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wireless lan
(1551 results)-
Whitepapers
Out-of-Band Signaling Scheme for High Speed Wireless LANs
Sep 2007
In recent years, the physical layer data rate provided by 802.11 Wireless LANs has dramatically increased thanks to significant advances in the modulation and coding techniques employed. However,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Retry Limit Based ULP for Scalable Video Transmission Over IEEE 802.11e WLANs
Jun 2007
The authors investigate the packet loss behavior in the IEEE 802.11e Wireless Local Area Networks (WLANs) under various retry limit settings. Considering scalable video traffic delivery over the...
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
Wireless Indoor Positioning System With Enhanced Nearest Neighbors in Signal Space Algorithm
Feb 2007
With the rapid development and wide deployment of wireless Local Area Networks (WLANs), WLAN-based positioning system employing signal-strength-based technique has become an attractive solution...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Throughput Analysis of a Cognitive IEEE 802.11 WLAN Sharing the Downlink Band of a Cellular Network
Apr 2011
In this paper, the authors propose an analytical model to evaluate the maximum stable throughput of a cognitive IEEE 802.11-based WLAN sharing the downlink band of a cellular network. Their model...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Autonomous Dynamic Frequency Selection for WLANs Operating in the TV White Space
Apr 2011
This paper describes the challenges of frequency channel selection for WLANs operating in the TV White Space (TVWS) and proposes a Dynamic Frequency Selection (DFS) technique as the solution....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Comparison of Spectrum Sharing Techniques for IMT-A Systems in Local Area Networks
Mar 2009
The explosive growth of mobile communications on one hand and the overly crowded and expensive spectrum on the other hand have fueled hot debates on spectrum sharing techniques, anticipating...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cross-Layer-Optimized User Grouping Strategy in Downlink Multiuser MIMO Systems
Mar 2009
This paper proposes a cross-layer-optimized user selection and packet transmission technique for the downlink Multi-User (MU) Multiple-Input Multiple-Output (MIMO) system in IEEE 802.11 Wireless...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dynamic Contention Window Control Scheme in IEEE 802.11e Wireless LANs
Mar 2009
In the IEEE 802.11 MAC protocol, Access Points (APs) are given the same authority as Wireless Terminals (WTs) in terms of acquiring the wireless link, even though they aggregate several downlink...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Impact of Best Effort Frame Bursting in IEEE 802.11 Networks
Mar 2009
Wireless LAN strongly prioritizes high priority traffic over low priority best effort traffic. This causes reduced access to the medium for low priority traffic and under some conditions even...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Bandwidth Efficient Pairing Strategy for the MIMO-OFDM Based WLANs
Mar 2009
The advanced MIMO (Multiple-Input Multiple-Output) system can provide higher capacity gain or higher diversity gain in modern wireless networks. The capacity gain is achieved by interference...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Frame Aggregation and Concatenation Schemes for IEEE EDCF 802.11e: A First Order MAC and PHY Cross-Layer Model to Estimate the Throughput
Mar 2009
The IEEE 802.11 MAC protocol has several overheads that limit the maximum net throughput. Therefore, different from PHY layer enhancements of 802.11a/.11g, the upcoming IEEE 802.11n standard will...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
WLAN-Based Real Time Vehicle Locating System
Mar 2009
This paper presents a Wireless Local Area Network (WLAN)-based real time system for indoors and outdoors vehicle localization. The proposed solution uses a neural network trained with a map of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Characterization of Vertical Handoff Delay for Mobile IP Based 3G/WLAN Integrated Networks
Mar 2009
Mobile IP is one of the popular mobility solution and a viable candidate for the Beyond 3rd Generation (B3G) networks such as the integrated 3rd Generation Universal Mobile Telecommunications...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Towards an Optimisation of Parameters Setting in WLANs
Mar 2009
This paper studies performance optimisation in WLANs, by means of Quality of Service (QoS) algorithms. The 802.11e standard for QoS is analyzed, compared to legacy ones, new algorithms being...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Processor Sharing of File Transfers in Wireless LANs
Mar 2009
The authors study the performance of FTP file transfers over a WLAN and propose a new analytic model that translates the highly complex dynamics of the FTP/TCP/IP/MAC-stack, and their...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimisation of Radio Access Network Operation Introducing Self-X Functions
Mar 2009
With the deployment of next generation (4G) mobile radio systems an additional radio access network is established. A variety of different Radio Access Technologies (RATs) will be operated in...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Distributed Opportunistic Packet Scheduling Policy in Wireless LANs
Jul 2008
Due to the fluctuations of wireless channels, the authors can use opportunistic scheduling to exploit multiuser diversity. The conventional opportunistic scheduling is not applied to wireless LANs...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Laboratory Assessment of WLAN Performance Degradation in the Presence of Impulsive Noise
Jun 2008
A laboratory test to assess the impact of impulsive noise on the performance of WLAN equipment is described. The test is put in the context of a larger programme of work to assess the performance...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Dynamic Channel Assignment in IEEE 802.11g
Jun 2008
In this paper, the authors propose a dynamic channel-assignment algorithm which minimizes the total interferences between Access Points (APs) of a Wireless Local Area Network (WLAN), while...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Improved Axial-Mode-Helical-Antenna Impedance Matching Utilizing Triangular Copper Strip for 2.4- GHz WLAN
Jun 2008
In this paper, impedance matching for a PVC-tube helical antenna operating at the frequency of 2.4 GHz is experimentally investigated. The helical wire is wound around a Poly-Vinyl Chloride (PVC)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Channel Occupancy Time Based TCP Rate Control for IEEE 802.11 DCF
Jun 2008
In multi-rate IEEE 802.11 wireless LAN, when multiple stations transmit frames at different data rates, the Basic Service Set (BSS) suffers from "Performance anomaly" problem. In this paper, to...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A Throughput-Based Radio Channel Allocation Algorithm for WLANs With Multiple APs
Jun 2008
Usually, the Radio Channel Allocation (RCA) problems of Wireless LANs (WLANs) are solved by using various heuristic methods. However, it is not clear that the minmax problem is an NP-hard problem...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A New Method for Measuring Interference Between UWB and Wireless LAN Systems
Jun 2008
A new method for experimentally simulating the interference between UWB (Ultra WideBand) and WLAN (Wireless LAN) systems is presented. The method employs a GTEM (Gigahertz Transverse...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Study and Design of QoS-Based VoIP Over Wireless LAN
Jun 2008
Two of the major developments reshaping the telecommunications landscape are mobile wireless connectivity and the migration of voice telephone services to IP technology. These two ideas come...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Efficient Mobility Management Protocols for Integrated UMTS and Outdoor WLAN 802.11g
Jun 2008
Next Generation (4G) network can be achieved through the interworking of several existing architecture to form a seamless global network. The need for a high speed (mobility) support, ubiquitous...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Game-Theoretic Cross-Layer Design in WLANs
Jun 2008
In this paper, an incompletely cooperative game-theoretic MAC protocol is presented to improve the performance of WLANs. Firstly, each node estimates the current game state upon running CSMA/CA....
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
WLAN/WDS Performance Using Directive Antennas in Highly Mobile Scenarios: Experimental Results
Jun 2008
This paper presents experimental results from a series of IEEE 802.11g studies to investigate the performance of vehicular to roadside wireless communications. In particular, two high-gain...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A Simple and Fast Detect and Avoid Algorithm for Non-Coherent Multiband Impulse Radio UWB
Jul 2008
In this paper, the authors present a simple and fast Detect And Avoid (DAA) algorithm for non-coherent multiband impulse radio UWB. By independent parallelized interception of all subbands, this...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Low Profile, Dual Polarised Antenna for Aeronautical and Land Mobile Satcom
Jun 2008
Two of the major developments reshaping the telecommunications landscape are mobile wireless connectivity and the migration of voice telephone services to IP technology. These two ideas come...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Using a Cell-Based WLAN Infrastructure Design for Resource-Effective and Accurate Positioning
Dec 2009
A large scale WLAN infrastructure requires the placement of many thousands of Access Points (APs). The current approach is to deploy these in an empirical and ad-hoc manner. However, this...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Using the Newton Trust-Region Method to Localize in WLAN Environment
Dec 2009
Localization systems for indoor areas using the existing Wireless Local Area Network (WLAN) infrastructure have been suggested recently. However, the current systems are not satisfactory. Common...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Fuzzy Topographic Modeling in Wireless Signal Tracking Analysis
Jul 2009
Fuzzy logic modelling can be applied to evaluate the behaviour of Wireless Local Area Networks (WLAN) Received Signal Strength (RSS). The behavior study of WLAN signal strength is a pivotal part...
Provided by Hong Kong Polytechnic University
-
Whitepapers
Accurate Queuing Analysis of IEEE 802.11 MAC Layer
Oct 2008
In this paper, the authors develop an analytical model for IEEE 802.11 MAC protocol with arbitrary buffer size in unsaturated conditions. The model comprises of a generalized Markov chain model...
Provided by Institute of Electrical & Electronic Engineers
-
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
-
Whitepapers
Efficient Rate Adaptation With QoS Support for Wireless Networks
Oct 2008
Wireless LANs (WLANs) suffer degrading performance when operating within domestic areas due to multiple reasons such as: multi-path, fading, path loss and user mobility. To overcome this,...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Multi-Scenario Based Call Admission Control for Coexisting Heterogeneous Wireless Technologies
Oct 2008
It is widely recognized that next generation wireless networks will integrate heterogeneous wireless technologies. Now-a-days, the borders among the different wireless network technologies are...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
An Iterative ZigZag Decoding for Combating Collisions in Wireless Networks
Mar 2010
Business and entertainment increasingly depend on WLANs, as they provide flexibility of locations and low maintenance efforts. However in the presence of hidden terminals sender-receiver pairs...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Impact of Routing Protocol on Performance of Wireless Ad Hoc Vehicular Network
May 2012
Vehicular Ad Hoc NETwork (VANET) is an emerging new technology integrating ad hoc network, Wireless LAN (WLAN) and cellular technology to achieve intelligent inter-vehicle communications and...
Provided by Interscience Open Access Journals
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Whitepapers
Techniques for Load Balancing in Wireless LAN
May 2012
This suggests new strategies for balancing load in a wireless network connected in star topology. The loads are assigned to each processor using divisible load theory & Different techniques....
Provided by Interscience Open Access Journals
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Case Studies
3Com Case Study: St Michaels Collegiate College (Australia)
Jan 2009
St Michaels Collegiate College is the only Tasmanian school that services students with a PC-based curriculum. The existing school's structure could only connect two notebooks per classroom. If a...
Provided by 3Com
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Case Studies
125-Year-Old Private School Delivers Anytime/Anywhere Access to Academic Resources Using 3Com Wireless Switches & Access Points
Jan 2009
Founded in 1879 as Philadelphia's first private school for girls, Springside School is committed to giving its 639 college-bound students the very best education 21st century resources can...
Provided by 3Com
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Case Studies
Southampton School District Enhances Student Achievement Using 3Com Enterprise Data and Wireless Solutions
Jan 2009
Offering some of the finest educational facilities in Virginia, Southampton County School District has long been dedicated to educating students "to be successful learners and productive citizens...
Provided by 3Com
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Case Studies
3Com Switch 7700 Delivers Future-Proof Networking for One of UK's Oldest, Most Prestigious Schools
Jan 2009
One of the UK's oldest learning institutions, Sevenoaks School was founded in 1432 by William Sevenoke, then Mayor of London. School wanted to future-proof its network to allow new IP-based...
Provided by 3Com
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Case Studies
Interactive Museum Improves Communication, Brings History of Texas to Thousands of Visitors With New 3Com Secure Converged Network
Aug 2008
The Old Red Museum of Dallas County History & Culture in Dallas is located in a restored 1890's courthouse that was reopened last year after an extensive six-year restoration and renovation...
Provided by 3Com
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Case Studies
3Com Wireless Solutions Helps Educate Tomorrow's Environmental Experts
Jan 2009
SUNY College of Environmental Science and Forestry (ESF) located at Syracuse, New York, USA is providing higher education. ESF required a secured networked infrastructure to support communications...
Provided by 3Com
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Case Studies
Bahrain Ministry of Education Powers Nationwide e-Learning Initiative With 3Com Switched and Wireless Networks, Bahrain
Jan 2009
Bahrain's Ministry of Education (MoE) skillfully oversees 200 schools nationwide serving 116,000 students. Carrying this tradition of academic achievement into the 21st century, the MoE launched a...
Provided by 3Com
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Case Studies
Single 3Com Infrastructure Pays Off for TM R&D
Jan 2009
As the Research & Development arm of Malaysia's largest telecom operator, Telekom Malaysia Berhad (TM), Research & Development (R&D) develops new-generation network and broadband initiatives that...
Provided by 3Com
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Case Studies
3Com Switch 7700, Wireless, and Voice Solution Completes Academic Mission for Renown Swedish School
Jan 2009
Svedala is a large, top-tier public school serving 3,200 students - age six to 17 - who reside in the county of Svedala in south central Sweden. To best serve its students, Svedala Kommun requires...
Provided by 3Com
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Case Studies
Two Small Businesses Work as One With Converged 3Com "Connect and Forget" Network
Jan 2009
Most small companies are content to do one thing well, but Health Services Group, Inc. (HSG), excels in two distinct markets. HSGear.biz, an entirely online retailer, requires around-the-clock...
Provided by 3Com
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White Papers
Business Class 802.11n - Ready to Deploy
Apr 2009
Today's Web applications, IP video streams, VoIP systems and mobile devices are placing more and more demand on wireless networks. Every day, users at hotels, office lobbies, trade show floors,...
Provided by D-Link
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Case Studies
DiVitas Networks Mobility Component Completes College
Mar 2008
New College Durham is a large college but it has even grander ideas when it comes to using leading-edge technology. The college had a critical need to improve communication and increase...
Provided by DiVitas Networks
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White Papers
End-to-End Quality of Service Scheme for WLAN-Wired Networks
Jul 2008
Wireless local area network (WLAN) can be used to complement existing last-mile access networks such as ADSL and WiMAX, in the provision of telecommunication services. However, because of the use...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
History of Wireless Local Area Networks (WLANs) in the Unlicensed Bands
Apr 2008
A brief history of the development of WLAN standards and products is presented in the context of explaining how unlicensed spectrum regulations by the Federal Communications Commission (FCC) have...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Enabling Location Based Services in Data Centers Via Wireless USB Radios
Feb 2008
Major data centers routinely sport several tens of thousands of "Assets" (servers, switches, storage bricks, etc.) that usually go into standard slots in a rack or a chassis that fits the rack....
Provided by Intel
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White Papers
Value Proposition of Wireless LANs
Apr 2008
802.11-based wireless networks pay for themselves in a short amount of time with significant ongoing savings in networking, telephony, location-based services and office space costs. And they...
Provided by Halestar
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White Papers
60GHz: Opportunity for Gigabit WPAN and WLAN Convergence
Jan 2009
60 GHz is considered the most promising technology to deliver gigabit wireless for indoor communications. The paper proposes to integrate 60 GHz radio with the existing Wi-Fi radio in 2.4/5 GHz...
Provided by Intel
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White Papers
Inside 802.11n Wireless LANs: Practical Insights and Analysis
Dec 2007
The IEEE 802.11n Draft Standard specifies a next generation Wireless LAN (WLAN) technology promising nearly twice the reach and far better throughput than 802.11abg legacy devices. The technology...
Provided by Bitcricket
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White Papers
GA-Based Optimization of Sigma-Delta Modulators for Wireless Transceivers
Nov 2008
Over-sampling sigma-delta Analog-to-Digital Converters (ADCs) are one of the key building blocks of state of the art wireless transceivers. In sigma-delta modulator design, the scaling...
Provided by University of Bristol
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White Papers
Green WLANs: On-Demand WLAN Infrastructures
Oct 2008
Enterprise Wireless Local Area Networks (WLANs) that consist of a high-density of hundreds to thousands of Access Points (APs) are being deployed rapidly in corporate offices and university...
Provided by Intel
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White Papers
ASIC Implementation of Autocorrelation and CORDIC Algorithm for OFDM Based WLAN
Feb 2009
This paper deals with design and implementation of Autocorrelator and CORDIC algorithm for OFDM based WLAN on ASIC. The architectures of both Autocorrelator and CORDIC are processed through ASIC...
Provided by Sri Venkateswara University
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White Papers
Ten Factors to Consider Before Deploying WLAN 802.11n
May 2008
The introduction of WLAN 802.11n represents an exciting event for customers due to its greatly enhanced capabilities over the existing 802.11 a/b/g standards in terms of capacity, range and...
Provided by Nortel Networks
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White Papers
Performance Enhancement of WLAN Using 802.11n and MIMO Technology
Oct 2008
802.11n is IEEE wireless standards that significantly improve throughput and range of Wireless Local Area Networks (WLAN) compared with other 802.11 standards. It is expected to provide a...
Provided by Wipro Technologies
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White Papers
Seamless PPP Migration Between Disparate Wireless Networks
Sep 2008
This paper proposes a method of migrating PPP connections among heterogeneous networks without interrupting active sessions. The paper designs and implements extended PPP modules for the FreeBSD...
Provided by NTT DoCoMo
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White Papers
A Low-Power Monolithic CMOS Transceiver for 802.11b Wireless LANs
Jan 2009
Wireless LANs (WLANs) are currently seeing significant growth in the worldwide consumer electronics market. The high data rate (11 Mbps) WLAN standard IEEE 802.11b in unlicensed 2.4 GHz ISM band...
Provided by Institute of Physics and IOP Publishing
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White Papers
Achievable Bandwidth Estimation for Stations in Multi-Rate IEEE 802.11 WLAN Cells
Jun 2008
This paper analyzes the effect of multi-rate transmissions in a CSMA wireless LAN environment. Observations in a real testbed showed that bandwidth resources (in Bytes/s) are shared fairly among...
Provided by Technical University of Catalonia
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White Papers
A Novel Wire Antenna for GPS and WLAN Co-Design
Jul 2008
A high performance dual band monopole antenna fabricated using single folded wires as radiator is presented. A prototype of the proposed monopole antenna with a compact area size of 6mm×6mm×10mm...
Provided by National Taipei University of Technology
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Whitepapers
The End of the Wire: Rightsizing the Enterprise LAN
Jan 2009
The migration to wireless LAN is already well under way: many users already make Wi-Fi their primary connection to the corporate network. Indeed, user demand is a strong driver: where there is a...
Provided by Aruba Networks
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White Papers
Optimizing the Performance of Handoff Management in Wireless LANs
Jul 2008
As the radio range of Access Point (AP) in a Wireless Local Area Network (WLAN) is about 35 meters, Mobile Nodes (MNs) have to frequently undergo a handoff process when they move beyond the radio...
Provided by Ecole Polytechnique de Montreal
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White Papers
Effects of Fixed Point FFT on the Performance of OFDM in Wireless LAN
Feb 2008
This paper analyzes the effects of fixed point Fast Fourier Transform (FFT) computation in Orthogonal Frequency Division Multiplexing (OFDM) for Wireless Local Area Network (WLAN) application. The...
Provided by National Institute of Technology, Rourkela (NIT)
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White Papers
Digital Automatic Gain Control Integrated on WLAN Platform
Jul 2008
This paper presents a solution for DAGC (Digital Automatic Gain Control) in WLAN receivers compatible to IEEE 802.11a/g standard. Those standards define communication in 5/2.4 GHz band using...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Analysis of Variation in IEEE802.11k Channel Load Measurements for Neighbouring WLAN Systems
Jun 2008
This paper focuses on analysing the variation in IEEE802.11k channel load measurements for neighbouring WLAN systems. The channel load functionality was implemented in the QualNet simulation tool,...
Provided by University College Dublin
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White Papers
An Architecture for Extensible Wireless LANs
Sep 2008
Off late wireless LANs are a mess. The current 802.11 family of WLANs involves a jumble of competing standards, and a slew of implementations with varying degrees of interoperability and...
Provided by Harvard University
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White Papers
Multi-User Adaptive Resource Allocation Scheme for WLAN OFDM-MIMO Transmission
Aug 2008
Orthogonal Frequency Division Multiplexing (OFDM) has recently been proposed for use in high data-rate wireless systems. OFDM has an important property of spectrum utilization technique that...
Provided by PSG College of Technology
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White Papers
Raptor Code-Based Video Multicast Over IEEE 802.11 WLAN
Jun 2008
This paper applies a Raptor code-based forward error correcting scheme right above the Medium Access Control (MAC) layer in order to ensure the reliability of the video multicast over IEEE 802.11...
Provided by Seoul National University
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White Papers
Two Element Planar Dipole Array Antenna for Wireless LAN
Mar 2009
Off late, the demand for Broadband Internet Connection has been expanded. However, a lot of digital divide areas still exist. In these areas, the introduction of optical fiber and public wireless...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Numerical Estimation of Electric Field Distribution in Wireless Office LANs Using the FDTD Method
Jul 2008
The purpose of this study is to develop accurate and reliable estimation method of Electromagnetic field distributions in practical environments including humans absorption effects. In this paper,...
Provided by Hokkaido University
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White Papers
Providing Guest Access in the Enterprise Environment Using the Cisco WLAN Controller
Jun 2008
Imagine inviting a customer to one's organization for a meeting. In the course of the meeting, the guest wishes to use the company's new service web site to check on the status of a shipment, or...
Provided by TESSCO
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White Papers
Factors Affecting Wireless LAN Performance
May 2008
Current widely-deployed Wireless LAN technologies - primarily 802.11B & G - provide great performance in the home environment, with few users, low traffic levels and the usually more limiting...
Provided by Networks First
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White Papers
WiGEE: A Hybrid Optical/Wireless Gigabit WLAN
Dec 2007
This paper proposes a novel architecture integrating a fiber optic infrastructure with 60 GHz wireless transmission, capable of delivering a data rate up to 1 Gbps per cell in indoor environment....
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Laboratory Assessment of WLAN Performance Degradation in the Presence of Impulsive Noise
Jun 2008
A laboratory test to assess the impact of impulsive noise on the performance of WLAN equipment is described. The test is put in the context of a larger programme of work to assess the performance...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Dynamic Channel Assignment in IEEE 802.11g
Jun 2008
In this paper, the authors propose a dynamic channel-assignment algorithm which minimizes the total interferences between Access Points (APs) of a Wireless Local Area Network (WLAN), while...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Improved Axial-Mode-Helical-Antenna Impedance Matching Utilizing Triangular Copper Strip for 2.4- GHz WLAN
Jun 2008
In this paper, impedance matching for a PVC-tube helical antenna operating at the frequency of 2.4 GHz is experimentally investigated. The helical wire is wound around a Poly-Vinyl Chloride (PVC)...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Channel Occupancy Time Based TCP Rate Control for IEEE 802.11 DCF
Jun 2008
In multi-rate IEEE 802.11 wireless LAN, when multiple stations transmit frames at different data rates, the Basic Service Set (BSS) suffers from "Performance anomaly" problem. In this paper, to...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A Throughput-Based Radio Channel Allocation Algorithm for WLANs With Multiple APs
Jun 2008
Usually, the Radio Channel Allocation (RCA) problems of Wireless LANs (WLANs) are solved by using various heuristic methods. However, it is not clear that the minmax problem is an NP-hard problem...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A New Method for Measuring Interference Between UWB and Wireless LAN Systems
Jun 2008
A new method for experimentally simulating the interference between UWB (Ultra WideBand) and WLAN (Wireless LAN) systems is presented. The method employs a GTEM (Gigahertz Transverse...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Study and Design of QoS-Based VoIP Over Wireless LAN
Jun 2008
Two of the major developments reshaping the telecommunications landscape are mobile wireless connectivity and the migration of voice telephone services to IP technology. These two ideas come...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Efficient Mobility Management Protocols for Integrated UMTS and Outdoor WLAN 802.11g
Jun 2008
Next Generation (4G) network can be achieved through the interworking of several existing architecture to form a seamless global network. The need for a high speed (mobility) support, ubiquitous...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Game-Theoretic Cross-Layer Design in WLANs
Jun 2008
In this paper, an incompletely cooperative game-theoretic MAC protocol is presented to improve the performance of WLANs. Firstly, each node estimates the current game state upon running CSMA/CA....
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
WLAN/WDS Performance Using Directive Antennas in Highly Mobile Scenarios: Experimental Results
Jun 2008
This paper presents experimental results from a series of IEEE 802.11g studies to investigate the performance of vehicular to roadside wireless communications. In particular, two high-gain...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
A Simple and Fast Detect and Avoid Algorithm for Non-Coherent Multiband Impulse Radio UWB
Jul 2008
In this paper, the authors present a simple and fast Detect And Avoid (DAA) algorithm for non-coherent multiband impulse radio UWB. By independent parallelized interception of all subbands, this...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Low Profile, Dual Polarised Antenna for Aeronautical and Land Mobile Satcom
Jun 2008
Two of the major developments reshaping the telecommunications landscape are mobile wireless connectivity and the migration of voice telephone services to IP technology. These two ideas come...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Using a Cell-Based WLAN Infrastructure Design for Resource-Effective and Accurate Positioning
Dec 2009
A large scale WLAN infrastructure requires the placement of many thousands of Access Points (APs). The current approach is to deploy these in an empirical and ad-hoc manner. However, this...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Using the Newton Trust-Region Method to Localize in WLAN Environment
Dec 2009
Localization systems for indoor areas using the existing Wireless Local Area Network (WLAN) infrastructure have been suggested recently. However, the current systems are not satisfactory. Common...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Fuzzy Topographic Modeling in Wireless Signal Tracking Analysis
Jul 2009
Fuzzy logic modelling can be applied to evaluate the behaviour of Wireless Local Area Networks (WLAN) Received Signal Strength (RSS). The behavior study of WLAN signal strength is a pivotal part...
Provided by Hong Kong Polytechnic University
-
Whitepapers
Accurate Queuing Analysis of IEEE 802.11 MAC Layer
Oct 2008
In this paper, the authors develop an analytical model for IEEE 802.11 MAC protocol with arbitrary buffer size in unsaturated conditions. The model comprises of a generalized Markov chain model...
Provided by Institute of Electrical & Electronic Engineers
-
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
-
Whitepapers
Efficient Rate Adaptation With QoS Support for Wireless Networks
Oct 2008
Wireless LANs (WLANs) suffer degrading performance when operating within domestic areas due to multiple reasons such as: multi-path, fading, path loss and user mobility. To overcome this,...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Multi-Scenario Based Call Admission Control for Coexisting Heterogeneous Wireless Technologies
Oct 2008
It is widely recognized that next generation wireless networks will integrate heterogeneous wireless technologies. Now-a-days, the borders among the different wireless network technologies are...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
An Iterative ZigZag Decoding for Combating Collisions in Wireless Networks
Mar 2010
Business and entertainment increasingly depend on WLANs, as they provide flexibility of locations and low maintenance efforts. However in the presence of hidden terminals sender-receiver pairs...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Impact of Routing Protocol on Performance of Wireless Ad Hoc Vehicular Network
May 2012
Vehicular Ad Hoc NETwork (VANET) is an emerging new technology integrating ad hoc network, Wireless LAN (WLAN) and cellular technology to achieve intelligent inter-vehicle communications and...
Provided by Interscience Open Access Journals
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Whitepapers
Techniques for Load Balancing in Wireless LAN
May 2012
This suggests new strategies for balancing load in a wireless network connected in star topology. The loads are assigned to each processor using divisible load theory & Different techniques....
Provided by Interscience Open Access Journals
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Whitepapers
A Call Admission Control Scheme for Multimedia Support Over IEEE 802.11 Wireless LANs
May 2012
These days there is an increasing interest for VoIP over wireless LANs. QoS support for real-time services like voice in the IEEE 802.11 WLAN is an important issue. Since, IEEE 802.11 uses...
Provided by Interscience Open Access Journals
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Whitepapers
A Study of Viterbi Decoder Algorithm for Wireless LANs
Jun 2012
Viterbi Decoders are commonly used to decode convolutional codes in communications systems. This Viterbi Decoder is a fully parallel implementation which gives fast data throughput. The decoder is...
Provided by International Journal of Computer Technology and Applications
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Whitepapers
On Regulation of Spectrum Sharing: An Analysis Supporting a Distributed Pilot Channel
May 2009
This paper argues in favor of introducing a standardized distributed pilot channel to improve spectrum sharing between heterogeneous technologies in unlicensed and possibly licensed bands with...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Capacity Enhancement in WLAN Using MIMO
Aug 2010
Increasing demand for high-performance 4G broadband wireless is enabled by the use of multiple antennas at both transmitter and receiver ends. Multiple antenna technologies enable high capacities...
Provided by Interscience Open Access Journals
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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
Effects of Jammer and Nonlinear Amplifiers in MIMO-OFDM With Application to 802.11n WLAN
Sep 2008
It is well known that Orthogonal Frequency Division Multiplexing (OFDM) produces high Peak to Average Power Ratio (PAPR) and is highly sensitive to both frequency offset and phase noise. The high...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Design of WLAN RF Front End LNA for Noise & Gain Improvement
Jul 2012
The design of a Low Noise Amplifier (LNA) in Radio Frequency (RF) circuit requires the trade-off many importance characteristics such as gain, Noise Figure (NF), stability, power consumption and...
Provided by International Journal of Advanced Research in Computer Engineering & Technology
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Whitepapers
Channel Estimation and Performance Evaluation of STBC With Channel Coding
May 2012
Now-a-days as the people can see that wireless systems are gaining importance in day to day life. These networks have become an essential part of common man's life. The most widely used wireless...
Provided by IJERT - International Journal of Engineering Research and Technology
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Whitepapers
Performance Analysis of LDPC Coded WLAN Physical Layer Under BPSK and 16-QAM
Jun 2012
WLAN plays an important role as a complement to the existing or planned cellular networks which can offer high speed voice, video and data service up to the customer end. The aim of this paper is...
Provided by International Journal of Advanced Research in Computer Engineering & Technology
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Whitepapers
Design and Simulation Based Studies of a Dual Band Antenna for WLAN/WiMax Application
Jun 2012
In this rapid changing world in wireless communication systems, multiband antenna has been playing a very important role for wireless service requirements. Rectangular line slot designs of a dual...
Provided by International Journal of Advanced Research in Computer Engineering & Technology
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Whitepapers
A 2.4 GHZ Microstrip Patch Antenna With a Single Slot for WLAN Application
Jun 2012
A newly design technique for enhancing Bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This paper presents a novel wideband slot antenna. The design...
Provided by International Journal of Advanced Research in Computer Engineering & Technology
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Whitepapers
On the Performance of Packet Aggregation in IEEE 802.11ac MU-MIMO WLANs
Jul 2012
Multi-user spatial multiplexing combined with packet aggregation can significantly increase the performance of Wireless Local Area Networks (WLANs). In this paper, the authors present and evaluate...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Instant Mobile Device Management
Aug 2012
MaaS360 instant mobile device management helps IT administrators streamline the process to provision, manage and secure today's expanding suite of smartphones and tablets, all from a single...
Provided by Fiberlink Communications
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Whitepapers
Mobile Device Management: Your Guide to the Essentials and Beyond
Aug 2012
Most businesses are confronting how to fully embrace mobile devices beyond their executive and sales teams. Users are choosing the Android and iPhone experience over the largely...
Provided by Fiberlink Communications
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Whitepapers
Compact Microstrip Antenna for WLAN and H-LAN Communication
Jul 2012
A single layer, single feed compact rectangular antenna is proposed. Resonant frequency has been reduced drastically by cutting unequal rectangular slots at the edge of the patch & a circle in the...
Provided by International Journal of Soft Computing and Engineering (IJSCE)
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Whitepapers
Design and Simulation of Triangular Arm Antenna for WLAN Application
Jun 2012
In this paper, A newly design technique for enhancing Bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This paper presents a novel wideband...
Provided by International Journal of Engineering and Advanced Technology (IJEAT)
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Whitepapers
Convexity Conditions for 802.11 WLANs
Jun 2012
In this paper, the authors characterise the maximal convex subsets of the (non-convex) rate region in 802.11 WLANs. In addition to being of intrinsic interest as a fundamental property of 802.11...
Provided by Cornell University
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Whitepapers
Scheduling for Next Generation Wlans: Filling the Gap Between Offered and Observed Data Rates
Jun 2009
In wireless networks, opportunistic scheduling is used to increase system throughput by exploiting multi-user diversity. Although recent advances have increased physical layer data rates supported...
Provided by John Wiley & Sons
