- Subscribe to this page:
- RSS
- Email Alert
wireless lan
(1553 results)-
White Papers
Multiple-Antenna Interference Cancellation for WLAN With MAC Interference Avoidance in Open Access Networks
Sep 2007
The potential of multi-antenna interference cancellation receiver algorithms for increasing the uplink throughput in WLAN systems such as 802.11 is investigated. The Medium Access Control (MAC) in...
Provided by Bell
-
White Papers
Modified Isochronous Coordination Function for Enhancement of VoIP Call Capacity Over IEEE 802.11 WLAN
Oct 2007
VoIP over IEEE 802.11 Wireless Local Area Network (WLAN) is growing very fast and is providing a cost effective alternative for voice communications. WLANs were initially set up to handle bursty...
Provided by Hindawi Publishing
-
White Papers
Energy-Efficient Bandwidth Allocation for Multiuser Scalable Video Streaming Over WLAN
Oct 2007
The authors consider the problem of packet scheduling for the transmission of multiple video streams over a Wireless Local Area Network (WLAN). A cross-layer optimization framework is proposed to...
Provided by Hindawi Publishing
-
White Papers
Distortion-Based Link Adaptation for Wireless Video Transmission
Mar 2008
Wireless Local Area Networks (WLANs) such as IEEE 802.11a/g utilise numerous transmission modes, each providing different throughputs and reliability levels. Most link adaptation algorithms...
Provided by Hindawi Publishing
-
White Papers
Efficient MAC Protocol for Subcarrier-Wise Rate Adaptation Over WLAN
May 2010
While bit-loading algorithms over wireless systems have been extensively studied, the development of a protocol which implements bit-loading-based rate adaptation over wireless systems has not...
Provided by Hindawi Publishing
-
White Papers
Cost-Based Vertical Handover Decision Algorithm for WWAN/WLAN Integrated Networks
May 2009
Next generation wireless communications are expected to rely on integrated networks consisting of multiple wireless technologies. Heterogeneous networks based on Wireless Local Area Networks...
Provided by Hindawi Publishing
-
White Papers
Secure and Efficient Data Transmission Over Body Sensor and Wireless Networks
Feb 2008
This paper addresses the transmission of medical and context-aware data from mobile patients to healthcare centers over heterogeneous wireless networks. A handheld device, called Personal Wireless...
Provided by Hindawi Publishing
-
White Papers
Techniques for Improving the Accuracy of 802.11 WLAN-Based Networking Experimentation
Dec 2009
Wireless networking experimentation research has become highly popular due to both the frequent mismatch between theory and practice and the widespread availability of low-cost WLAN cards....
Provided by Hindawi Publishing
-
White Papers
Linking Users' Subjective QoE Evaluation to Signal Strength in an IEEE 802.11b/g Wireless LAN Environment
Feb 2010
Although the literature on Quality of Experience (QoE) has boomed over the last few years, only a limited number of studies have focused on the relation between objective technical parameters and...
Provided by Hindawi Publishing
-
White Papers
Experimental Validation of a Coexistence Model of IEEE 802.15.4 and IEEE 802.11b/g Networks
May 2009
As IEEE 802.15.4 Wireless Sensor Networks (WSNs) and IEEE 802.11b/g Wireless Local Area Networks (WLANs) are often collocated, coexistence issues arise as these networks share the same 2.4GHz...
Provided by Hindawi Publishing
-
White Papers
Weighted Window and Class-Based Weighted Window Methods for Per-Station TCP Fairness in IEEE 802.11 WLANs
Oct 2010
TCP unfairness problem in access networks using the 802.11 has been studied by many researchers. Their solutions required that the existing MAC protocol be modified. However, since they did not...
Provided by Hindawi Publishing
-
White Papers
Hybrid Polling Method for Direct Link Communication for IEEE 802.11 Wireless LANs
Aug 2008
The direct link communication between STAtions (STAs) is one of the techniques to improve the MAC performance of IEEE 802.11 infrastructure networks. For the efficient direct link communication,...
Provided by Hindawi Publishing
-
White Papers
Cross-Layer Measurement on an IEEE 802.11g Wireless Network Supporting MPEG-2 Video Streaming Applications in the Presence of Interference
Jan 2010
The performance of wireless local area networks supporting video streaming applications, based on MPEG-2 video codec, in the presence of interference is here dealt with. IEEE 802.11g standard...
Provided by Hindawi Publishing
-
White Papers
RSS Based Vertical Handoff Algorithms for Heterogeneous Wireless Networks - A Review
Aug 2011
Heterogeneous networks are integrated in fourth generation. To have seamless communication and mobility between these heterogeneous wireless access networks, support of vertical handoff is...
Provided by The Science and Information Organization
-
White Papers
IEEE 802.11n Outdoor Performance
Sep 2009
The MIMO (Multiple Input, Multiple Output) technology described in the IEEE 802.11n standard transforms the disadvantages of multipath propagation in wireless LAN transmissions into an advantage...
Provided by LANCOM Systems
-
White Papers
Albert School District: A Customer Success Story
Dec 2011
Albert School District gets a lesson in wireless security; Sophos Astaro Wireless Security provides simple management and reliable Internet access.
Provided by Astaro
-
White Papers
Global Frontrunner Routing Algorithm (GFRA) for V2V Communication in VANETS
Jul 2011
VANET (Vehicular Ad hoc NETwork) is the emerging research area that making the phrase "Network on Wheel" true. In this new age network the basic WLAN (IEEE 802.11) standard is used. As the...
Provided by Kalasalingam University
-
White Papers
Interference-Aware Topology Control for Wireless Personal Area Networks
Oct 2008
Recently, many wireless devices operate in the 2.4GHz ISM band. Wireless Personal Area Network (WPAN) can suffer significant performance degradation due to the interference of WLAN and Bluetooth....
Provided by Konkuk University
-
Case Studies
The Goodyear Tire & Rubber Company Uses WildPackets' OmniPeek
Jan 2008
Goodyear manufactures tires, engineered rubber products and chemicals in more than 80 facilities in 28 countries. The company wanted to consolidate its set of network monitoring, analysis, and...
Provided by WildPackets
-
White Papers
Asynchronous Co-Channel Interference Suppression in MIMO OFDM Systems
Jun 2007
The authors present algorithms to suppress the asynchronous Co-Channel Interference (CCI) in MIMO OFDM systems, which is becoming the dominant limiting factor in the performance of the emerging...
Provided by Institute of Electrical and Electronics Engineers
-
Case Studies
Regional Retail Chain Implements a Secure Wireless Solution From TierPoint to Provide Security and Simplicity
Aug 2011
Plaid Pantry, is a retail chain with stores. They needed a regionally-based convenience store chain, wanted to implement a business-class WLAN and ensure PCI compliance over their wireless...
Provided by TierPoint
-
White Papers
SCAP: Smart Caching in Wireless Access Points to Improve P2P Streaming
Jul 2007
The increasing number of wireless users in Internet P2P applications causes two new performance problems due to the requirement of uploading the downloaded traffic for other peers, limited...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Cross-Network Cooperation Paradigms Supporting Co-Located Heterogeneous Wireless Networks
Sep 2009
Wireless services and wireless devices have become an important part of the people daily life. However, as the number of wireless devices increases, so does the density of co-located devices in...
Provided by Ghent University
-
Whitepapers
System x Performance Benchmarks
Jan 2012
Learn about IBM System x performance benchmarks.
Provided by IBM
-
White Papers
Location-And Time-Dependent VPD for Privacy-Preserving Wireless Accesses to Cloud Services
Nov 2011
The advent of Smartphones in recent years has changed the wireless landscape. Smartphones have become a platform for online user interface to cloud databases. Cloud databases may provide a large...
Provided by Mercy College
-
White Papers
Multimedia Transmission over Emerging Wireless Technologies
Jan 2008
The efficient delivery of multimedia applications and services over emerging diverse and heterogeneous wireless networks (e.g., 2.5G/3G/4G, Wi-Max, WLANs, PANs, ad hoc, etc.) is a challenging...
Provided by Hindawi Publishing
-
White Papers
WLAN Technologies for Audio Delivery
Dec 2007
Audio delivery and reproduction for home or professional applications may greatly benefit from the adoption of digital Wireless Local Area Network (WLAN) technologies. The most challenging aspect...
Provided by Hindawi Publishing
-
White Papers
Impact of Background Traffic on Speech Quality in VoWLAN
Jul 2007
This paper describes measurements of the impact of background traffic on speech quality in an environment of WLANs (IEEE 802.11). The simulated background traffic consists of three types of...
Provided by Hindawi Publishing
-
White Papers
MAC-Layer QoS Management for Streaming Rate-Adaptive VBR Video over IEEE 802.11e HCCA WLANs
Jun 2007
With the increasing popularity of using WLANs for Internet access, the HCCA mechanism in IEEE 802.11e WLANs has received much more attention due to its efficiency in handling time-bounded...
Provided by Hindawi Publishing
-
White Papers
A Cross-Layer Location-Based Approach for Mobile-Controlled Connectivity
Dec 2010
The authors investigate into the potentiality of an enhanced Power and Location-Based Vertical HandOver (PLB-VHO) approach, based on a combination of physical parameters (i.e., location and power...
Provided by Hindawi Publishing
-
White Papers
Low-Cost Transceiver Architectures for 60 GHz Ultra Wideband WLANs
Feb 2009
Millimeter-wave multi-port transceiver architectures dedicated to 60 GHz UWB short-range communications are proposed in this paper. Multi-port circuits based on 90 degree¦ hybrid couplers are...
Provided by Hindawi Publishing
-
White Papers
A Solution to WLAN Authentication and Association DoS Attacks
Aug 2007
The growing popularity of the 802.11-based Wireless LAN (WLAN) also increases its risk of security attacks. The new WLAN security standard, 802.11i, addresses most issues on user authentication...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Dual-Band MIMO Antenna with Lower Correlation Coefficient
Sep 2011
This paper demonstrates a novel dual-band operated MIMO antenna which consisted of planar monopole (main antenna) and 3D slot element (auxiliary antenna). The main antenna is printed on a 1.6mm...
Provided by Hindawi Publishing
-
White Papers
Dynamic Range Consideration in MIMO Systems with Hybrid Antenna Selection
Jun 2011
A Hybrid Antenna Selection (HAS), also called Soft Antenna Selection (SAS), method is basically implemented by a Linear Network (LN) located in RF domain of Multiple Input Multiple Output (MIMO)...
Provided by Hindawi Publishing
-
White Papers
Mutual Coupling Effects on Pattern Diversity Antennas for MIMO Femtocells
Apr 2010
Diversity antennas play an important role in wireless communications. However, mutual coupling between multiple ports of a diversity antenna has significant effects on wireless radio links and...
Provided by Hindawi Publishing
-
White Papers
A Multiband Diversity Antenna System for Compact Mobile/Wireless Devices: Modeling and Performance Evaluation
Dec 2007
A novel compact multiband diversity antenna system appropriate for integration onto space-limited devices is presented. It comprises three pairs of printed fractal Minkowski and Koch monopole...
Provided by Hindawi Publishing
-
White Papers
Location Privacy Protection From RSS Localization System Using Antenna Pattern Synthesis
Mar 2011
This paper studies the problem of location privacy protection in Wireless LAN (WLAN) environment, where Received Signal Strength (RSS) at Access Points (AP) can potentially be obtained by...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Real-Time Communications for Wireless Sensor Networks: A Two-Tiered Architecture
Nov 2009
While many approaches have been proposed to deal with energy/latency trade-offs, they are likely to be insufficient for the applications where reduced delay guarantee is the main concern. In this...
Provided by Taylor & Francis Group
-
White Papers
New Channel Assignment Method for Access Points in Wireless LANs
Nov 2011
Wireless LANs topology communicates using radio frequencies. The number of these frequencies is limited and not enough to assign a special frequency for each Access Point, this means that the...
Provided by International Journal of Computer Science Issues
-
White Papers
Latin Square Based Channel Access Scheduling in Large-Scale WLAN Systems
Jan 2011
WLAN systems based on the IEEE 802.11 could contain hundreds even up to thousands of wireless access points nowadays. However, IEEE 802.11 MAC protocols, including DCF, PCF and EDCA mechanisms,...
Provided by University of California
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Whitepapers
3 Keys to Increasing Project Efficiency
Dec 2010
Project teams are doing more with less-less time, fewer resources, and less compensation. However, working harder and working longer is not a long-term solution to increase productivity-it is just...
Provided by AtTask
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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)
-
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
-
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...
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
White Papers
Application of IEC 80001 in Avoiding Pitfalls of Wireless LAN System Design
Jun 2009
Every Wireless LAN (WLAN) network provider has white papers describing best practices for configuration of their equipment in hopes of ensuring the WLAN performance meets customer expectations....
Provided by Association for Computing Machinery
-
White Papers
Deploying Secure Wireless Network Services: The Avaya Identity Engines Portfolio Offers Flexible, Auditable Management for Secure Wireless Networks
Jun 2010
Deploying a secure, authenticated wireless network is a business challenge that has to balance user flexibility with security. The Avaya Identity Engines portfolio of network identity management...
Provided by Avaya
-
Whitepapers
End-to-End Performance Analysis and Simulation of Wireless LANs Interconnected by WDM Optical Backbone
Jan 2010
The present work deals with end-to-end network performance analysis and simulation of hierarchical network formed by interconnection of Wireless Local Area Networks (WLANs) by wavelength-division...
Provided by Hewlett-Packard (HP)
-
Whitepapers
Improving the Performance of Distance-Vector Routing Protocols
Oct 2010
This white paper examines techniques for improving the performance of Distance-Vector (D- V) routing protocols, including some techniques used with D-V protocols to solve the looping problem, and...
Provided by Global Knowledge
-
Whitepapers
Enterprise Wireless Competitive Performance Test Results
Mar 2010
Today's enterprises face a choice when selecting a vendor of wireless LAN infrastructure for their organization. While there are many vendors to choose from, not all possess the expertise in both...
Provided by Cisco
-
Whitepapers
Mobile Access Indoor Wireless Solution and Cisco WLANs
Sep 2010
The purpose of the paper is to show that the Mobile Access access pod and the Cisco Aironet access point can share the same Cisco WLAN infrastructure including the CAT-5e/6 cable run while each...
Provided by Cisco
-
White Papers
Centralized/Infrastructure Spectral Assurance: Evaluating Total Cost of Ownership
Apr 2010
There is no doubt in the mind, based on years of experience in planning, installing, and troubleshooting wireless LAN installations, that spectral assurance is a required element in any...
Provided by Farpoint Group
-
Downloads
ESG whitepaper: IBM Information Infrastructure Initiative Tames the Information Explosion
Oct 2010
The IBM Information Infrastructure initiative is a new and vitally important pillar supporting the firm‟s Dynamic Infrastructure: Helping Build a Smarter Planet agenda as it enables...
Provided by IBM
-
White Papers
Localization and Clock Synchronization Need Similar Hardware Support in Wireless LANs
Aug 2008
Secure localization protocols enable a group of cooperating verifier nodes in a wireless LAN to determine the physical location of a stranger called the prover, using precision timing measurements...
Provided by University of California
-
White Papers
A Solution to WLAN Authentication and Association DoS Attacks
Aug 2007
The growing popularity of the 802.11-based Wireless LAN (WLAN) also increases its risk of security attacks. The new WLAN security standard, 802.11i, addresses most issues on user authentication...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Dual-Band MIMO Antenna with Lower Correlation Coefficient
Sep 2011
This paper demonstrates a novel dual-band operated MIMO antenna which consisted of planar monopole (main antenna) and 3D slot element (auxiliary antenna). The main antenna is printed on a 1.6mm...
Provided by Hindawi Publishing
-
White Papers
Dynamic Range Consideration in MIMO Systems with Hybrid Antenna Selection
Jun 2011
A Hybrid Antenna Selection (HAS), also called Soft Antenna Selection (SAS), method is basically implemented by a Linear Network (LN) located in RF domain of Multiple Input Multiple Output (MIMO)...
Provided by Hindawi Publishing
-
White Papers
Mutual Coupling Effects on Pattern Diversity Antennas for MIMO Femtocells
Apr 2010
Diversity antennas play an important role in wireless communications. However, mutual coupling between multiple ports of a diversity antenna has significant effects on wireless radio links and...
Provided by Hindawi Publishing
-
White Papers
A Multiband Diversity Antenna System for Compact Mobile/Wireless Devices: Modeling and Performance Evaluation
Dec 2007
A novel compact multiband diversity antenna system appropriate for integration onto space-limited devices is presented. It comprises three pairs of printed fractal Minkowski and Koch monopole...
Provided by Hindawi Publishing
-
White Papers
Location Privacy Protection From RSS Localization System Using Antenna Pattern Synthesis
Mar 2011
This paper studies the problem of location privacy protection in Wireless LAN (WLAN) environment, where Received Signal Strength (RSS) at Access Points (AP) can potentially be obtained by...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Real-Time Communications for Wireless Sensor Networks: A Two-Tiered Architecture
Nov 2009
While many approaches have been proposed to deal with energy/latency trade-offs, they are likely to be insufficient for the applications where reduced delay guarantee is the main concern. In this...
Provided by Taylor & Francis Group
-
White Papers
New Channel Assignment Method for Access Points in Wireless LANs
Nov 2011
Wireless LANs topology communicates using radio frequencies. The number of these frequencies is limited and not enough to assign a special frequency for each Access Point, this means that the...
Provided by International Journal of Computer Science Issues
-
White Papers
Latin Square Based Channel Access Scheduling in Large-Scale WLAN Systems
Jan 2011
WLAN systems based on the IEEE 802.11 could contain hundreds even up to thousands of wireless access points nowadays. However, IEEE 802.11 MAC protocols, including DCF, PCF and EDCA mechanisms,...
Provided by University of California
-
White Papers
Cross-Layer Network Design for Quality of Services in Wireless Local Area Networks: Optimal Access Point Placement and Frequency Channel Assignment
Feb 2008
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
-
White Papers
Spatio-Temporal Modeling of Wireless Users Internet Access Patterns Using Self-Organizing Maps
Mar 2011
Users behavior and interests will play a central role in future mobile networks. They introduce a systematic method for large-scale multi-dimensional analysis of online activity for thousands of...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
The VPQ Scheduler in Access Point for Voip Over WLAN
Dec 2011
The Voice over Internet Protocol (VoIP) application has observed the fastest growth in the world of telecommunication. VoIP is seen as a short-term and long-trem transmission for voice and audio...
Provided by Universiti Utara Malaysia
-
White Papers
Securing IEEE 802.11g WLAN Using OpenVPN and its Impact Analysis
Nov 2011
Like most advances, wireless LAN poses both opportunities and risks. The evolution of wireless networking in recent years has raised many serious security issues. These security issues are of...
Provided by Academy & Industry Research Collaboration Center
-
White Papers
Predictability of WLAN Mobility and Its Effects on Bandwidth Provisioning
Jan 2008
Wireless Local Area Networks (WLANs) are emerging as a popular technology for access to the Internet and enterprise networks. In the long term, the success of WLANs depends on services that...
Provided by Dartmouth College
-
White Papers
Reliable Multicast MAC Protocol for Spatial Reuse Efficiency Assisted by Multicarrier DS-CDMA in WLAN Systems
Sep 2011
The authors propose a reliable multicast MAC protocol based on the multicarrier direct-sequence code-division multiple access (MC DS-CDMA) scheme to enhance spatial reuse efficiency in Wireless...
Provided by Ajou University
-
White Papers
Maximizing Throughput When Achieving Time Fairness in Multi-Rate Wireless LANs
Jan 2012
This paper focuses on designing a distributed medium access control algorithm that aims at achieving time fairness among contending stations and throughput maximization in an 802.11 wireless LAN....
Provided by George Washington University
-
White Papers
Achieving Proportional Fairness Via AP Power Control in Multi-Rate WLANs
Nov 2011
In this paper, the authors consider how to achieve proportional fairness in multi-rate 802.11 WLANs by investigating an integrated problem of power control and AP Association in order to provide...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Overview to the Cisco Mobility Services Architecture
May 2008
The number of employees that expect access to network resources to improve productivity has increased significantly over the past few years and the trend shows little sign of slowing anytime soon....
Provided by Cisco Systems
-
White Papers
How Enterprises Can Reduce Costs and Boost ROI With Cisco's Unified Communications Over WLAN
Mar 2008
The Cisco Unified Communications over WLAN solution helps organizations meet the changing needs of an increasingly mobile, collaborative, and virtual workforce. By delivering a consistent mobile...
Provided by Cisco Systems
-
White Papers
802.11n Wireless Technology Overview: Deploying the Next Generation of High Performance Wireless
Aug 2007
In less than a decade, wireless LANs have evolved from an interesting idea to an indispensable technology for millions of businesses and consumers. This technology continues to evolve. The latest...
Provided by Cisco Systems
-
White Papers
802.11n Access Points and Power over Ethernet: Key Considerations
Oct 2008
In this 5 page report, you'll discover more about the key technical considerations when making the move to 802.11n. The report provides: • An overview of PoE • Information on verifying power...
Provided by Siemens
-
White Papers
Practical Considerations for deploying 802.11n whitepaper
Oct 2008
There is a lot of confusion surrounding the capabilities and status of the new 802.11n WiFi standard; understandable since the standard is very broad and has been slow to develop. There are many...
Provided by Siemens
-
White Papers
Crowdsourced Radiomap for Room-Level Place Recognition in Urban Environment
Oct 2009
The proliferation of WLAN infrastructures has facilitated numerous indoor localization techniques using WLAN fingerprints. In particular, identifying a room or a place in urban environments could...
Provided by Korea Advanced Institute of Science and Technology
-
White Papers
Indoor Positioning in Wireless LANs Using Compressive Sensing Signal-Strength Fingerprints
Feb 2011
Accurate indoor localization is a significant task for many ubiquitous and pervasive computing applications, with numerous solutions based on IEEE802.11, Bluetooth, ultrasound and infrared...
Provided by University of Crete
-
White Papers
An Algorithm for Optimizing Vertical Handoff Between WLAN and Cellular Networks
Aug 2011
Today, the advent of heterogeneous wireless networks has caused a revolution in the telecommunication systems. As IP-based wireless networking increases in popularity, the handoff issue is taken...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
WPAN Interference Cancellation From OFDM Based WLAN : Strategic Comparisons of Coexistence Techniques
Sep 2011
WLAN and WPAN operate in the same 2.4GHz ISM band. So whenever they operate nearby interfere with each other, results in performance degradation for both the system in terms of bit error rate or...
Provided by Cyber Journals
-
White Papers
Reducing Layer 2 Handoff Latency in WLANs Using Advanced Context Distribution
Nov 2011
WLANs have experienced very fast deployment in both public and private areas over recent years. They provide nontrivial replacement for the complicated and high cost wired LANs. However, the...
Provided by International Journal of Scientific & Engineering Research
-
White Papers
Parameter Ranking and Reduction in Communication Systems
Mar 2011
Parameter reduction from experimental data is an important issue arising in many frequently encountered problems with different types of applications in communications engineering. However, the...
Provided by International Journal of Scientific & Engineering Research
-
White Papers
Adaptive Autocorrelation Approach for Fingerprint-based Distance Dependent Positioning Algorithms in WLAN Indoor Areas
Oct 2011
This paper addresses the adaptive autocorrelation approach for the fingerprinting-based Distance Dependent Positioning Algorithms (DDPAs) in Wireless Local Area Network (WLAN) indoor environment....
Provided by Academy Publisher
-
White Papers
Soft-Handoff in WLAN Realized by Dual Link
Apr 2011
WLAN has been widely deployed in many aspects such as city hotspots and video surveillance system. When the mobile station roams in WLAN, it will switch among different Access Points (AP). This...
Provided by Academy Publisher
-
White Papers
Security Analysis and Improvements on WLANs
Mar 2011
IEEE 802.11i standard defines the security specifications of IEEE 802.11 series Wireless Local Area Network (WLAN). It is the replacement of the old security standard named Wired Equivalent...
Provided by Academy Publisher
-
Case Studies
Putting the Most Advanced IT Tools Into the Hands of Top-Notch Healthcare Talent
Jun 2008
Santa Cabrini Hospital wanted to attract the most skilled healthcare professionals in every discipline by offering them a hospital environment with the most advanced technology available - thereby...
Provided by Nortel Networks
-
White Papers
QoS-aware Rate Control Algorithm in Long Distance Wireless Mesh Networks
Jul 2010
Supporting delay sensitive real-time traffic such as video and voice over Wireless Local Area Network-based (WLAN) Long Distance Wireless Mesh Networks (LDWMN) is a challenging and attractive...
Provided by Academy Publisher
-
White Papers
Comparisons of SCR and Active-set Methods for PAPR Reduction in OFDM Systems
Apr 2010
Signal to Clipping noise Ratio (SCR) and active-set methods are two existing methods for Peak-to-Average Power Ratio (PAPR) reduction based on tone reservation. In this paper, the computational...
Provided by Academy Publisher
-
White Papers
Proposed Enhancement of IEEE802.11e WLAN Through Real Time Simulation Study
Oct 2009
One of the most successful WLAN protocols is IEEE 802.11. That is due to the simplicity and robustness against failures of its medium access control protocol. In addition, IEEE introduces the...
Provided by International Islamic University Malaysia
-
White Papers
A New Approach for Implementing RMI in Mobile Phone Platforms
May 2011
This paper discusses challenges of implementing RMI over mobile phone platforms. Improving Distributed Computing capabilities in mobile phones has three emerging challenges: first, mobile devices...
Provided by International Association of Computer Science & Information Technology (IACSIT)
-
White Papers
Shortcut Frame Routing and Tunneling Between Wireless Bridges
Jan 2012
Wireless Local Area Networks (WLANs) are limited in size, geographically distance covered, and bandwidth. To extend a WLAN, interconnecting devices called AP/bridges are used to connect multiple...
Provided by International Association of Computer Science & Information Technology (IACSIT)
-
White Papers
A New Evaluation Model for Security Protocols
Sep 2011
Till today, the study of performance of security protocols of WLAN has been one of research focuses. Whereas, owing to enormous complexity and low efficiency of modeling security protocols, there...
Provided by Academy Publisher
-
White Papers
Numerical and Experimental Analysis of Impedance Matched Inverted-L and Stair Inverted-L Antenna for 5 GHz WLAN Operation
Aug 2010
This paper presents impedance matched high gain Inverted-L Antenna (ILA) and stair ILA for 5 GHz Wireless Local Area Network (WLAN) by means of numerical and experimental analysis. Numerical...
Provided by Academy Publisher
-
White Papers
Research on IEEE 802.11 Wireless LANs Traffic Characteristics Analysis for Supporting Picture Archiving and Communication System (PACS)
Jan 2012
Nowadays, when a health system uses medical imaging or Picture Archiving and Communication System (PACS) medicine and clinical information services such as X-ray, laboratory work, and Medical...
Provided by International Association of Computer Science & Information Technology (IACSIT)
