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wireless lan
(1549 results)-
White Papers
Balancing Uplink and Downlink Delay of VoIP Traffic in WLANs Using Adaptive Priority Control (APC)
Jan 2011
In IEEE 802.11 wireless networks, the downlink delay rises as the number of VoIP nodes increases while the uplink delay remains small due to the same chance of media access between nodes and the...
Provided by Columbia University
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White Papers
Call Admission Control in IEEE 802.11 WLANs Using QP-CAT
Jan 2008
As IEEE 802.11 networks in a BSS are increasingly used to carry VoIP, concerns about QoS arise. The overall delay of all VoIP flows drastically increases when the number of VoIP sources approaches...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
A Novel Access Method for Supporting Absolute and Proportional Priorities in 802.11 WLANs
Jan 2008
Many researchers have addressed the problem of QoS differentiation in 802.11 wireless networks, however no method proposed so far benefits from all desirable properties: high aggregate throughput...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Proximity Breeds Danger: Emerging Threats in Metro-Area Wireless Networks
Jun 2007
The growing popularity of wireless networks and mobile devices is starting to attract unwanted attention especially as potential targets for malicious activities reach critical mass. In this...
Provided by University of California
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White Papers
Cache-Aware Optimization of BAN Applications
Oct 2008
Body-Area sensor network or BAN-based health monitoring is increasingly becoming a popular alternative to traditional wired bio-monitoring techniques. However, most bio-monitoring applications...
Provided by Association for Computing Machinery
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White Papers
How Physical Carrier Sense Affects System Throughput in IEEE 802.11 Wireless Networks
Jan 2008
In recent years, wireless ad hoc networks have become increasingly popular in both military and civilian applications due to their capability of building networks without the need for a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Prioritized Repeated Eliminations Multiple Access: A Novel Protocol for Wireless Networks
Jan 2008
A new and simple MAC protocol is proposed. Each node transmits a burst with length sampled from a geometric distribution with parameter q followed by a carrier sense slot. A node repeats the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Index Policies for Real-Time Multicast Scheduling for Wireless Broadcast Systems
Jan 2008
Motivated by the increasing usage of wireless broadcast networks for multicast real-time applications like video, this paper considers a canonical real-time multicast scheduling problem for a...
Provided by Institute of Electrical and Electronics Engineers
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Whitepapers
Characterizing Mobility and Network Usage in a Corporate Wireless Local-Area Network
Jan 2011
Wireless local-area networks are becoming increasingly popular. They are commonplace on university campuses and inside corporations, and they have started to appear in public areas. It is thus...
Provided by IBM
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White Papers
All Bits Are Not Equal - A Study of IEEE 802.11 Communication Bit Errors
May 2009
In IEEE 802.11 Wireless LAN (WLAN) systems, techniques such as acknowledgement, retransmissions, and transmission rate adaptation, are frame-level mechanisms designed for combating transmission...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Antler: A Multi-Tiered Approach to Automated Wireless Network Management
Jul 2008
Management of a large scale wireless network, be it an infrastructured WLAN or a metro-scale mesh network, presents several challenges. Troubleshooting problems related to wireless access in these...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Alpha Coverage: Bounding the Interconnection Gap for Vehicular Internet Access
May 2009
Vehicular Internet access via open WLAN Access Points (APs) has been demonstrated to be a feasible solution to provide opportunistic data service to moving vehicles. Using an in situ deployment,...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Enhanced Spatial Reuse in Multi-Cell WLANs
May 2009
When IEEE 802.11 Access Points (APs) share the same channel in a multi-cell WLAN, their downlink transmissions can interfere. Typically, an AP whose scheduled transmission to some user is blocked...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Towards Adaptive Beamforming in Indoor Wireless Networks: An Experimental Approach
May 2009
Several research works have argued that adaptive beamforming has the potential to realize the high spectral efficiency requirements of next-generation wireless standards, and is especially...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Methodology for Securing Wireless LANs Against Wormhole Attack
May 2009
Wormhole attacks enable an attacker with limited Resources and no cryptographic material to wreak havoc on wireless networks. Initial research focused that this attack is possible only on Adhoc...
Provided by Academy Publisher
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White Papers
Sniffer Channel Selection for Monitoring Wireless LANs
May 2009
Wireless sniffers are often used to monitor APs in Wireless LANs (WLANs) for network management, fault detection, traffic characterization, and optimizing deployment. It is cost effective to...
Provided by University of Connecticut
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White Papers
Enhancing Downlink Performance in Wireless Networks by Simultaneous Multiple Packet Transmission
May 2009
Wireless access networks have been more and more widely used in recent years, since compared to the wired networks, wireless networks are easier to install and use. Due to the tremendous practical...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Efficient Partner Assignment Algorithm for Improving the Performance of 802.11 WLAN
Nov 2009
In this paper, a novel idea of user cooperation in wireless networks has been exploited to improve the performance of the IEEE 802.11 protocol. A crucial challenge in the implementation of a...
Provided by Academy Publisher
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White Papers
An Adaptive Scheduling for QoS Enhancement Mechanism in IEEE 802.11 WLAN
Apr 2010
For the problem of QoS in the IEEE802.11DCF, proposed an enhanced adaptive scheduling distributed EASDCF mechanism. Through the largest contention window and retry times, this mechanism provides...
Provided by Academy Publisher
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White Papers
Substantiating Timing and Behavioral Anomalies in Wireless LANs Using GCL
Nov 2009
With the increasing dependence on Wireless LANs (WLANs), businesses, educational institutions and other organizations are in need of a reliable security mechanism. The latest security protocol,...
Provided by Academy Publisher
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White Papers
Treatment-Based Traffic Signatures
Jun 2007
Today's Wireless Local Area Networks (WLANs) concurrently support a plethora of user applications with diverse connectivity and Quality of Service (QoS) requirements. Wireless traffic flows...
Provided by Worcester Polytechnic Institute
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White Papers
The One-Sender-Multiple-Receiver Technique and Downlink Packet Scheduling in Wireless LANs
Feb 2009
In this paper, the authors study the One-Sender-Multiple-Receiver (OSMR) transmission technique, which allows a sender to send to multiple receivers on the same frequency simultaneously by...
Provided by Florida State University
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White Papers
Extended Abstract: Interference Mitigation in Enterprise WLANs Through Speculative Scheduling
Sep 2007
Wireless LANs are commonplace installations in enterprise environments. Their ease of use and deployment, however, are accompanied by a difficulty in their management and security. Proposed...
Provided by Association for Computing Machinery
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White Papers
A Survey of Context-Aware Mobile Computing Research
Feb 2008
Context-aware computing is a mobile computing paradigm in which applications can discover and take advantage of contextual information (such as user location, time of day, nearby people and...
Provided by Dartmouth College
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Whitepapers
A New Band AMC Scheme for Military Use of Indoor Mobile WiMAX System
Sep 2008
Indoor wireless communication systems have been developed to improve cell coverage and throughput with low cost in indoor environment. Among several indoor wireless communication systems such as...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
A Cyber Physical Systems Solution for Real-time and Reliable Information Dissemination in Intelligent Transportation Systems
Jan 2010
Timely and reliable dissemination of traffic-related information to drivers is a key property that Intelligent Transportation Systems (ITS) should support. Numerous impediments, however, lead to...
Provided by Air Force Research Laboratory
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White Papers
Wireless Traffic: The Failure of CBR Modeling
Oct 2009
When new wireless technologies are deployed and subjected to real usage patterns, unforeseen performance problems inevitably seem to arise, to be fixed only in later generations. Why do these...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Congestion-Aware Rate Adaptation in Wireless Networks: A Measurement-Driven Approach
Mar 2008
Traditional rate adaptation solutions for IEEE 802.11 wireless networks perform poorly in congested networks. Measurement studies show that congestion in a wireless network leads to the use of...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Active Behavioral Fingerprinting of Wireless Devices
Apr 2008
The authors propose a simple active method for discovering facts about the chipset, the firmware or the driver of an 802.11 wireless device by observing its responses (or lack thereof) to a series...
Provided by Association for Computing Machinery
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White Papers
Coordinated Sampling to Improve the Efficiency of Wireless Network Monitoring
Jul 2007
Wireless networks are deployed in home, university, business, military and hospital environments, and are increasingly used for mission-critical applications like VoIP or financial applications....
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Security and Privacy in Emerging Wireless Networks
May 2010
Wireless communication continues to make in-roads into many facets of the society and gradually becomes more and more ubiquitous. While, in the past, wireless communication (as well as mobility)...
Provided by University of Michigan
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White Papers
Link-Layer Encryption Effect on Achievable Capacity in Wireless Network Coding
Mar 2010
In recent years, network coding has been enthusiastically promoted for certain wireless settings as a means of improving throughput and achieving higher capacity. Naturally, such proposals focused...
Provided by University of California
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White Papers
On Backoff in Fading Wireless Channels
Jun 2008
The authors consider the impact of transmission errors on the backoff algorithm behavior in the IEEE 802.11 protocol. Specifically, since the backoff algorithm assumes that all packet losses are...
Provided by Carnegie Mellon University
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White Papers
A Measurement Study on Link Capacity of a High Stress IEEE 802.11b/g Network
Jul 2008
The paper presents results from a link capacity measurement study conducted over an IEEE 802.11b/g network with highly stressed radio propagation conditions in a football stadium. Existing...
Provided by Clemson University
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White Papers
Shifted Known Symbol Padding for Efficient Data Communication in a WLAN Context
Sep 2007
To allow for a computationally efficient equalization scheme for the frequency selective transmission channels encountered in Wireless Local Area Network (WLAN) applications, Cyclic Prefix (CP)...
Provided by Springer Science+Business Media
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White Papers
Throughput Analysis in 802.11 WLANs Using TCP
Nov 2009
There is a vast literature on the throughput analysis of the IEEE 802.11 Media Access Control (MAC) protocol. However, very little has been done on investigating the interplay between the...
Provided by Amc
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White Papers
Wireless Opportunistic Podcasting: Implementation and Design Tradeoffs
Sep 2007
Podcasting has become a very popular and successful Internet service in a short time. This success illustrates the interest for participatory broadcasting, but podcasting is alas only available...
Provided by Association for Computing Machinery
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White Papers
Fairness Provision in the IEEE 802.11e Infrastructure Basic Service Set
Sep 2007
Most of the deployed IEEE 802.11e Wireless Local Area Networks (WLANs) use infrastructure Basic Service Set (BSS) in which an Access Point (AP) serves as a gateway between wired and wireless...
Provided by University of California
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White Papers
Mining Behavioral Groups in Large Wireless LANs
Jun 2007
One vision of future wireless networks is that they will be deeply integrated and embedded in the lives and will involve the use of personalized mobile devices. User behavior in such networks is...
Provided by University of Florida
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White Papers
A Dynamic Multimedia User-Weight Classification Scheme for IEEE_802.11 WLANs
Mar 2011
In this paper the authors expose a dynamic traffic-classification scheme to support multimedia applications such as voice and broadband video transmissions over IEEE 802.11 Wireless Local Area...
Provided by Texas A&M University
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Whitepapers
A Double-Loop Receiver-Initiated Medium Access Control Scheme for Data Dissemination Services With Packet Pre-Downloading
Jan 2011
In this paper, the authors consider a DTN/WLAN integrated network where high-mobility nomadic nodes form a Delay Tolerant Network (DTN) and low-mobility local nodes reside in the coverage area of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimal Scheduling for Roadside WLANs With Pre-Downloaded Messages
Jan 2011
In this paper, data dissemination services are discussed in the context of Vehicular Ad hoc NETworks (VANETs). In order to improve the efficiency of data dissemination, messages are network coded...
Provided by University of Waterloo
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Whitepapers
Double-Loop Receiver-Initiated MAC for Cooperative Data Dissemination Via Roadside WLANs
Jun 2012
In this paper, the authors investigate data dissemination in Delay Tolerant Networks (DTNs) via RoadSide Wireless Local Area Networks (RS-WLANs). The data dissemination service is destined to a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
DS-PAM UWB System Using Non-Linear Chirp Waveform
Jun 2007
The authors propose a Direct-Sequence Pulse-Amplitude Modulation (DS-PAM) Ultra-WideBand (UWB) system which employs a non-linear chirp waveform instead of the conventional Gaussian monocycle in...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Broadbanding of a Planar Antenna With Three Frequency Bands and Its Application
Dec 2007
This paper describes a line element planar antenna with three frequency bands. To obtain broadband characteristics, a modified planar antenna that has semielliptical elements based on the...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Increase Bandwidth for Circular Microstrip Patch Antenna
Feb 2012
In this paper a design and performance of a circularly microstrip patch antenna, for the application in Wireless Local Area Network (WLAN), are reported here. The antenna is a proximity coupled...
Provided by International Journal of Computer Technology and Electronics Engineering
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Whitepapers
Mobile Agent for Distributed Intrusion Detection System in Distributed System
Feb 2012
Due to the rapid growth of the network application, new kinds of network attacks are emerging endlessly. So it is critical to protect the networks from attackers and the Intrusion detection...
Provided by International Journal of Computer Technology and Electronics Engineering
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Whitepapers
A Study on MAC Protocol for 600 Mbps 4x2 MIMO-OFDM Wireless LAN System
Feb 2008
600 Mbps data rate with 20 m of propagation distance has been achieved in Multiple-Input Multiple-Output (MIMO) Wireless LAN (WLAN) system by using a Group Layered Space-Time (GLST) algorithm....
Provided by Kyushu Institute of Technology
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Whitepapers
Clustering Algorithm for Hidden Node Problem In Infrastructure Mode IEEE 802.11 Wireless LANs
Feb 2008
To support the wireless internet services especially in the hot spot areas such as schools, hospitals, homes, and conference rooms, IEEE 802.11 wireless LAN systems have been widely implemented as...
Provided by Dong-A university
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Whitepapers
Saturation Throughput Affected by the Ratio of Direct-to-Diffuse Signal Power in the Wireless LAN
Feb 2008
This paper analyzes saturation throughput variation quantitatively over Rayleigh or Ricean fading channels under the CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance)-based DCF...
Provided by California State University
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Whitepapers
Design of 600Mbps 4x2 MIMO-OFDM Wireless LAN System and Its FPGA Implementation
Feb 2008
This paper presents a model-based Register Transfer Level (RTL) design of a 4x2 Multiple-Inputs Multiple-Outputs (MIMO)-Orthogonal Frequency Domain Multiplexing (OFDM) wireless communication...
Provided by Kyushu Institute of Technology
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Whitepapers
2.4 GHz WLAN InGaP/GaAs Power Amplifier With Temperature Compensation Technique
Oct 2009
Recently, the Wireless Local Area Network (WLAN) market has grown rapidly due to the increasing demand for high data rates. It requires a highly linear Power Amplifier (PA) because of a high...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Multiband Meandered Monopole Antenna for Mobile Applications
Jun 2010
A multiband meandered monopole antenna is proposed for Digital Video Broadcasting Handheld (DVB-H), global positioning system, personal communications service, Wireless broadband (Wibro), and...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Implementation of Location Determination in a Wireless Local Area Network (WLAN) Environment
Feb 2008
Wireless Local Area Network (WLAN) is developed to complement the wired network. Various standards for WLAN exist, but the most common standards are IEEE 802.11b and 802.11g. Since, WLAN provides...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
Energy-Efficiency of Cooperative Sensing Schemes in Ad Hoc WLAN Cognitive Radios
Apr 2012
In cognitive radio networks, the secondary users need to coordinate among themselves to reap the benefits of cooperative spectrum sensing. In this paper, the authors study and analyze the energy...
Provided by Wichita State University
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Whitepapers
Relative Fairness and Optimized Throughput for Mobile Ad hoc Networks
Apr 2008
Although IEEE 802.11 provides several transmission rates, a suitable rate adaptation taking into account the relative fairness among all competitive stations, according to the underlying channel...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Estimating Path Loss in Wireless Local Area Networks Using Ordinary Kriging
Nov 2010
This paper introduces ordinary kriging as a new tool to predict network coverage in wireless local area networks. The proposed approach aims to reduce the cost of active site surveys by estimating...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Analysis of Wi-Fi Communication and WiMAX Network Entry Over Single Radios
Mar 2012
Future wireless mobile devices will have to support a variety of heterogeneous access technologies while having a limited number of transceiver chains. One of the most challenging tasks remains...
Provided by Technische Universität Berlin
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Whitepapers
Performance Evaluation of Selection Schemes for Offloading Traffic to IEEE 802.11 Hotspots
Mar 2012
Offloading data traffic to IEEE 802.11 hotspots is one of the key techniques with which mobile operators aim at dealing with the increasing traffic demand of their users in cellular networks....
Provided by Technische Universität Berlin
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Whitepapers
Deploying and Managing Mobile Apps for Field Service Workers - 5 Key Questions to Ask
Jun 2012
"Smartphone adoption in the enterprise (both personal-liable and corporate-liable) will have reached 162 million units by the end 2011 - and by 2014, the research firm predicts, the market for...
Provided by ClickSoftware
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Whitepapers
Quantum Cryptography With Key Distribution in Wireless Networks on Privacy Amplification
Dec 2011
Wireless networks have become one of the most extensively used communication systems in the world. Providing secure communication for wireless networks has become one of the main concerns....
Provided by International Journal of Computer Networks and Wireless Communications (IJCNWC)
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Whitepapers
A Study on Minimization of 2G/3G Handover Failure
Apr 2012
One of the most interesting 3G networks feature is their integration with the 2G networks. It provides seamless End to-End services. Current widely deployed 2G and 3G networks provide enabling...
Provided by International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
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Whitepapers
Enhancement of QoS Performance in Wireless LAN: Analysis
Mar 2012
Wireless Local Area Network (WLAN) has become more popular in recent years. With increase in demand users are expecting Quality of Service (QoS) for multimedia services in WLAN. To improve...
Provided by International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
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Whitepapers
Deployment and Evaluation of IEEE 802.11 Based Wireless Mesh Networks in Campus Environments
Jul 2011
The traditional wireless networks cannot handle new requirements posed on the system. To become independent of backbone networks leading to cheap deployments, the traditional single-hop approach...
Provided by PEC University of Technology
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Whitepapers
Opportunistic Scheduling Using an Enhanced Channel State Information Update Scheme for WLAN Systems With DQCA
Nov 2007
Cross-layer opportunistic scheduling on DQCA-based WLAN systems yields high performance results. This paper emphasizes the need for accurate Channel State Information (CSI) and presents an...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cross-Layer Enhancement for WLAN Systems With Heterogeneous Traffic Based on DQCA
Nov 2007
Voice transmission over WLAN and Cross-Layer optimization are emerging research topics. This paper proposes two novel Cross-Layer mechanisms to be included in a WLAN system where the offered...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Characterization and Comparison of Skype Behavior in Wired and Wireless Network Scenarios
Nov 2007
This paper analyzes the call quality perceived by Skype users in both fixed and mobile environments. Specifically, LAN, WLAN, ADSL and UMTS network connections are evaluated by means of both PCs...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Near-Optimum Cross-Layered Distributed Queuing Protocol for Wireless LAN
Nov 2008
Distributed Queuing Collision Avoidance (DQCA) is a distributed MAC protocol for WLAN systems that offers near optimum performance. The protocol implements a reservation scheme that ensures...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Methodology for Traffic Load Estimation in WLANs Based on Real Traces
Jun 2008
This paper presents a methodology to estimate traffic load parameters in a WLAN network consisting of a large number of Access Points (APs). The methodology takes into account the high variability...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Analysis of the Distributed Queuing Collision Avoidance (DQCA) Protocol With Link Adaptation
Dec 2009
DQCA is a near-optimum Medium Access Control (MAC) protocol designed for Wireless Local Access Networks (WLANs). The protocol operates as a random access scheme under low traffic load and switches...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Design Considerations for Measuring Utilization in Hybrid Paths Using Delay Measurements
Mar 2010
Recent research results have shown how measurements of bandwidth metrics using traditional tools and techniques have to be reconsidered in the presence of WLAN links. The main reason behind this...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
User-Driven Call Admission Control for VoIP Over WLAN With a Neural Network Based Cognitive Engine
Oct 2010
In this paper, the authors deal with the problem of user-driven Call Admission Control for Voice over IP communications in a Wireless LAN environment. They argue that state-of-the-art solutions to...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Framework for IMS Service Scenario Implementation
Oct 2010
This paper presents an experimental framework for implementation of an IMS/NGN reference service scenario by means of open source software. Multiple service enablers are deployed to build this...
Provided by Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
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Whitepapers
Distributed Call Admission Control for VoIP Over 802.11 WLANs Based on Channel Load Estimation
Feb 2010
Call Admission Control (CAC) is recognized as one of the key strategies to achieve satisfactory QoS support for VoIP over IEEE 802.11 WLANs. However, most of the prior CAC solutions for VoIP over...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
WLAN-WiMAX Vertical Handover Hybrid Satisfaction Mechanism
Dec 2011
Handover is the key enabling option to guarantee seamless mobility within any wireless communication system, where the inter-systems handover option has recently acquired large importance, both in...
Provided by University of Jordan
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Whitepapers
Experimental Characterization of VoIP Traffic Over IEEE 802.11 Wireless LANs
Feb 2011
Voice over Internet Protocol (VoIP) technology has become a potential alternative to and also a supplement of the traditional telephony systems over the Public Switched Telephone Network (PSTN),...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Hybrid Access Techniques for Densely Populated Wireless Local Area Networks
Apr 2011
The IEEE 802.11p Task Group has recently released a new standard for Wireless Access in Vehicular Environments (WAVE). It constitutes an amendment to the 802.11 for Wireless Local Area Networks...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Characterizing WLAN Medium Utilization for Radio Environment Maps
Jun 2011
This paper explores the possibility to use the medium utilization as a metric to be included in Radio Environment Maps (REMs) of WLAN networks. The main objective is to build REMs that go beyond...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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White Papers
Cognitive Call Admission Control for VoIP Over IEEE 802.11 Using Bayesian Networks
Jan 2012
In this paper, the authors address the problem of provisioning Quality of Service (QoS) to Voice over IP applications in a Wireless LAN scenario based on the IEEE 802.11 standard. They propose the...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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White Papers
Interdependency Measure and Analysis for Cross-Layer Design in WLAN
Dec 2011
Interdependency among system parameters may significantly affect the cross-layer design and optimization performance of wireless networks. However, it is very difficult to derive the...
Provided by AICIT
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White Papers
A Measurement Study on Link Capacity of a High Stress IEEE 802.11b/g Network
Jul 2008
The paper presents results from a link capacity measurement study conducted over an IEEE 802.11b/g network with highly stressed radio propagation conditions in a football stadium. Existing...
Provided by Clemson University
-
White Papers
Shifted Known Symbol Padding for Efficient Data Communication in a WLAN Context
Sep 2007
To allow for a computationally efficient equalization scheme for the frequency selective transmission channels encountered in Wireless Local Area Network (WLAN) applications, Cyclic Prefix (CP)...
Provided by Springer Science+Business Media
-
White Papers
Throughput Analysis in 802.11 WLANs Using TCP
Nov 2009
There is a vast literature on the throughput analysis of the IEEE 802.11 Media Access Control (MAC) protocol. However, very little has been done on investigating the interplay between the...
Provided by Amc
-
White Papers
Wireless Opportunistic Podcasting: Implementation and Design Tradeoffs
Sep 2007
Podcasting has become a very popular and successful Internet service in a short time. This success illustrates the interest for participatory broadcasting, but podcasting is alas only available...
Provided by Association for Computing Machinery
-
White Papers
Fairness Provision in the IEEE 802.11e Infrastructure Basic Service Set
Sep 2007
Most of the deployed IEEE 802.11e Wireless Local Area Networks (WLANs) use infrastructure Basic Service Set (BSS) in which an Access Point (AP) serves as a gateway between wired and wireless...
Provided by University of California
-
White Papers
Mining Behavioral Groups in Large Wireless LANs
Jun 2007
One vision of future wireless networks is that they will be deeply integrated and embedded in the lives and will involve the use of personalized mobile devices. User behavior in such networks is...
Provided by University of Florida
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White Papers
A Dynamic Multimedia User-Weight Classification Scheme for IEEE_802.11 WLANs
Mar 2011
In this paper the authors expose a dynamic traffic-classification scheme to support multimedia applications such as voice and broadband video transmissions over IEEE 802.11 Wireless Local Area...
Provided by Texas A&M University
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White Papers
Tournament MAC With Constant Size Congestion Window for WLAN
Dec 2007
In the context of radio distributed networks, the authors present a generalized approach for the Medium Access Control (MAC) with fixed congestion window. The protocol is quite simple to analyze...
Provided by INRIA
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White Papers
Distributed Fair Scheduling Using Variable Transmission Lengths in Carrier-Sensing-Based Wireless Networks
Dec 2007
The fairness of IEEE 802.11 wireless networks (including Wireless LAN and Ad-hoc networks) is hard to predict and control because of the randomness and complexity of the MAC contentions and...
Provided by University of California
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White Papers
VoIP Over Multiple IEEE 802.11 Wireless LANs
Dec 2007
IEEE 802.11 WLAN has high data rate (e.g., 11Mbps for 802.11b and 54Mbps for 802.11g) while voice stream of VoIP has low data rate requirement (e.g., 29.2Kbps). One may therefore expect WLAN to be...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed MAC Strategy for Exploiting Multi-User Diversity in Multi-Rate IEEE 802.11 Wireless LANs
Dec 2007
Fast rate adaptation has been established as an effective way to improve the PHY-layer raw date rate of wireless networks. However, within the current IEEE 802.11 legacy, MAC-layer throughput is...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Analytical Modeling of Saturation Throughput in Power Save Mode of an IEEE 802.11 Infrastructure WLAN
Dec 2010
The authors consider a single STAtion (STA) in the Power Save Mode (PSM) of an IEEE 802.11 infrastructure WLAN. This STA is assumed to be carrying uplink and downlink traffic via the Access Point...
Provided by Indian Institute of Science
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White Papers
On the Behavior of the Distributed Coordination Function of IEEE 802.11 With Multirate Capability Under General Transmission Conditions
Oct 2007
The aim of this paper is threefold. First, it presents a multi-dimensional Markovian state transition model characterizing the behavior of the IEEE 802.11 protocol at the Medium Access Control...
Provided by California State University
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White Papers
Proportional Fairness in Multi-Channel Multi-Rate Wireless Networks - Part I: The Case of Deterministic Channels With Application to AP Association Problem in Large-Scale WLAN
Feb 2008
This is Part I of a two-part paper series that studies the use of the Proportional Fairness (PF) utility function as the basis for resource allocation and scheduling in multi-channel multi-rate...
Provided by Chinese University of Hong Kong
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White Papers
Fast Dual-Radio Cross-Layer Handoffs in Multi-Hop Infrastructure-Mode 802.11 Wireless Networks for In-Vehicle Multimedia Infotainment
Oct 2008
Delivering multimedia infotainment applications such as VoIP, IPTV, or drive-by info-fueling to moving vehicles require seamless high-bandwidth connectivity between On-Board Units (OBUs) and...
Provided by Amrita Vishwa Vidyapeetham
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White Papers
Analysis of Bandwidth Measurement Methodologies Over WLAN Systems
Feb 2009
WLAN devices have become a fundamental component of nowadays network deployments. However, even though traditional networking applications run mostly unchanged over wireless links, the actual...
Provided by Universitat Politecnica de Catalunya
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White Papers
Modeling Multi-Cell IEEE 802.11 WLANs With Application to Channel Assignment
Mar 2009
The authors provide a simple and accurate analytical model for multi-cell infrastructure IEEE 802.11 WLANs. The model applies if the cell radius, R, is much smaller than the carrier sensing range,...
Provided by Indian Institute of Science
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White Papers
On-Off Random Access Channels: A Compressed Sensing Framework
Mar 2009
In wireless systems, random access refers to any multiple access communication protocol where the users autonomously decide whether or not to transmit depending on their own traffic requirements...
Provided by University of California
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White Papers
A Flexible Design of Network Devices Using Reconfigurable Content Addressable Memory
Jan 2011
The content addressable memory is a memory unit that uses content matching instead of addresses. Content addressable memory is used in different networking, telecommunications and storage...
Provided by University of Mosul
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White Papers
A Robust Ranging Scheme for OFDMA-Based Networks
Mar 2009
Uplink synchronization in Orthogonal Frequency-Division Multiple-Access (OFDMA) systems is a challenging task. In IEEE 802.16-based networks, users that intend to establish a communication link...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Network Load and Packet Loss Optimization During Handoff Using Multi-Scan Approach
Jan 2011
Handoff is a critical function that enables mobile nodes to stay connected to the wireless network by switching the data connection from one WLAN to another. During handoff the communication may...
Provided by Universiti Putra Malaysia
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White Papers
Framework for Intrusion Detection in IEEE 802.11 Wireless Mesh Networks
Oct 2010
Intrusion detection system is one of the possible solutions to timely detect the intrusions and alarm for appropriate action. So far many intrusion detection systems have been proposed for ad-hoc...
Provided by Brunel University
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White Papers
Comparison Process Long Execution Between PQ Algorthm and New Fuzzy Logic Algorithm for VoIP
Jan 2011
The transmission of voice over IP networks can generate network congestion due to weak supervision of the traffic incoming packet, queuing and scheduling. This congestion negatively affects the...
Provided by Universiti Teknologi Malaysia
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White Papers
Effect of Inter Packet Delay in Performance Analysis of Coexistence Heterogeneous Wireless Packet Networks
Jul 2009
As the explosive growth of the ISM band usage continues, there are many scenarios where different systems operate in the same place at the same time. One of growing concerns is the coexistence of...
Provided by BIT
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White Papers
Mobility: Driver of the New Enterprise Transformation
Apr 2011
As mobile technology becomes ubiquitous, IT organizations must have a thorough enterprise wide mobility deployment and infrastructure strategy in place.
Provided by SAP
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White Papers
60 GHz High Data Rate Wireless Communication System
Jan 2009
During the last decade, substantial knowledge about the 60 GHz Milli-Meter-Wave (MMW) channel has been accumulated and different architectures have been analyzed to develop new MMW communication...
Provided by Cornell University
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White Papers
From e-Manufacturing to M-Manufacturing
Apr 2008
This paper studies the impact of wireless technologies on enterprises. A multitude of new paradigms and new software technologies have emerged from the web. E-business and e-manufacturing have...
Provided by Association of Colleges of Computing and Information
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White Papers
A Formal Verification Framework for Security Policy Management in Mobile IP Based WLAN
Oct 2010
The continuous advancement of wireless technologies especially for enterprise Wireless Local Area Networks (LANs), demands well defined security mechanisms with appropriate architectural support...
Provided by Indian Institute of Technology Kharagpur
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White Papers
Measurement Based Link Level Investigation of IEEE 802.11g Channels
Mar 2011
Assessing channel conditions is critical to routing and MAC protocols. But, this task is challenging due to the highly dynamic nature of wireless channels and the characteristic differences...
Provided by University of Southern Mississippi
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White Papers
SOLS: Self Organising Distributed Location Server for Wireless Ad Hoc Networks
Apr 2009
Ad hoc networks allow wireless devices to form a network without any pre-existing knowledge of configuration or topology. Large-scale networks consist of hundreds or more nodes and are unable to...
Provided by University of Kent
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White Papers
Managed Mobility
Apr 2011
As smartphones, tablets, and other mobile devices become the data access and communication tools of choice in the work place, the systems needed to support this new generation of mobility are...
Provided by Sybase Inc.
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White Papers
Comparison of Different Broadcast Schemes for Multi-Hop Wireless Sensor Networks
Jul 2010
The IEEE 802.11 standard is widely used and deployed in wireless systems. IEEE 802.11 MAC protocol allows multiple nodes to share the wireless medium without any central coordinator. If two nodes...
Provided by Inha University
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White Papers
Design and Development of "µMeter" - An Innovative Bluetooth Application
Oct 2009
Bluetooth today, has conquered almost all mobile devices including Personal Digital Assistants (PDAs), handhelds, smart phones and mobile phones. Unlike the internet, where one has to rely on a...
Provided by Victoria University
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White Papers
Optimized Gateway Discovery in Hybrid MANETs
Oct 2009
Mobile users are expected to demand access to the Internet anywhere and anytime. In a MANET context, a device which is about to connect to external hosts needs the route to the element which...
Provided by Malaga University
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White Papers
On the Throughput/Bit-Cost Tradeoff in CSMA Based Cooperative Networks
Nov 2009
Wireless Local Area Networks (WLAN) still suffer from a severe performance discrepancy between different users in the uplink. This is because of the spatially varying channel conditions provided...
Provided by Aachen University
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White Papers
A High TCP Performance Rate Adaptation Algorithm for IEEE 802.11 Networks
Nov 2010
Rate adaptation is a link layer mechanism critical to the system performance by exploiting the multiple transmission rates provided by current IEEE 802.11 WLANs. The key challenge for designing...
Provided by Auburn University
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White Papers
Performance Trade Off With Modulation in 802.15.4 WPAN for Wireless Sensor Networks
Nov 2010
The rapid growth experienced by the wireless sensor communication sector in the recent years is conspicuous. Wireless sensor network kind of technologies have followed suit owing to the adoption...
Provided by Dr.B.R Ambedkar National Institute of Technology
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White Papers
Applications of Geometric Algorithms to Reduce Interference in Wireless Mesh Network
Mar 2010
In wireless mesh networks such as WLAN (IEEE 802.11s) or WMAN (IEEE 802.11), each node should help to relay packets of neighboring nodes toward gateway using multi-hop routing mechanisms. Wireless...
Provided by National Chengchi University
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White Papers
A Performance Analysis of HICCUPS - A Steganographic System for WLAN
Jun 2009
The HICCUPS (HIdden Communication system for CorrUPted networkS), introduced by the author in, is a steganographic system for WLANs (Wireless Local Area Networks). The main innovation of the...
Provided by Warsaw University
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White Papers
A Bandwidth Efficient Scheduling Framework for Non Real Time Applications in Wireless Networks
Sep 2010
The key concern on the bandwidth allocation and scheduling for non real time traffic are the fulfillment of its minimum throughput requirement and improvement of bandwidth utilization with...
Provided by Anna University
