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mobile - wireless communications
(58760 results)-
Whitepapers
Comparative Performance Evaluation of AODV Over CBR and TCP Traffic
Jun 2011
Mobile ad hoc network is a collection of wireless mobile nodes dynamically forming a network topology without the use of any existing network infrastructure. The purpose of this paper is to...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
AELB: Adaptive and Efficient Load Balancing Schemes to Achieve Fair Routing in Mobile Ad Hoc Networks (MANETs)
Sep 2011
Currently, Mobile Ad hoc NETworks (MANETs) can be deployed in various scenarios but the presence of varying degree of resources, mobility of nodes and the lack of load-balancing capabilities in...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Chain Based Energy Proficient Data Gathering Protocol for Wireless Sensor Networks
Sep 2011
Wireless network is composed of sensor nodes. Sensor nodes are deployed in harsh physical environment to gather data and deliver the data to the remote base station. Since sensor nodes have energy...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Direction of Arrival Estimation Using Sparse Ruler Array Design
Apr 2012
In this paper, a new Direction Of Arrival (DOA) estimation approach is addressed for the case of more sources than physical receiving antennas by considering a novel non-uniform array design. The...
Provided by Delft University of Technology
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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
Optimized Cross-Layer Design for Scalable Video Transmission Over the IEEE 802.11e Networks
Dec 2007
A cross-layer design for optimizing 3-D wavelet scalable video transmission over the IEEE 802.11e networks is proposed. A thorough study on the behavior of the IEEE 802.11e protocol is conducted....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Applying Spring-Relaxation Technique in Cellular Network Localization
Jul 2010
This paper presents a simple solution suitable for the mandatory localization function for E-911 services specified by FCC. The authors' solution introduces zero-length spring technique to compute...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Sender-Side TCP Enhancement for Startup Performance in High-Speed Long-Delay Networks
Jul 2010
Many previous studies have shown that traditional TCP slow-start algorithm suffers performance degradation in high-speed and long-delay networks. This paper presents a sender-side enhancement,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Controlling Route Discovery for Efficient Routing in Resource-Constrained Sensor Networks
Dec 2009
Existing ad-hoc network routing strategies base their operations on flooding route requests throughout the network and choosing the shortest path thereafter. However, this typically results in a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Network Lifetime Aware Cooperative MAC Scheme for 802.11b Wireless Networks
Dec 2009
Cooperative communication techniques have earlier been applied to design of the IEEE 802.11 Medium Access Control (MAC) and shown to perform better. High rate stations can help relay packets from...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Collision Codes: Decoding Superimposed BPSK Modulated Wireless Transmissions
Dec 2009
The introduction of physical layer network coding gives rise to the concept of turning a collision of transmissions on a wireless channel useful. In the idea of physical layer network coding, two...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Fluid-Based Modeling of TCP Veno
May 2009
This paper makes use of the fluid-based approach to model the throughput of TCP Veno flow over wired/wireless networks. A generalized formula is derived between Veno's throughput and its window...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Improving Videophone Transmission Over Multi-Rate IEEE 802.11e Networks
Apr 2009
In this paper, the authors propose an adaptive system for improving videophone transmission over EDCA. They consider that a videophone contains a Constant Bit Rate (CBR) voice source and a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An On-Off Queue Control Mechanism for Scalable Video Streaming Over the IEEE 802.11e WLAN
Apr 2009
In this paper, the authors study the issue of scalable video streaming over IEEE 802.11e EDCA WLANs. Their basic idea is to control the number of "Active" nodes on the channel in order to reduce...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Practical Path Loss Model for Indoor WiFi Positioning Enhancement
Feb 2008
Positioning within a local area refers to technology whereby each node is self-aware of its position. Based on empirical study, this paper proposes an enhancement to the path loss model in the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Semi-Markov Modeling for Bandwidth Sharing of TCP Connections With Asymmetric AIMD Congestion Control
Dec 2007
This paper presents a semi-Markov model that evaluates the performance of TCP connections with asymmetric Additive Increase and Multiplicative Decrease (AIMD) congestion control settings involved...
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
Cooperative Localization in Partially Connected Mobile Wireless Sensor Networks Using Geometric Link Reconstruction
May 2012
The authors extend one of their recently proposed anchorless mobile network localization algorithms (called PEST) to operate in a partially connected network. To this aim, they propose a geometric...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Localization and Tracking of a Mobile Target for an Isogradient Sound Speed Profile
Feb 2012
In this paper, the authors analyze the problem of localizing and tracking a mobile node in an underwater environment with an iso-gradient Sound Speed Profile (SSP). They will show that range-based...
Provided by Delft University of Technology
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Whitepapers
Sparse Multi-Target Localization Using Cooperative Access Points
Mar 2012
In this paper, a novel multi-target Sparse Localization (SL) algorithm based on Compressive Sampling (CS) is proposed. Different from the existing literature for target counting and localization...
Provided by Delft University of Technology
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Whitepapers
Compressive Sampling Based Differential Detection for UWB Impulse Radio Signals
Oct 2011
Non-coherent detectors significantly contribute to the practical realization of the UltraWide-Band (UWB) Impulse-Radio (IR) concept, in that they allow avoiding channel estimation and provide...
Provided by Reed Elsevier
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Whitepapers
Dynamic Multidimensional Scaling for Low-Complexity Mobile Network Tracking
May 2012
Cooperative localization of mobile sensor networks is a fundamental problem which becomes challenging for anchor-less networks where there is no pre-existing infrastructure to rely on. Two...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Compressive Wideband Power Spectrum Estimation
May 2012
In several applications, such as wideband spectrum sensing for cognitive radio, only the power spectrum (a.k.a. the power spectral density) is of interest and there is no need to recover the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Minimizing Slowdown in Heterogeneous Size-Aware Dispatching Systems
Mar 2012
The authors consider a system of parallel queues where tasks are assigned (dispatched) to one of the available servers upon arrival. The dispatching decision is based on the full state...
Provided by Aalto University
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Whitepapers
Continuum Percolation Threshold for Permeable Aligned Cylinders and Opportunistic Networking
May 2012
In the continuum percolation problem, objects of given shape are placed according to a k-dimensional Poisson process. Two objects are neighbors if they overlap. The percolation is said to occur if...
Provided by Aalto University
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Whitepapers
Wavelet-Based Real Time Detection of Network Traffic Anomalies
Jan 2012
Real time network monitoring for intrusions is offered by various host and network based intrusion detection systems. These systems largely use signature or pattern matching techniques at the core...
Provided by University of South Carolina
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Whitepapers
Containing Hitlist-Based Worms With Polymorphic Signatures
May 2007
Worms are a significant threat to network systems, both through resource consumption and malicious activity. This paper examines the spread of a class of hitlist-based worms that attempt to...
Provided by Towson University
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Whitepapers
Securing VoIP Services in Multi-Hop Wireless Mesh Networks
Aug 2007
Voice over Internet Protocol (VoIP) service has been a very popular and important application over the Internet. Wireless VoIP also becomes more and more popular due to its features of low cost...
Provided by University of South Carolina
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Whitepapers
Improving Availability With Adaptive Roaming Replicas in Presence of Determined DoS Attacks
Jan 2012
Static replicas have been proven useful in providing fault tolerance and load balancing, but they may not provide enough assurance on the continuous availability of mission-critical data in face...
Provided by University of South Carolina
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Whitepapers
Modeling and Analysis of IEEE 802.16 PKM Protocols Using CasperFDR
Aug 2009
IEEE 802.16 is the standard for broadband wireless access. The security sub-layer is provided within IEEE 802.16 MAC layer for privacy and access control, in which the Privacy and Key Management...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Efficient and Secure Multicast in WirelessMAN: A Cross-Layer Design
Oct 2007
Effectively adding security measures to a multicast service is an intriguing problem, especially when the service is deployed in a wireless setting. Next generation IEEE 802.16 standard...
Provided by Iowa State University
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Whitepapers
Mutual Information Applied to Anomaly Detection
Aug 2007
Anomaly detection systems play a significant role in protection mechanism against attacks launched on a network. The greatest challenge in designing systems detecting anomalous exploits is...
Provided by Khartoum International Community School
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Whitepapers
Rateless Coding for MIMO Fading Channels: Performance Limits and Code Construction
Apr 2010
In this paper the performance limits and design principles of rateless codes over fading channels are studied. The Diversity-Multiplexing Tradeoff (DMT) is used to analyze the system performance...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Diversity-Multiplexing Tradeoff in Multiple-Antenna Relay Systems
Jan 2012
The authors study the Diversity-Multiplexing Tradeoff (DMT) for the full-duplex relay channel when the source and the destination have multiple antennas, and the relay has 1 or more. They find DMT...
Provided by Polytechnic University
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Whitepapers
Minimum Expected Distortion in Gaussian Layered Broadcast Coding With Successive Refinement
Jan 2012
A transmitter without Channel State Information (CSI) wishes to send a delay-limited Gaussian source over a slowly fading channel. The source is coded in superimposed layers, with each layer...
Provided by Stanford University
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Whitepapers
Secure Communication With a Relay Helping the Wire-Tapper
Sep 2007
A four terminal Gaussian network, composed of a single source-destination pair, a relay and a wire-tapper is considered. Unlike the relay channel with a wire-tapper, it is assumed that the relay...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dynamic Resource Allocation for the Broadband Relay Channel
Nov 2007
The authors consider a half-duplex broadband relay channel which is composed of L parallel, independent Rayleigh fading relay channels. Partial channel state information in the form of channel...
Provided by Princeton University
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Whitepapers
Cooperative Transmission of Correlated Gaussian Sources
Nov 2007
Cooperation of wireless users is known to provide substantial improvements in channel reliability and in end-to-end distortion when nodes have access to independent sources. In this paper, the...
Provided by Polytechnic University
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Whitepapers
Resource Allocation for Cooperative Relaying
Feb 2008
The delay-limited capacity of the half-duplex relay channel is analyzed for several cooperative protocols under a long-term average total transmit power constraint. It is assumed that the source...
Provided by Princeton University
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White Papers
Dimensioning Cellular Networks With Fixed Relay Stations
May 2009
This paper analyzes the downlink spectral efficiency of multicellular wireless networks where in each cell in addition to the Base Station (BS) a certain number of Relay Stations (RS) are...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Increasing the Secrecy Capacity by Cooperation in Wireless Networks
Oct 2009
Physical layer security is an emerging security field that explores the possibilities of achieving perfect secrecy data transmission between the intended network nodes, while possible malicious...
Provided by University of Oslo
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White Papers
Improved Wireless Secrecy Rate Using Distributed Auction Theory
Oct 2009
Physical layer security is an emerging security area that explores possibilities of achieving perfect secrecy data transmission between the intended network nodes, while possible malicious nodes...
Provided by University of Houston
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White Papers
Agent Collaborative Target Localization and Classification in Wireless Sensor Networks
Jul 2007
Wireless Sensor Networks (WSNs) are autonomous networks that have been frequently deployed to collaboratively perform target localization and classification tasks. The autonomous and collaborative...
Provided by MDPI Publishing
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White Papers
A Multicast-Based Protocol for IP Mobility Support
Jan 2011
Several architectures have been recently proposed to support IP mobility. Most studies, however, show that current protocols, in general, fall short from satisfying the performance requirements...
Provided by University of Southern California
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White Papers
Enabling Location Privacy in Wireless Personal Area Networks
Aug 2007
Location privacy is one of the major security problems in a Wireless Personal Area Network (WPAN). An eavesdropper can keep track of the place and time mobile devices are communicating. The...
Provided by Katholieke Universiteit Leuven
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White Papers
Anonymous ID-Based Group Key Agreement for Wireless Networks
Jan 2008
Popularity of group-oriented applications motivates research on security and privacy protection for group communications. A number of group key agreement protocols exploiting ID-based cryptosystem...
Provided by Worcester Polytechnic Institute
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White Papers
A Secure Cross-Layer Protocol for Multi-Hop Wireless Body Area Networks
Jul 2008
The development of Wireless Body Area Networks (WBANs) for wireless sensing and monitoring of a person's vital functions, is an enabler in providing better personal health care whilst enhancing...
Provided by Springer Science+Business Media
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White Papers
Identification Via Location-Profiling in GSM Networks
Oct 2008
As devices move within a cellular network, they register their new location with cell base stations to allow for the correct forwarding of data. This paper shows it is possible to identify a...
Provided by Association for Computing Machinery
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White Papers
Anonymous ID-Based Group Key Agreement Scheme Applied in Virtual Private Ad Hoc Networks
Aug 2008
As more and more mobile devices interconnect through large scale IP networks, new network architectures become important. A Virtual Private Ad Hoc Network (VPAN) provides such architecture in...
Provided by Katholieke Universiteit Leuven
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White Papers
A Secure Low-Delay Protocol for Multi-Hop Wireless Body Area Networks
Oct 2008
The development of Wireless Body Area Networks (WBANs) for wireless sensing and monitoring of a person's vital functions, is an enabler in providing better personal health care whilst enhancing...
Provided by Katholieke Universiteit Leuven
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White Papers
University Students Awareness on M-Learning
Oct 2010
Mobile learning (M-learning) is the current technology that is becoming more popular. It uses the current mobile and wireless computing technology to complement the effectiveness of traditional...
Provided by Universiti Teknologi PETRONAS
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White Papers
Use of RFID Technology for Identification, Traceability Monitoring and the Checking of Product Authenticity
Dec 2010
This paper is an overview of the structure of Radio Frequency IDentification (RFID) systems and radio frequency bands used by RFID technology. It also presents a solution based on the application...
Provided by World Academy of Science, Engineering and Technology
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White Papers
A Mobile Multihop Relay Dynamic TDD Scheme for Cellular Networks
Jun 2009
In this paper, the authors present an analytical framework for the evaluation of the uplink performance of multihop cellular networks based on dynamic Time Division Duplex (TDD). New wireless...
Provided by Yonsei University
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White Papers
QoS Routing in Wired Sensor Networks With Partial Updates
Jul 2009
QoS routing is an important component of Traffic Engineering in networks that provide QoS guarantees. QoS routing is dependent on the link state information which is typically flooded across the...
Provided by University of California, Irvine
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White Papers
Improving Packet Latency of Video Sensor Networks
Jul 2009
Video sensor networks operate on stringent requirements of latency. Packets have a deadline within which they have to be delivered. Violation of the deadline causes a packet to be treated as lost...
Provided by University of California, Irvine
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White Papers
Capacity Enhancement in Wireless Networks Using Directional Antennas
Jun 2009
One of the biggest drawbacks of the wireless environment is the limited bandwidth. However, the users sharing this limited bandwidth have been increasing considerably. SDMA technique which entails...
Provided by Kocaeli University
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White Papers
Multicast Scheduling in Cellular Data Networks
Mar 2008
Multicast is an efficient means of transmitting the same content to multiple receivers while minimizing network resource usage. Applications that can benefit from multicast such as multimedia...
Provided by NC State University
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White Papers
2-D Realization of WiMAX Channel Interleaver for Efficient Hardware Implementation
Jun 2009
The direct implementation of interleaver functions in WiMAX is not hardware efficient due to presence of complex functions. Also the conventional method i.e. using memories for storing the...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Low Complexity Multi Mode Interleaver Core for WiMAX With Support for Convolutional Interleaving
Feb 2009
Hardware efficient, multi mode, re-configurable architecture of interleaver/de-interleaver for multiple standards, like DVB, WiMAX and WLAN is presented. The interleavers consume a large part of...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Whirlpool Routing for Mobility
Sep 2010
The authors present the Whirlpool Routing Protocol (WARP), which efficiently routes data to a node moving within a static mesh. The key insight in WARP's design is that data traffic can use an...
Provided by Association for Computing Machinery
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White Papers
Radio Over Fiber as a Cost Effective Technology for Transmission of WiMAX Signals
Sep 2009
In this paper, an overview of the Radio over Fiber (RoF) technology is provided. Obstacles for reducing the capital and operational expenses in the existing systems are discussed in various...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Advanced Travel Information System in Heterogeneous Networks
Nov 2009
In order to achieve better road utilization and traffic efficiency, there is an urgent need for a travel information delivery mechanism to assist the drivers in making better decisions in the...
Provided by University of Washington
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White Papers
Effects of the Second Entrant in GSM Telecommunication Market in MENA Region
Jun 2009
For the first incumbent operator it is very important to understand how to react when the second operator comes to the market. In this paper which is prepared for preliminary study of GSM market...
Provided by World Academy of Science, Engineering and Technology
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White Papers
A Quantitative Analysis of GSM Air Interface Based on Radiating Columns and Prediction Model
Jun 2009
This paper explains the cause of nonlinearity in floor attenuation hither to left unexplained. The performance degradation occurring in air interface for GSM signals is quantitatively analysed...
Provided by Sipnas college of Engineering & Technology
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White Papers
Secure Protocol for Short Message Service
Jun 2009
Short Message Service (SMS) has grown in popularity over the years and it has become a common way of communication, it is a service provided through General System for Mobile Communications (GSM)...
Provided by World Academy of Science, Engineering and Technology
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White Papers
A Fault Tolerant, Peer-to-Peer Replication Network
Jan 2011
A peer-to-peer, commonly abbreviated to P2P, is any distributed network architecture composed of participants that make a portion of their resources (such as processing power, disk storage or...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Wireless Authentication Using Remote Passwords
Apr 2008
Current wireless authentication mechanisms typically rely on inflexible shared secrets or a heavyweight public-key infrastructure with user-specific digital certificates and, as such, lack general...
Provided by Association for Computing Machinery
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White Papers
A Security Standard for AMI Smart Meters
Oct 2008
There is a growing interest in 'Smart Grid' technologies in both industry and academic circles. Few attempts have been made to develop a written specification consummated with standards agreed...
Provided by Cornell University
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White Papers
Mobile Phone Based Health Care Technology
Oct 2008
According to the World Health Organization reports, chronic diseases are by far the leading cause of mortality in the world, which places an ever enormous strain on the world's healthcare...
Provided by Bentham Science Publishers
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White Papers
Voice Over Sensor Networks
Jan 2011
Wireless sensor networks have traditionally focused on low duty-cycle applications where sensor data are reported periodically in the order of seconds or even longer. This is due to typically slow...
Provided by Carnegie Mellon University
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White Papers
Client Server System for e-Services Access Using Mobile Communications Networks
Jun 2009
The client server systems using mobile communications networks for data transmission became very attractive for many economic agents, in the purpose of promoting and offering electronic services...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Informative Security of Communication
Jun 2009
This paper is related to security of information and data. Some computer and network users use ICT to abuse this technology and to get some sensitive information of someone else. This is a big...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Load Balancing in Genetic Zone Routing Protocol for MANETs
Sep 2009
Genetic Zone Routing Protocol (GZRP) is a new hybrid routing protocol for MANETs which is an extension of ZRP by using Genetic Algorithm (GA). GZRP uses GA on IERP and BRP parts of ZRP to provide...
Provided by Osmania University
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White Papers
GPS Navigator for Blind Walking in a Campus
Nov 2010
The authors developed a GPS-based navigation device for the blind, with audio guidance in Thai language. The device is composed of simple and inexpensive hardware components. Its user interface is...
Provided by Mahidol University
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White Papers
Intelligent Multi-Agent Middleware for Ubiquitous Home Networking Environments
Jun 2009
The next stage of the home networking environment is supposed to be ubiquitous, where each piece of material is equipped with an RFID (Radio Frequency IDentification) tag. To fully support the...
Provided by Sejong University
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White Papers
QoS Aware Query Processing Algorithm for Wireless Sensor Networks
Nov 2008
In sensor networks, continuous query is commonly used for collecting periodical data from the objects under monitoring. This sort of queries needs to be carefully designed, in order to minimize...
Provided by Academy Publisher
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White Papers
A Novel Design of Service Oriented and Message Driven Middleware for Ambient Aware Wireless Sensor Network
May 2009
Sensor networks have attracted various application domains for which the conventional networks are unsuitable in terms of viability and cost-effectiveness. The emerging field of networked sensors...
Provided by Academy Publisher
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White Papers
The Tag Authentication Scheme Using Self-Shrinking Generator on RFID System
Jun 2009
Since communications between tag and reader in RFID system are by radio, anyone can access the tag and obtain its any information. And a tag always replies with the same ID so that it is hard to...
Provided by World Academy of Science, Engineering and Technology
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White Papers
Cross Layer Optimization for Fairness Balancing Based on Adaptively Weighted Utility Functions in OFDMA Systems
Jun 2009
Cross layer optimization based on utility functions has been recently studied extensively; meanwhile, numerous types of utility functions have been examined in the corresponding literature....
Provided by Peking University
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Whitepapers
Excessively Long Channel Estimation for CDD OFDM Systems Using Superimposed Pilots
Apr 2011
To fully exploit frequency diversity in Cyclic Delay Diversity Orthogonal Frequency Division Multiplexing (CDDOFDM) system, accurate channel estimation is crucial. Due to the excessive channel...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Building a Distributed Network Using Agent Migration
Sep 2011
The efficient utilization of network resources is an important issue. The problem is hard due to the distributed nature of computer networks, high communication demands and the desire for limited...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Power Management of WSNs by Various Clustering Algorithms
Sep 2011
Wireless Sensor Network (WSN) require a various power management protocols to reduce the energy consumption. But the lifetime of sensor network greatly depend on their battery. Radio irregularity...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
A Framework for Mobile Collaboration-Heading Towards Unified Communications
Sep 2011
This paper constitutes an organized summary of literature about mobile collaboration, the use of information and communication technologies to support coordination between users who are moving...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
A Survey on Network Recovery Using Different Routing Configurations
Sep 2011
Now-a-days network recovery is more important in the internet. The communication mechanism is play a major role in the people communication. The people communication is passed via routers. The...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
An Analysis of Wireless Sensor Networks Based on Particle Swarm Optimization
Sep 2011
Wireless sensor networks have sensor nodes, which are battery-powered devices. In the wireless communication, the operation time of a battery-limited relay node depends on its transmission radii...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
A Comparative Review of IPv6 and Mobile IPv6 : Changes in Mobile IPv6 Over Ipv6
Sep 2011
Mobile IPv6 is an update of IETF (Internet Engineering Task Force). Mobile IP standard which has been designed to authenticate the mobile devices or nodes using IPv6 addresses acts as a backbone...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Mobile Ad-Hoc Networks Extensions to Zone Routing Protocol
Sep 2011
Secure communication, an important aspect of any networking environment, is an especially significant challenge in ad hoc networks. The MANET paradism seeks to enable communication across networks...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Simulation Analysis of AODV Routing Protocol of MANET Using OPNET
Sep 2011
Mobile Ad hoc network is concept of communication that mobiles nodes want to communicate using dynamic topology. The important characteristics of having dynamic topology is node can change...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Efficient Routing of Intermittently Connected Mobile Networks Using Wait & Spray
Sep 2011
Intermittently connected mobile networks are wireless networks where most of the time there does not exist a complete path from the source to the destination. There are many real networks that...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Improved NOVEL Routing Protocol for Load Balancing in Wireless Sensor Network
Sep 2011
Congestion in WSN is an important issue. Congestion occurs at the transport layer of the OSI model & is caused by buffer overflow because each node in WSN limited buffer space, energy and has...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
An Enhanced Cluster-Based Multi-Hop Multipath Routing Protocol for MANETs
Sep 2011
Wireless ad-hoc networks have recently emerged as a premier research topic. To support QoS routing in MANET (Mobile Ad hoc NETworks) the authors propose a Cluster-Based Multi-hop Multipath Routing...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
NetCap: A Packet Sniffer in Java
Sep 2011
A packet sniffer is a wiretap device that plugs into computer networks; unlike telephone circuits, computer networks are shared communication channels. Sharing means that computers can receive...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Implementation of FIR Filter in Frequency Domain and Time Domain for Wireless Communication System
Sep 2011
This Paper gives design the methodology for implementation of FIR filter in the frequency domain and time domain. The filter coefficients for these two implementation are taken by sampling the...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Order - Extended Sparse RLS Algorithm for Doubly - Selective MIMO Channel Estimation
Apr 2011
There has emerged a lot of focuses on sparse signal regressions among the researchers in the fields of signal processing and information theory. Although those works contain theoretical...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
High Resolution OFDM Channel Estimation With Low Speed ADC Using Compressive Sensing
Apr 2011
Orthogonal Frequency Division Multiplexing (OFDM) is a technique that will prevail in the next generation wireless communication. Channel estimation is one of the key challenges in an OFDM system....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Analysis of LMS Based Dual Hop MIMO Systems With Beamforming
Apr 2011
The concept of relay transmission is applied to Land Mobile Satellite (LMS) communication where a terrestrial relay node forwards information from the satellite to the mobile unit. Two hop Amplify...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Efficient MIMO Detection Based on Eigenspace Search With Complexity Analysis
Apr 2011
A low-complexity, effective detection method for Multiple-Input Multiple-Output (MIMO) systems based on post-equalization eigenspace search is proposed in this paper. Motivated by the observation...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Implementation and Evaluation of Scheduling Algorithms in Point-to-Multipoint Mode in Wimax Networks
Sep 2011
The demand for high-speed broadband wireless systems is increasing rapidly and is fuelled by demand for bandwidth intensive applications like audio and video streaming. IEEE 802.16 based Wimax...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
OSTBC Transmission in MIMO AF Relay Systems With Keyhole and Spatial Correlation Effects
Apr 2011
The performance of Multiple-Input Multiple-Output (MIMO) systems heavily relies on the rich scattering propagation environment of wireless links. Specifically, rank deficiency of the channel...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Low Complexity Turbo Detection of Coded Under-Determined MIMO Systems
Apr 2011
Most existing works on Multiple-Input Multiple-Output (MIMO) system with spatially multiplexing focus on the symmetric (M = N) or the over-determined (M >N) systems, where N and M denotes the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Comparison of Different Forward Error Correction Coding Techniques for Wireless Communication Systems
Sep 2011
High bit error rates of the wireless communication system require employing Forward Error Correction (FEC) methods on the data transferred. In this paper, the authors investigate the performance...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Amplify-and-Forward Relay Networks Under Received Power Constraint With Imperfect CSI
Apr 2011
The mobility of relay stations within a cell creates an interesting scenario where multiple sources, transmitting correlated data, can co-operate to satisfy power constraints at the receiving...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Evaluation of Tree - Based Multicast Routing Protocols in MANETs
Sep 2011
Multicasting plays a crucial role in many applications of MANETs. It can significantly improve the performance of the networks. This paper proposes the comparison of MAODV and ADMR protocol. MAODV...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Energy Efficient Resource Allocation in SC-FDMA Uplink With Synchronous HARQ Constraints
Apr 2011
In this paper, the authors propose framework for energy efficient (Margin Adaptive, MA) resource allocation in multiuser SC-FDMA with synchronous HARQ constraints. Resource allocation is...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Energy Aware Evaluation of LTE Hybrid-ARQ and Modulation/Coding Schemes
Apr 2011
Mobile internet devices are among the fastest growing markets in consumer electronics. A big issue with these devices is the low battery capacity that requires the user to recharge the device...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Promoting Open Source Technology in Education: NetBeans : The Perfect Open Source IDE
Sep 2011
The NetBeans IDE is an award-winning integrated development environment available for Windows, Mac, Linux, and Solaris. The NetBeans project consists of an open source IDE and an application...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Energy-Efficient Scheduling and Bandwidth - Energy Efficiency Trade-Off With Low Load
Apr 2011
This paper presents a novel adaptation of the score-based scheduling principle along with a method for trading-off bandwidth for energy efficiency for use in Long Term Evolution (LTE) systems. The...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Secured Initialization of Dynamic Message Authentication in Wireless Devices
Sep 2011
There are several protocols and mechanisms have been proposed to address the problem of initial secure key deployment in wireless networks. Most existing approaches work either with a small number...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Combined User Pairing and Spectrum Allocation for Multiuser SC-FDMA Transmission
Apr 2011
This paper proposes a strategy that combines user pairing and spectrum allocation for a Virtual Multiple-Input Multiple-Output (V-MIMO) Single-Carrier Frequency-Division Multiple Access (SC-FDMA)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On Fast and Accurate Detection of Unauthorized Access Point Using Time Stamp in Wlan
Sep 2011
This is an implementation of the Wireless LAN Intrusion Detection System (WIDS) using clock-skews as a fingerprinting property as suggested by Jana-Kasera. The authors' objective is to detect the...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
A Min-Sum Approach for Resource Allocation in Communication Systems
Apr 2011
This paper considers distributed protocol design for Resource Allocation (RA) problems. The authors propose a fully decentralized RA scheme based on the min-sum Message Passing (MP) approach in...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Comparison of Different Mobile Agent Based Intrusion Detection Techniques
Sep 2011
The wireless ad hoc network is very common today, but the main issue is the security. There are many solutions provided by different researcher but still faces research challenges. The intrusion...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Convex Structure of the Sum Rate on the Boundary of the Feasible Set for Coexisting Radios
Apr 2011
The power allocation that maximizes the sum rate of transceivers operating in the same frequency band is a difficult non-convex problem. In the authors' earlier work, they proved that for...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Minimum-Latency Aggregation Scheduling in Underwater Wireless Sensor Networks
Apr 2011
Underwater Wireless Sensor Networks (UWSNs) can enable a broad range of applications. Compared with ground-based sensor networks, one fundamentally different issue in underwater circumstance is...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Two Innovative Algorithms for Fast Computation of Constrained Shortest Paths
Sep 2011
Computing constrained shortest paths is fundamental to some important network functions such as QoS routing, MPLS path selection, ATM circuit routing, and traffic engineering. The problem is to...
Provided by International Journal on Computer Science and Technology (IJCST)
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Whitepapers
Delay Optimal Scheduling for Cognitive Radio Networks With Cooperative Beamforming
Apr 2011
In this paper, the authors propose an opportunistic scheduling scheme to serve bursty traffics in cognitive radios, where cooperative beamforming is exploited to access busy timeslots or spatial...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Asynchronous Power Control Game With Channel Outage Constraints in Cognitive Radio Networks
Apr 2011
This paper provides a framework of the distributed multi-user power control problems for Cognitive Radio (CR) networks over fading channels. Using a non-cooperative game with coupled constraints...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Single Hop IEEE 802.11 DCF Analysis Revisited: Accurate Modeling of Channel Access Delay and Throughput for Saturated and Unsaturated Traffic Cases
Jul 2011
Analytical models for IEEE 802.11 Distributed Coordination Function (DCF) play important roles in performance estimation, protocol optimization and admission control for wireless networks...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Vehicular Networking: A Survey and Tutorial on Requirements, Architectures, Challenges, Standards and Solutions
Jul 2011
Vehicular networking has significant potential to enable diverse applications associated with traffic safety, traffic efficiency and infotainment. In this paper, the authors introduce the basic...
Provided by Institute of Electrical & Electronic Engineers
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