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wi-fi (802.11)
(2381 results)-
Whitepapers
A Network Lifetime Aware Cooperative MAC Scheme for 802.11b Wireless Networks
Dec 2009
Cooperative communication techniques have earlier been applied to design of the IEEE 802.11 Medium Access Control (MAC) and shown to perform better. High rate stations can help relay packets from...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Improving Videophone Transmission Over Multi-Rate IEEE 802.11e Networks
Apr 2009
In this paper, the authors propose an adaptive system for improving videophone transmission over EDCA. They consider that a videophone contains a Constant Bit Rate (CBR) voice source and a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An On-Off Queue Control Mechanism for Scalable Video Streaming Over the IEEE 802.11e WLAN
Apr 2009
In this paper, the authors study the issue of scalable video streaming over IEEE 802.11e EDCA WLANs. Their basic idea is to control the number of "Active" nodes on the channel in order to reduce...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Practical Path Loss Model for Indoor WiFi Positioning Enhancement
Feb 2008
Positioning within a local area refers to technology whereby each node is self-aware of its position. Based on empirical study, this paper proposes an enhancement to the path loss model in the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Framework for Femtocells to Access Both Licensed and Unlicensed Bands
Jun 2011
Cellular operators have been offloading data traffic from their licensed bands to unlicensed bands through a large number of Wi-Fi hotspots over the past years. Although this approach improves the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dual-Band Femtocell Traffic Balancing Over Licensed and Unlicensed Bands
Feb 2012
Many cellular User Equipments (UEs) today are able to access both the unlicensed band (e.g., via Wi-Fi) and the cellular licensed band. However, in most regions of the world, they are not allowed...
Provided by Polytechnic Institute of NYU
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Whitepapers
Single Hop IEEE 802.11 DCF Analysis Revisited: Accurate Modeling of Channel Access Delay and Throughput for Saturated and Unsaturated Traffic Cases
Jul 2011
Analytical models for IEEE 802.11 Distributed Coordination Function (DCF) play important roles in performance estimation, protocol optimization and admission control for wireless networks...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Utilizing Dynamic Spectrum Leasing for Cognitive Radios in 802.11-Based Wireless Networks
May 2011
Dynamic Spectrum Access (DSA) is proposed to deal with the growing shortage of available leased spectrum for wireless communication. The authors investigate a subset of DSA referred to as Dynamic...
Provided by Reed Elsevier
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Whitepapers
Improving Online Game Performance Over IEEE 802.11n Networks
Oct 2010
Multi-player online gaming is one of the most popular applications on the Internet nowadays. Due to the mobility requirements and the growing popularity of Wi-Fi services, a significant number of...
Provided by National Taiwan University
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Whitepapers
Cache Sharing Method Using IEEE 802.11 Wireless Access Points for Mobile Environment
Apr 2011
Mobile devices such as Smartphones have become commodity and access more and more large content from cloud platforms. In this paper, the authors propose a novel method to enable cache around edges...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Enhanced Protection Mechanism for Improving Co-existence of IEEE 802.11b and IEEE 802.11g Wireless LANs
Mar 2009
The widespread deployments of Wireless LANs are underpinned by two most popular variants of IEEE 802.11 standards, 802.11b and 802.11g. The 802.11g extends 802.11b to support higher data rate via...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
BER Performance of IEEE 802.11ad for Single Carrier and Multi Carrier
May 2012
In present scenario 802.11n is one of the fastest standards which is widely popular. It provides a theoretical maximum of 450 Megabits per second (Mbps), with a typical throughput of 100Mbps. As...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Experimental Comparison of Bluetooth and WiFi Signal Propagation for Indoor Localisation
Apr 2012
Systems for indoor positioning using radio technologies are largely studied due to their convenience and the market opportunities they offer. The positioning algorithms typically derive geographic...
Provided by Springer Science+Business Media
-
Whitepapers
Modern Network Security: Issues and Challenges
Jun 2011
Secure Network has now become a need of any organization. The security threats are increasing day by day and making high speed wired/wireless network and internet services, insecure and...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
FPGA Implementation of Mac Header Block of Transmitter for Wi-Fi
Apr 2011
For the wireless communication, IEEE 802.11 is one of the protocols available. The IEEE 802.11b uses the Medium Access Control layer (MAC) for wireless local area network. These wireless local...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Generating Key Streams in Infrastructure WLAN Using Bit Rate
Dec 2010
Due to the rapid growth of wireless networking, the fallible security issues of the 802.11 standard have come under close scrutiny. There are serious security issues that need to be sorted out...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Enhancing the Performance of Adhoc Networks Using New Adaptively Varying Backoff Technique
Dec 2010
As Wireless Adhoc network is usually used in the critical situations, its efficiency and performance is significant. Since MAC is the fundamental layer, the design of an efficient and high...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Security Improvement of WPA 2 (Wi-Fi Protected Access 2)
Jan 2011
WPA and WPA2 (Wi-Fi Protected Access) is a certification program developed by the Wi-Fi Alliance to indicate compliance with the security protocol created by the WiFi Alliance to secure wireless...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
IEEE 802.11 Distance Estimation Based on RTS/CTS Two-Frame Exchange Mechanism
Mar 2009
The addition of positioning capabilities to widespread communications such as IEEE 802.11 compliant networks could open up interesting markets, in particular if a low-cost hardware has to be added...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Interference Suppression for Next Generation Wireless Systems
Mar 2009
To cope with the ever-increasing demands on higher spectral efficiency, a tight frequency reuse will be adopted for future wireless communication systems as 3GPP LTE, IEEE 802.11n and IEEE...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Industrial Prototyping: A Common Architecture and Case Study of IEEE 802.11n Transmit Beamforming
Mar 2009
Prototyping is a means to rapidly test the feasibility of a design before entering a full design process or mass production. An important consideration within industrial research is the transfer...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
IQ Imbalance Compensation Scheme in the Presence of Frequency Offset and Dynamic DC Offset for a Direct Conversion Receiver
Mar 2009
A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from Direct Current (DC) offset, frequency offset, and IQ...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Performance Improvement of 802.11 MAC by Enhancements in DCF
Jan 2012
In the 802.11 protocol, the fundamental mechanism to access the medium is called Distributed Coordination Function (DCF). This is a random access scheme, based on the Carrier Sense Multiple Access...
Provided by International Journal of Emerging Technology and Advanced Engineering (IJETAE)
-
Whitepapers
Exploiting I/Q Imbalance in Direct Conversion Transceivers for Improving the Performance of a V-BLAST OFDM System
Mar 2009
Due to the ever growing demand for higher data rates, some of the most recent wireless communication standards, as IEEE 802.16 (WiMAX) and IEEE 802.11n (WiFi), make use of multiple antennas at...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Vehicular Mobility Management Schemes for Balancing Loads Among WMN Access Points
Mar 2009
Wireless Mesh Networks (WMN) are poised to be a cost-effective platform for many municipal applications in public safety, business and entertainment. In this paper, the authors study WMN-based...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Quantifying Performance Requirements of Vehicle-to-Vehicle Communication Protocols for Rear-End Collision Avoidance
Mar 2009
The authors derive analytical bounds for the maximum acceptable message delivery latency and the minimum required retransmission frequency of 802.11-based Vehicle-To-Vehicle (V2V) communication...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Performance Evaluation of Multi-Radio Transmission Diversity: QoS Support for Delay Sensitive Services
Mar 2009
Integration and seamless networking of different wireless technologies is one of the driving scenarios in the contemporary research. In recent years, mobile phones have seen an influx of...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
CSMA with Enhanced Collision Avoidance: a Performance Assessment
Mar 2009
CSMA with Enhanced Collision Avoidance (CSMA/ECA) uses a deterministic back-off after successful transmissions to significantly reduce the number of collisions. This paper assesses by means of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Load-balancing Framework for Cognitive Wireless Network to Coexist with Legacy WiFi Systems
Mar 2009
This paper proposes a framework to collect bandwidth information from terminals, analyze them statistically, and feed back to terminals in order to increase usable bandwidth in terminals keeping...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Compact Planar Multiband Antenna for WLAN: Design, Simulation and Results
Dec 2011
With the rapid development of wireless communication systems, the multiple separated frequency bands antenna has become one of the most important circuit elements and attracted much interest. In...
Provided by International Journal of Emerging Technology and Advanced Engineering (IJETAE)
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Whitepapers
IEEE 802.11p Performance Evaluation and Protocol Enhancement
Oct 2008
The IEEE 802.11p Wireless Access in Vehicular Environment (WAVE) protocol providing for vehicle-to-infrastructure and vehicle-to-vehicle radio communication is currently under standardization. The...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Achievable Rate Region and Optimality of Multi-Hop Wireless 802.11-Scheduled Networks
Jan 2008
This paper describes a methodology to find the achievable rate region for any static wireless multi-hop network with 802.11 scheduling. To do so, the authors first characterize the achievable...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Modified Bowtie Antenna Design for Wi-Fi and WiMAX Applications
Jun 2008
This paper presents a new approach for the design of a multi-band bowtie antenna. By incorporating slots with different shapes and sizes on the arms of the bowtie, resonance is obtained in the 2.4...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Evaluation of Wireless Sensor Network With Hybrid Channel Access Mechanism
Jan 2009
In this paper, a hybrid channel access mechanism is proposed for the wireless sensor network that considers the channel access procedure of IEEE 802.15.4 and combines the binary exponential...
Provided by Reed Elsevier
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Whitepapers
A Clock Synchronization Algorithm for Multihop Wireless Ad Hoc Networks
Oct 2007
In multi-hop wireless ad hoc networks, it is important that all mobile hosts are synchronized. Synchronization is necessary for power management and for Frequency Hopping Spread Spectrum (FHSS)...
Provided by National Central University
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Whitepapers
Using Fuzzy Color Maps to Increase the Positioning Accuracy in Poor Wi-Fi Coverage Regions
Sep 2011
Recently, in the context of IEEE 802.11b/g network protocols, Wi-Fi radio channels been proposed to estimate the location of a smart mobile device. The authors can locate Wi-Fi-enabled devices by...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Wi-Fi Positioning Based on Fourier Descriptors
May 2010
Location Fingerprinting (LF) is a common Wi-Fi positioning method, which locates a device by accessing a pre-recorded database containing the location fingerprint (i.e., the received signal...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Wireless Tracking Analysis in Location Fingerprinting
May 2009
Wireless tracking analysis is useful for deploying the efficient indoor positioning system. Location Fingerprinting (LF) method uses a training dataset of Wi-Fi Received Signal Strength (RSS) at...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Vertical Handoff Between 802.11 and 802.16 Wireless Access Networks
Oct 2008
In this paper, the authors consider an interworking architecture of wireless mesh backbone and propose an effective vertical handoff scheme between 802.11 and 802.16 wireless access networks. The...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
VoIP Call Capacity Over Wireless Mesh Networks
Oct 2008
In recent years, research on VoIP over Wireless Mesh Network (WMN) has gained particular attention because of its commercial prospect. This paper presents an analytical method to estimate VoIP...
Provided by Institute of Electrical & Electronic Engineers
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Webcasts
Next-Generation Wi-Fi: Unwiring the 21st Century School
Jan 2009
Building a wireless network that effectively supports 21st Century learning initiatives doesn't have to be a complex and costly exercise. The attendee of this webcast will hear and learn from...
Provided by Meru Networks
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Webcasts
802.11n: What It Means for Your Enterprise
Jan 2009
The presenter discusses key considerations for The Next Generation Network and Jean Boland, CIO of Morrisville State College provides first hand insights from her real-world 802.11n network...
Provided by Meru Networks
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Webcasts
Wireless LAN Edge: Is 802.11n the End of Ethernet?
Nov 2007
With WiFi Alliance certifying 802.11n draft 2.0 that is promising to deliver Ethernet equivalent speeds on WLAN, enterprises are beginning to look at wireless as an alternate to wired networks at...
Provided by Meru Networks
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Webcasts
How to Migrate & Scale the Network From 802.11a/b/g to 802.11n
Feb 2008
The presenter of this webcast shares the findings from his recent independent testing of three enterprise wireless LAN systems-Meru, Cisco and Aruba. The presenter discusses limitations of various...
Provided by Meru Networks
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Webcasts
How 802.11n Helps Performance, Reliability and TCO
Jan 2009
Ethernet replaced Token Ring because it was simpler, more economical and served the needs of users. But wired Ethernet no longer serves the needs of every user. The demand for mobility makes Wi-Fi...
Provided by Network World
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Webcasts
Making Wi-Fi More Reliable Than Ethernet
Jan 2009
Wireless networks can be even more reliable than wires. The attendee will learn about Virtual Cells, channel layering and RF issues pertaining to 802.11n.
Provided by Meru Networks
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Webcasts
802.11n Ratification - Come With Questions, Leave With Answers
Sep 2009
For starters, industry experts say that by the year 2012 80% of wireless LAN installations will be 802.11n. The result of that is not only will the vast majority of IT departments need to support...
Provided by Meru Networks
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White Papers
Playout Buffer and Rate Optimization for Streaming Over IEEE 802.11 Wireless Networks
Aug 2009
Most streaming rate selection and buffer optimization algorithms are developed for wired networks and can perform poorly over wireless networks. WirelessMAClayer behavior, such as rate adaptation,...
Provided by Association for Computing Machinery
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White Papers
Wifi-Reports: Improving Wireless Network Selection With Collaboration
Jun 2009
Wi-Fi clients can obtain much better performance at some commercial hotspots than at others. Unfortunately, there is currently no way for users to determine which hotspot Access Points (APs) will...
Provided by Association for Computing Machinery
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White Papers
Motorola M2M Wireless Modules: W24 Wi-Fi Module Product Features
Jan 2009
Motorola's W24 Wi-Fi module is designed to be the ultimate communication solution for multiple M2M devices. With easy Wi-Fi (802.11b/g) access to internet and data connections for cost effective...
Provided by Motorola
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White Papers
A SDR Platform for Mobile Wi-Fi/3G UMTS System on a Dynamic Reconfigurable Architecture
Aug 2009
As wireless communication standards evolve, Wi-Fi and WCDMA based 3G UMTS are still the major technologies widely deployed to provide high speed wireless internet access and mobile communication...
Provided by EURASIP
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Case Studies
Nortel on Nortel: Upgrading WLAN Security to 802.11i
Jan 2009
At Nortel IT security is always top of mind, especially when making changes to the Wireless LAN (WLAN) infrastructure. The challenge was to simplify the end user experience for wireless LAN...
Provided by Nortel Networks
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Case Studies
Trapeze WLAN Allows Airport Staff, Business Tenants and Travelers to Securely Share Single, Common Wireless Infrastructure
Nov 2008
Manchester Airports Group (MAG) - the second-largest airport operator in the United Kingdom - runs the airports of Manchester, Nottingham East Midlands, Bournemouth and Humberside. Manchester...
Provided by Trapeze Networks
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Case Studies
Large Belgian Media Group Standardizes on NonStop Wireless for Mission Critical, Time-Critical Printing Facilities and Other Centers
Feb 2009
De Persgroep is a large Belgian media group that publishes many newspapers, magazines and online media and also runs radio and television channels. The challenge was high degree of security and...
Provided by Trapeze Networks
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Case Studies
Famous Raceway Delivers Secure, Reliable Indoor and Outdoor Wi-Fi to Fans, Vendors and Race Teams
Oct 2008
With its 2.2 miles of track located near Monterey, California, the raceway features 11 turns, including the famous downhill, twisting "Corkscrew" at Turn 8, and "Rainey Curve" at Turn 9, named...
Provided by Trapeze Networks
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Case Studies
Trapeze Smart Mobile Assists Avans Hogescholen in Building Education Inspiration With a Modern Wireless Network to Allow Students to Study Whenever and Wherever It Suits Them
Dec 2008
Serving approximately 18,000 students, Avans College employs 1,800 people spread over 18 academies and three support services. The organization is therefore comparable to a large company. The...
Provided by Trapeze Networks
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Case Studies
Campus-Wide Wireless Initiative Puts 17,000 Students and Staff at the Forefront of Information Technology Usage
Oct 2008
The University has three colleges catering for students from all over the world and maintains the highest level of infrastructure. The challenge was to create an IT environment that enables staff...
Provided by Trapeze Networks
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Case Studies
Azienda Unita Sanitaria Locale of Piacenza Installed a Wireless Network to Provide Connectivity to the Newest Devices and Technologies Entering Use in Modern Healthcare Facilities
Dec 2008
Azienda Unita Sanitaria Locale (AUSL) of Piacenza was established in 1994 by aggregating 3 local health institutions and today is one of the most important public administration bodies for...
Provided by Trapeze Networks
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Case Studies
Trapeze Smart Mobile Delivers Wireless Mobility for 16,000 Professionals in 100 Facilities at Wheaton Franciscan Healthcare
Oct 2008
Based in suburban Milwaukee, Wisconsin, nonprofit Wheaton Franciscan Healthcare (WFH) is one of the largest healthcare providers in the Midwestern United States. The challenge was to replace a...
Provided by Trapeze Networks
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White Papers
Comparative Analysis of Alternative Last Mile Broadband Access Technologies (Wi-Fi and WiMAX)
May 2009
Broadband wireless access networks are considered to be enterprise-level networks providing more capacity and coverage. Wireless networking has offered an alternative solution to the problem of...
Provided by Covenant University
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White Papers
A Pegasus Over WiFi and WiMax Demo: Connectivity at High Speeds
Sep 2009
This paper presents Pegasus, a system providing wireless connection roaming at high velocities over multiple interfaces. The system operates over WiMax, as well as over "In situ" WiFi networks,...
Provided by University of Maryland
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White Papers
Energy-Efficient Network Selection With Mobility Pattern Awareness in an Integrated WiMAX and WiFi Network
Aug 2009
To provide wireless Internet access, WiFi networks have been deployed in many regions such as buildings and campuses. However, WiFi networks are still insufficient to support ubiquitous wireless...
Provided by John Wiley & Sons
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White Papers
Hybrid WiMAX and Wi-Fi Networks for the Support of b-Learning and Telemedicine
Mar 2009
This paper addresses the deployment of hybrid WiMAX and Wi-Fi networks for the support of always best connected telemedicine and health sciences education applications. The available services...
Provided by Universidade da Beira Interior
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White Papers
An Energy-Efficient Handover Scheme With Geographic Mobility Awareness in WiMAX-WiFi Integrated Networks
Dec 2008
WiFi networks have been deployed in many regions such as buildings and campuses to provide wireless Internet access. However, to support ubiquitous wireless service, one possibility is to...
Provided by National Chiao-Tung University
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White Papers
Seamless Communication: Simplicity, Efficiency, and Transparency Achieved Through Integrated Wireline and Wireless Services
Nov 2009
Reduce costs, minimize complexity and improve worker productivity by integrating your wireline and wireless services. Respected consulting firm IDC examines the benefits, challenges and the...
Provided by Sprint
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White Papers
AnonySense: Privacy-Aware People-Centric Sensing
Jun 2008
Personal mobile devices are increasingly equipped with the capability to sense the physical world (through cameras, microphones, and accelerometers, for example) and the network world (with Wi-Fi...
Provided by Association for Computing Machinery
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White Papers
Wi-Fi and Bluetooth: The Path From Carter and Reagan-Era Faith in Deregulation to Widespread Products Impacting Our World
May 2009
The rules adopted in Docket 81-413 had a much greater impact than any of its advocates could ever have imagined at the time. They enabled the development of Wi-Fi, Bluetooth, the majority of...
Provided by Emerald Group Publishing
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White Papers
Medical-Grade, Mission-Critical Wireless Networks
Mar 2008
Off late healthcare environment requires an enterprise mobility solution for both patients and staff. Separate isolated networks are suboptimal from cost, management, scalability, and reliability...
Provided by Institute of Electrical and Electronics Engineers
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Whitepapers
Location-Based Services for Cellular Phones Using Wi-Fi: The University of Cincinnati's System for Emergency Call Location
Sep 2009
Virtually every new smartphone coming to market now has Wi-Fi functionality, and Wi-Fi is preferred for data services due to its high performance and low cost. Many universities already offer...
Provided by Aruba Networks
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Whitepapers
The Whys and Hows of Deploying Large-Scale Campus-Wide Wi-Fi Networks
Jan 2008
Ubiquitous Wi-Fi across an enterprise or campus is a very positive and exciting experience for students, faculty, staff and visitors to institution. Having instant access to email, the internet,...
Provided by Aruba Networks
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Whitepapers
Interactive Learning 2.0: How Wi-Fi Enhances Learning and Improves Student/Teacher Interaction
Jul 2008
While quite effective, smart classrooms have had limited deployment due to their high cost and need for specialized physical spaces. However, as the adoption of Wi-Fi enabled laptops proliferates...
Provided by Aruba Networks
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Whitepapers
Running for Coverage: A Review of Femtocells
Jan 2008
Femtocells are short-range radios used to extend the cellular network into homes and office buildings. While there is enormous enthusiasm over their prospects, deployment is still at a very early...
Provided by Aruba Networks
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Whitepapers
Banning Wireless Doesn't Stop Users: Understand How to Protect Your Network and Support Wi-Fi Enthusiasts
Dec 2007
Despite great strides in Wireless LAN (WLAN) technology, many organizations continue to choose a "No-Wireless" policy, meaning wireless deployments of any kind are expressly prohibited by...
Provided by Aruba Networks
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Whitepapers
Network Access Control for Mobile Networks
Dec 2007
The threat of an infected device gaining access to a healthy enterprise network is becoming a significant concern. The focus has been on securing the network perimeter, which leaves the network...
Provided by Aruba Networks
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Whitepapers
Interoperability Considerations for Today's Wi-Fi Networks
Dec 2007
As Wireless LANs (WLANs) have expanded rapidly over the recent years, the adoption rate for the IEEE 802.11 technology has seen a tremendous growth. Such market demand for unwiring enterprise...
Provided by Aruba Networks
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Whitepapers
Unwiring the Enterprise: A Fresh Look at the Risks and Rewards of Abandoning Wired Access for Wi-Fi
Dec 2007
WLANs are no longer a novelty for tech savvy home users. In recent years, there have been major developments targeted at making WiFi applicable to the corporate world; most notably in the areas of...
Provided by Aruba Networks
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Whitepapers
Designed for Speed: Network Infrastructure in an 802.11n World
Jun 2009
The IEEE 802.11n standard and Wi-Fi Alliance 802.11n certification herald a new world for enterprise wireless networks. 802.11n brings significantly higher data rates and more reliable coverage...
Provided by Aruba Networks
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Whitepapers
It Takes Two to Tango: Using Wi-Fi and WiMAX to Deliver Broadband Wireless Services to Fixed and Mobile Clients
Jan 2008
This paper seeks to answer the questions from the viewpoint of a Wi-Fi network manager. The key questions are how soon WiMAX networks will be available, and how could WiMAX be made to work in...
Provided by Aruba Networks
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Whitepapers
The All-Wireless Workplace Is Now Open for Business: Using 802.11n as Your Primary Network LAN Deployments
Dec 2007
Wi-Fi technology has been steadily improving for some years, to the extent that many workers now rely on wireless as their primary data connection to the corporate network. Wi-Fi infrastructure...
Provided by Aruba Networks
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Whitepapers
The T-Mobile HotSpot@Home UMA Service on a University or Enterprise WLAN
Feb 2009
Off late the features of dual-mode devices (cellular voice and data clients with additional Wi-Fi radios) have grown increasingly sophisticated. The burgeoning capabilities of these devices have...
Provided by Aruba Networks
-
Whitepapers
Enhanced Protection Mechanism for Improving Co-existence of IEEE 802.11b and IEEE 802.11g Wireless LANs
Mar 2009
The widespread deployments of Wireless LANs are underpinned by two most popular variants of IEEE 802.11 standards, 802.11b and 802.11g. The 802.11g extends 802.11b to support higher data rate via...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
BER Performance of IEEE 802.11ad for Single Carrier and Multi Carrier
May 2012
In present scenario 802.11n is one of the fastest standards which is widely popular. It provides a theoretical maximum of 450 Megabits per second (Mbps), with a typical throughput of 100Mbps. As...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Experimental Comparison of Bluetooth and WiFi Signal Propagation for Indoor Localisation
Apr 2012
Systems for indoor positioning using radio technologies are largely studied due to their convenience and the market opportunities they offer. The positioning algorithms typically derive geographic...
Provided by Springer Science+Business Media
-
Whitepapers
Modern Network Security: Issues and Challenges
Jun 2011
Secure Network has now become a need of any organization. The security threats are increasing day by day and making high speed wired/wireless network and internet services, insecure and...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
FPGA Implementation of Mac Header Block of Transmitter for Wi-Fi
Apr 2011
For the wireless communication, IEEE 802.11 is one of the protocols available. The IEEE 802.11b uses the Medium Access Control layer (MAC) for wireless local area network. These wireless local...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Generating Key Streams in Infrastructure WLAN Using Bit Rate
Dec 2010
Due to the rapid growth of wireless networking, the fallible security issues of the 802.11 standard have come under close scrutiny. There are serious security issues that need to be sorted out...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Enhancing the Performance of Adhoc Networks Using New Adaptively Varying Backoff Technique
Dec 2010
As Wireless Adhoc network is usually used in the critical situations, its efficiency and performance is significant. Since MAC is the fundamental layer, the design of an efficient and high...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
Security Improvement of WPA 2 (Wi-Fi Protected Access 2)
Jan 2011
WPA and WPA2 (Wi-Fi Protected Access) is a certification program developed by the Wi-Fi Alliance to indicate compliance with the security protocol created by the WiFi Alliance to secure wireless...
Provided by International Journal of Engineering Science and Technology (IJEST)
-
Whitepapers
IEEE 802.11 Distance Estimation Based on RTS/CTS Two-Frame Exchange Mechanism
Mar 2009
The addition of positioning capabilities to widespread communications such as IEEE 802.11 compliant networks could open up interesting markets, in particular if a low-cost hardware has to be added...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Interference Suppression for Next Generation Wireless Systems
Mar 2009
To cope with the ever-increasing demands on higher spectral efficiency, a tight frequency reuse will be adopted for future wireless communication systems as 3GPP LTE, IEEE 802.11n and IEEE...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Industrial Prototyping: A Common Architecture and Case Study of IEEE 802.11n Transmit Beamforming
Mar 2009
Prototyping is a means to rapidly test the feasibility of a design before entering a full design process or mass production. An important consideration within industrial research is the transfer...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
IQ Imbalance Compensation Scheme in the Presence of Frequency Offset and Dynamic DC Offset for a Direct Conversion Receiver
Mar 2009
A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from Direct Current (DC) offset, frequency offset, and IQ...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Performance Improvement of 802.11 MAC by Enhancements in DCF
Jan 2012
In the 802.11 protocol, the fundamental mechanism to access the medium is called Distributed Coordination Function (DCF). This is a random access scheme, based on the Carrier Sense Multiple Access...
Provided by International Journal of Emerging Technology and Advanced Engineering (IJETAE)
-
Whitepapers
Exploiting I/Q Imbalance in Direct Conversion Transceivers for Improving the Performance of a V-BLAST OFDM System
Mar 2009
Due to the ever growing demand for higher data rates, some of the most recent wireless communication standards, as IEEE 802.16 (WiMAX) and IEEE 802.11n (WiFi), make use of multiple antennas at...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Vehicular Mobility Management Schemes for Balancing Loads Among WMN Access Points
Mar 2009
Wireless Mesh Networks (WMN) are poised to be a cost-effective platform for many municipal applications in public safety, business and entertainment. In this paper, the authors study WMN-based...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Quantifying Performance Requirements of Vehicle-to-Vehicle Communication Protocols for Rear-End Collision Avoidance
Mar 2009
The authors derive analytical bounds for the maximum acceptable message delivery latency and the minimum required retransmission frequency of 802.11-based Vehicle-To-Vehicle (V2V) communication...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Performance Evaluation of Multi-Radio Transmission Diversity: QoS Support for Delay Sensitive Services
Mar 2009
Integration and seamless networking of different wireless technologies is one of the driving scenarios in the contemporary research. In recent years, mobile phones have seen an influx of...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
CSMA with Enhanced Collision Avoidance: a Performance Assessment
Mar 2009
CSMA with Enhanced Collision Avoidance (CSMA/ECA) uses a deterministic back-off after successful transmissions to significantly reduce the number of collisions. This paper assesses by means of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Load-balancing Framework for Cognitive Wireless Network to Coexist with Legacy WiFi Systems
Mar 2009
This paper proposes a framework to collect bandwidth information from terminals, analyze them statistically, and feed back to terminals in order to increase usable bandwidth in terminals keeping...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Compact Planar Multiband Antenna for WLAN: Design, Simulation and Results
Dec 2011
With the rapid development of wireless communication systems, the multiple separated frequency bands antenna has become one of the most important circuit elements and attracted much interest. In...
Provided by International Journal of Emerging Technology and Advanced Engineering (IJETAE)
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Whitepapers
IEEE 802.11p Performance Evaluation and Protocol Enhancement
Oct 2008
The IEEE 802.11p Wireless Access in Vehicular Environment (WAVE) protocol providing for vehicle-to-infrastructure and vehicle-to-vehicle radio communication is currently under standardization. The...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Achievable Rate Region and Optimality of Multi-Hop Wireless 802.11-Scheduled Networks
Jan 2008
This paper describes a methodology to find the achievable rate region for any static wireless multi-hop network with 802.11 scheduling. To do so, the authors first characterize the achievable...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Modified Bowtie Antenna Design for Wi-Fi and WiMAX Applications
Jun 2008
This paper presents a new approach for the design of a multi-band bowtie antenna. By incorporating slots with different shapes and sizes on the arms of the bowtie, resonance is obtained in the 2.4...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Evaluation of Wireless Sensor Network With Hybrid Channel Access Mechanism
Jan 2009
In this paper, a hybrid channel access mechanism is proposed for the wireless sensor network that considers the channel access procedure of IEEE 802.15.4 and combines the binary exponential...
Provided by Reed Elsevier
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Whitepapers
A Clock Synchronization Algorithm for Multihop Wireless Ad Hoc Networks
Oct 2007
In multi-hop wireless ad hoc networks, it is important that all mobile hosts are synchronized. Synchronization is necessary for power management and for Frequency Hopping Spread Spectrum (FHSS)...
Provided by National Central University
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Whitepapers
Using Fuzzy Color Maps to Increase the Positioning Accuracy in Poor Wi-Fi Coverage Regions
Sep 2011
Recently, in the context of IEEE 802.11b/g network protocols, Wi-Fi radio channels been proposed to estimate the location of a smart mobile device. The authors can locate Wi-Fi-enabled devices by...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Wi-Fi Positioning Based on Fourier Descriptors
May 2010
Location Fingerprinting (LF) is a common Wi-Fi positioning method, which locates a device by accessing a pre-recorded database containing the location fingerprint (i.e., the received signal...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Wireless Tracking Analysis in Location Fingerprinting
May 2009
Wireless tracking analysis is useful for deploying the efficient indoor positioning system. Location Fingerprinting (LF) method uses a training dataset of Wi-Fi Received Signal Strength (RSS) at...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Vertical Handoff Between 802.11 and 802.16 Wireless Access Networks
Oct 2008
In this paper, the authors consider an interworking architecture of wireless mesh backbone and propose an effective vertical handoff scheme between 802.11 and 802.16 wireless access networks. The...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
VoIP Call Capacity Over Wireless Mesh Networks
Oct 2008
In recent years, research on VoIP over Wireless Mesh Network (WMN) has gained particular attention because of its commercial prospect. This paper presents an analytical method to estimate VoIP...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Rate-Based Channel Assignment Algorithm for Multi-Channel Multi-Rate Wireless Mesh Networks
Oct 2008
Wireless Mesh Networks (WMNs) support the cost-effective broadband access for Internet users. Although today's IEEE 802.11 PHY and MAC specifications provide multi-channel and multi-rate...
Provided by Institute of Electrical & Electronic Engineers
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Case Studies
Wirelessly Enhancing Student Performance in Texas
Jul 2010
Keller Independent School District (Keller ISD) is one of the state's fastest-growing school districts. Keller plans to move to a digital curriculum to support one-to-one (1:1) instructional...
Provided by Motorola
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Whitepapers
Cluster Based Routing Protocol for Mobile Ad Hoc Networks
Feb 2009
In this paper, the authors proposed a cluster based routing protocol for mobile ad hoc network. It uses clustering's structure to decrease average end-to-end delay and improve the average packet...
Provided by Universidade Federal de Lavras
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Whitepapers
Improving Video Streaming Over IEEE 802.11 Mesh Networks Through a Cross-Layer Design Technique
Dec 2008
There has been a spate of interest in wireless mesh networks in recent years. The reason behind such an upsurge of interest is that wireless mesh networks are seen as enablers of ubiquitous...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
IEEE 802.11x, and WEP, EAP,WPA/WPA2
Dec 2011
This paper is a brief survey of IEEE 802.11i based WPA2 or Wi-Fi protected Mode protocol popularly called as Wi-Fi Protected Access (WPA) Mode Protocol. In this paper, the authors tried their best...
Provided by International Journal of Computer Technology and Applications
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Whitepapers
Live and On-Demand: Streaming Video with LifeSize UVC Video Center
Aug 2012
Think of all the ways you can harness the power of video communication: interviewing candidates, sales training, new product releases, "All hands" Company meetings, project stand ups/status...
Provided by LifeSize Communications, Inc.
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Whitepapers
Study and Analysis of Bandwidth Flow Estimation Techniques for Wired/Wireless Networks
Feb 2012
In this topic, an analysis will be made on bandwidth flow estimation technique which comes under networking domain. Correct bandwidth constrained applications and tools are required for proper...
Provided by International Journal of Computer Technology and Applications
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Whitepapers
A MAC Technique for VoIP Services Using Back Off Algorithm in IEEE 802.11e Networks
Feb 2012
In the advent of emerging information super highway, voice over Internet Protocol has become a vital service with the demand for high quality of requirements in Wireless Local Area Network...
Provided by International Journal of Computer Technology and Applications
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Whitepapers
Performance Analysis of Collision Avoidance MAC Protocol in Multi-Hop Wireless Ad-Hoc Network
Sep 2011
Performance analysis of 802.11Medium Access Control (MAC) protocol has been carried out either by means of simulation or by means of analytical models with simplified back-off rule assumptions....
Provided by INTI University College
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Whitepapers
Simulating Denial of Service Attack Using WiMAX Experimental Setup
Jan 2011
The IEEE802.16 Wireless Metropolitan Area Network (WMAN) is set to revolutionize the delivery of Broadband Wireless Access (BWA) not unlike how the IEEE802.11 Wi-Fi standard popularized wireless...
Provided by INTI University College
