
With the increasing use of mobile computing devices such as PDAs, laptops, and an expansion of Wireless Local Area Networks (WLAN), there is growing interest in optimizing the WLAN infrastructure...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Sequential Authentication Concept to Improve WLAN Handover Performance
Sep 2009
Service provisioning in customer satisfying quality is an important issue for current and future network operators. Real-time services suffer from network performance influences, e.g. delay,...
Provided by Springer Science+Business Media
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White Papers
CSMA Self-Adaptation Based on Interference Differentiation
Jul 2009
This paper addresses the design challenge of interference mitigation in the emerging High Density (HD) wireless LAN. It is proposed to differentiate interference according to the energy and timing...
Provided by University of Washington
