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Institute of Electrical & Electronic Engineers
(11341 results)-
Whitepapers
Modeling Mobility-Assisted Data Collection in Wireless Sensor Networks
October 29, 2008, 12:00am PDT
Exploiting mobility to enhance the performance of Wireless Sensor Networks (WSNs), in terms of connectivity, coverage, and lifetime elongation, has recently been the focus of several research...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
DPRMM: A Novel Coverage-Invariant Mobility Model for Wireless Sensor Networks
October 29, 2008, 12:00am PDT
Existing mobility models for wireless sensor networks generally do not preserve a uniform scattering of the sensor nodes within the monitored area. This paper proposes a coverage-preserving random...
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Whitepapers
Optimal Rate Routing in Wireless Sensor Networks With Guaranteed Lifetime
October 29, 2008, 12:00am PDT
Channel capacity and node energy represent resources and constraints in designing efficient routing schemes for Wireless Sensor Networks (WSNs). To delivery more data, a higher rate is desirable,...
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Whitepapers
Performance Analysis for Optimal Hybrid Medium Access Control in Wireless Sensor Networks
October 29, 2008, 12:00am PDT
Sink's vicinity is a hotspot area in a wireless sensor network, and has a significant impact on the normal operation and network performance of the entire network. A hybrid MAC protocol makes use...
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Whitepapers
Energy-Aware Dynamic Topology Control Algorithm for Wireless Ad Hoc Networks
October 29, 2008, 12:00am PDT
Topology control via per-node transmission power adjustment has been shown effective in extending network lifetime. However, most of existing algorithms construct static topologies which fail to...
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Whitepapers
Stability of Multiple Receiving Nodes Slotted ALOHA for Wireless Ad Hoc Networks
October 29, 2008, 12:00am PDT
In wireless Ad Hoc and sensor networks, communication may be achieved without a central entity (base station) and nodes communicate with each other in a half-duplex manner. In those kinds of...
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Whitepapers
Network Coding in IEEE 802.11 Wireless LANs With an Enhanced Channel Access Scheme
October 29, 2008, 12:00am PDT
In this paper, the authors present a set of simple extensions to the IEEE 802.11 MAC that allow the efficient realization of wireless network coding. The main characteristic of the proposed...
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Whitepapers
Spatially Limited Contention for Multi-Hop Wireless Networks
October 29, 2008, 12:00am PDT
With rapid developments in the community mesh networks and wireless sensor networks research, the need for more efficient channel access techniques for multi-hop wireless networks has become...
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Whitepapers
A Cross-Layer Solution for Ultra wideband Based Wireless Video Sensor Networks
October 29, 2008, 12:00am PDT
A cross-layer communication protocol called VSN-Module is introduced for Wireless Video Sensor Networks based on UltraWideBand (UWB) radio technology at the physical layer. The core of the...
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Whitepapers
Using Hierarchical Agglomerative Clustering in Wireless Sensor Networks: An Energy-Efficient and Flexible Approach
October 29, 2008, 12:00am PDT
In Wireless Sensor Networks (WSNs), hierarchical network structures have the advantage of providing scalable and resource efficient solutions. Thus, finding an efficient way to generate clusters...
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Whitepapers
Optimal Cluster Number Determination for Clustered Wireless Sensor Networks
October 29, 2008, 12:00am PDT
A method to determine the optimal clusterhead number in a clustered wireless sensor network is proposed to improve the energy efficiency of clustering schemes. The wireless sensor network is...
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Whitepapers
Cross-Layer Optimization for Energy-Timeliness Tradeoff in TDMA Based Sensor Networks
October 29, 2008, 12:00am PDT
Energy efficiency is a critical issue in wireless sensor networks. Energy consumption can be saved by using a lower transmission power, but this also increases the channel error rate and the...
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Whitepapers
Asymptotic Performance of Distributed Detection in Clustered Multi-Hop Wireless Sensor Networks
October 29, 2008, 12:00am PDT
The authors consider a multi-hop clustered wireless sensor network in which sensor nodes use their observations of the environment to make local hard (0/1) decisions about whether an event has...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Efficient Tracking of Moving Targets by Passively Handling Traces in Sensor Networks
October 29, 2008, 12:00am PDT
The authors study the important problem of tracking moving targets in wireless sensor networks. They try to overcome the limitations of standard state of the art tracking methods based on...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Robust Edge Detection in Wireless Sensor Networks
October 29, 2008, 12:00am PDT
The ability to geometrically represent sensed phenomena within a wireless sensor network can provide a more concise view than enumeration of all nodes identifying a phenomenon. A more concise view...
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Whitepapers
Decentralized Target Tracking Based on a Weighted Extended Kalman Filter for Wireless Sensor Networks
October 29, 2008, 12:00am PDT
This paper presents a Weighted Extended Kalman Filter (WEKF) for target tracking in wireless sensor networks, where the location estimation is formulated as a Weighted Least Squares (WLS) problem...
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Whitepapers
Second Order Distributed Consensus Time Synchronization Algorithm for Wireless Sensor Networks
October 29, 2008, 12:00am PDT
This paper proposes a novel discrete time Second-Order Distributed Consensus Time Synchronization (SO-DCTS) algorithm for wireless sensor networks. The consensus properties and convergence rates...
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Whitepapers
Utilizing Path Diversity Via Asynchronous and Asymmetric Wakeups in Sensor Networks
October 29, 2008, 12:00am PDT
The authors present an asynchronous wakeup policy for wireless sensor networks that exploits the available path diversity for maximizing the expected network lifetime. They assume a random traffic...
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Whitepapers
Early Spread-Spectrum and Automatic Equalization-NOMAC and Rake
October 29, 2008, 12:00am PDT
Today, both spread spectrum and automatic equalization of randomly varying linear channel distortions are well-worn tools underlying cellular telephony, high-speed modems and other workhorse...
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Whitepapers
The History of Orthogonal Frequency Division Multiplexing
February 29, 2008, 12:00am PST
This paper depicts the development of Orthogonal Frequency Division Multiplexing from a historical perspective. A summary of major research milestones are noted that contributed to modern-day...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Self-Interference Aided Channel Estimation in Two-Way Relaying Systems
October 29, 2008, 12:00am PDT
In this paper, the authors propose a novel channel estimation scheme for the broadcast phase of the newly invented two-way relaying technique. Instead of using pilot sequences, they exploit the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Differential Rotation Feedback MIMO System for Temporally Correlated Channels
October 29, 2008, 12:00am PDT
In fading channels, Multiple-Input Multiple-Output (MIMO) wireless systems make use of the spatial dimension of the channel to provide considerable capacity gain even when only partial Channel...
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Whitepapers
Mutual Coupling Effects in MIMO MRC Systems With Limited Feedback
October 29, 2008, 12:00am PDT
The authors consider the impact of transmitter correlation, mutual coupling and matching networks on the design and performance of MIMO MRC systems with limited feedback. They present codebook...
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Whitepapers
Quantizer Design for Codebook-Based Beamforming in Temporally-Correlated Channels
October 29, 2008, 12:00am PDT
Codebook-based transmit beamforming with receive combining is a simple and efficient strategy for Multiple-Input Multiple-Output (MIMO) wireless systems. However, as a closed-loop technique,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Performance of Adaptive Limited Feedback Beamforming in Distributed MIMO Systems
October 29, 2008, 12:00am PDT
This paper analyzes the performance of Limited FeedBack (LFB) beamforming in Multiple-Input Multiple-Output (MIMO) Distributed Antenna Systems (DAS). The averaged Effective Signal-to-Noise Ratio...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Stochastic Algorithm for Beamforming Using ESPAR Antennas
October 29, 2008, 12:00am PDT
Beamforming capabilities of Electronically Steerable Passive Array Radiator (ESPAR) antennas have attracted considerable attention in recent literature. In this paper, the authors consider a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Performance Analysis of MIMO MRC in 3D Mobile-to-Mobile Double-Correlated Channels
October 29, 2008, 12:00am PDT
In this paper, the authors consider Multiple-Input Multiple-Output (MIMO) Maximal Ratio Combining (MRC) systems and assess the system performance in terms of average Symbol Error Probability...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Rateless Codes for MIMO Channels
October 29, 2008, 12:00am PDT
Two rateless code constructions are developed for efficient communication over Multi-Input Multi-Output (MIMO) Gaussian channels. The key ingredients in both architectures are layering, dithering,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Full Rate L2-Orthogonal Space-Time CPM for Three Antennas
October 29, 2008, 12:00am PDT
To overcome the reduction of channel capacity caused by fading, Telatar, Foschini and Gans described in the late 90s the potential gain of switching to Multiple Input Multiple Output (MIMO)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
State-Selection in a Space-Time-State Block Coded MIMO Communication System Using Reconfigurable PIXEL Antennas
October 29, 2008, 12:00am PDT
In this paper, the authors propose a novel Multiple-Input Multiple-Output (MIMO) wireless communication system employing reconfigurable PIXEL antennas at the receiver. They design a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
The Golden Code is Fast Decodable
October 29, 2008, 12:00am PDT
Multiple-Input Multiple Output (MIMO) technology offers higher transmission rates and improved performance over single-antenna systems. The spatial diversity and multiplexing gains offered by the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimum Space-Time Block Codes Over Time-Selective Channels
October 29, 2008, 12:00am PDT
The authors analyze the average Bit Error Probability (BEP) of orthogonal Space-Time Block Codes (STBC) over time-selective channels. Exact BEP results are obtained in closed form. Through the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Quantitative Measurement and Design of Source-Location Privacy Schemes for Wireless Sensor Networks
September 8, 2011, 12:00am PDT
Wireless Sensor Networks (WSNs) have been widely used in many areas for critical infrastructure monitoring and information collection. While confidentiality of the message can be ensured through...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Adaptive Tree Search Detection With Variable Path Expansion Based on Gram-Schmidt Orthogonalization in MIMO Systems
July 1, 2012, 12:00am PDT
This paper proposes new adaptive tree search detection with variable path expansion based on Gram-Schmidt (GS) Orthogonalization (GSO) in MIMO systems. The authors adopt the GSO procedure to...
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Whitepapers
The Dedicated Optical Path Protection in WDM Mesh Networks and the Finite Differences of Available Capacity and the Connection Groups
July 1, 2012, 12:00am PDT
In this paper the problem of the traffic and the available network capacity of the WDM mesh networks are defined, analyzed and calculated by applying the difference equations. The requests for...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Delay and Disruption Tolerant Authentication for Space Communications
May 1, 2012, 12:00am PDT
Some space communication scenarios, such as deep space communication networks, represent an example of delay and disruption tolerant networks, which may experience dynamic, long-delay links, and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
MAC Protocol for Smart-Antenna Used Ad Hoc Networks With RTS/CTS Overhead Reduction
June 1, 2012, 12:00am PDT
This paper proposes a MAC protocol for ad hoc networks with smart antennas. In the proposed protocol, pulse/tone exchange mechanism is applied to smart-antenna networks. The mechanism...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Impact of Traffic Arrival Distributions on an 802.11 Ad Hoc Network: Modeling and Performance Study
May 1, 2012, 12:00am PDT
This paper investigates the impact of traffic arrival distributions on a typical 802.11 ad hoc network using simulation and modeling. In the investigation, four diverse traffic models...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Simultaneous-Movement Mobile Multiplayer Game Design Based on Adaptive Background Partitioning Technique
April 1, 2012, 12:00am PDT
Implementations of mobile games have become prevalent industrial technology due to the ubiquitous nature of mobile devices. However, simultaneous-movement multiplayer games - games that a player...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Implementation of Dynamic Voltage Restorer (DVR) and Distribution Static Compensator (D-STATCOM) for Power Quality Improvement
April 1, 2012, 12:00am PDT
Power quality has become an important issue in recent times when many utilities around the world find very difficult to meet energy demands which leads to load shedding and power quality problem....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Achievable Rates for the Three User Cooperative Multiple Access Channel
March 11, 2008, 12:00am PDT
For a three user Gaussian Multiple Access Channel (MAC), the authors propose a new superposition block Markov encoding based cooperation scheme. Their scheme allows the three users to...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Modeling User Churning Behavior in Wireless Networks Using Evolutionary Game Theory
March 11, 2008, 12:00am PDT
Churning of mobile users from one service provider to another is expected to become a common feature when the mobile users have freedom to choose the best wireless service. This churning behavior...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Novel Dynamic Directional Cell Breathing Mechanism With Rate Adaptation for Congestion Control in WCDMA Networks
March 11, 2008, 12:00am PDT
In future cellular networks, random users' mobility as well as time-varying multimedia traffic activity make cellular networks design a challenging task. To efficiently utilize the limited...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Enhancements to Linear Least Squares Localization Through Reference Selection and ML Estimation
March 11, 2008, 12:00am PDT
Linear Least Squares (LLS) estimation is a low complexity but sub-optimum method for estimating the location of a Mobile Terminal (MT) from some distance measurements. It requires selecting one of...
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Whitepapers
Aisle Routing for Mobile Ad Hoc Networks
March 11, 2008, 12:00am PDT
Mobility in ad hoc networks causes routes to break disrupting traffic flows and triggering additional routing overhead. The authors address this problem with a novel hybrid routing protocol, Aisle...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Exploiting Phase Noise Properties in the Design of MIMO-OFDM Receivers
March 11, 2008, 12:00am PDT
Phase Noise (PN) is a serious challenge for multicarrier systems as it can drastically decrease the system performance. In order to tackle this problem, recent contributions propose iterative...
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Whitepapers
Exploiting Historical Spectrum Occupancy Information for Adaptive Spectrum Sensing
March 11, 2008, 12:00am PDT
At present wireless devices are able to select their working frequency only to a limited extend although several measurements have shown that the current spectrum regulations are inefficient....
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Whitepapers
A Framework of Cross-Layer Superposition Coded Multicast for Robust IPTV Services Over WiMAX
March 11, 2008, 12:00am PDT
A Cross-Layer Design (CLD) framework for robust and efficient video multicasting over IEEE 802.16 (or WiMAX) is introduced. In the framework, multiple description coding on scalable video...
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Whitepapers
Replacement of Spectrum Sensing and Avoidance of Hidden Terminal for Cognitive Radio
March 11, 2008, 12:00am PDT
Cognitive radio technique has been recently proposed as a novel approach for improving the utilization of the precious limited radio resources, by letting secondary users access primary users'...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Broadcast Routing and Channel Selection in Multi-Radio Wireless Mesh Networks
March 11, 2008, 12:00am PDT
In multi-radio wireless mesh networks, each node can be equipped with multiple network interface cards tuned to different channels. In this paper, the authors present a routing and channel...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Throughput of Distributed Cyclic Delay Diversity MC-CDMA Relaying Over Nakagami-M Fading Channels
March 11, 2008, 12:00am PDT
Distributed Cyclic Delay Diversity (DCDD) multistage MC-CDMA system communication system is shown to yield superior performance over traditional link network. The benefits provided by increased...
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Whitepapers
Heuristics for Jointly Optimizing FEC and ARQ for Video Streaming Over IEEE 802.11 WLAN
March 11, 2008, 12:00am PDT
In this paper, the problem of selecting an appropriate number of Forward Error Correction (FEC) packets under given channel and network conditions is formulated as an optimization problem and two...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Decoding With Early Termination for Rateless (Luby Transform) Codes
March 11, 2008, 12:00am PDT
Fountain codes have recently gained wide attention in communications due to their capacity-approaching performance and rateless properties that allow them to seamlessly adapt to unknown channel...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Iterative Receiver for MIMO-OFDM Systems With Joint ICI Cancellation and Channel Estimation
March 11, 2008, 12:00am PDT
In MIMO-OFDM systems, the time-varying fading of channel can destroy the orthogonality of subcarriers. This causes serious Inter-Carrier Interference (ICI), thus leading to significant system...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Mobility-Aware Multi-Path Forwarding Scheme for Wireless Mesh Networks
March 11, 2008, 12:00am PDT
Localized mobility management is critical to achieve low handoff delay and signaling cost. However, the existing solutions may not be suitable for emerging Wireless Mesh Networks (WMNs), which are...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Potential of Code Division Multiplexing (CDM) and Spatial Diversity in Future Broadband OFDM Systems
March 11, 2008, 12:00am PDT
Code Division Multiplexing (CDM) is an efficient coding scheme without rate loss. The combination of robust and spectrally efficient Orthogonal Frequency Division Multiplexing (OFDM) with CDM...
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Whitepapers
Advanced Spectrum Management in Multicell OFDMA Networks Enabling Cognitive Radio Usage
March 11, 2008, 12:00am PDT
The regulatory perspective on how the spectrum should be allocated and utilized in future wireless scenarios is evolving towards a cautious introduction of more flexibility in spectrum management...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Virtual Flow Queueing for Improving TCP Performance Over IEEE 802.11 WLANs
March 11, 2008, 12:00am PDT
The authors propose a packet scheduling discipline called Virtual Flow Queueing (VFQ) to improve the end-to-end performance of TCP connections over IEEE 802.11 WLANs. VFQ is based on an...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Combining TLS and TPMs to Achieve Device and User Authentication for Wi-Fi and WiMAX Citywide Networks
March 11, 2008, 12:00am PDT
Deploying large-scale wireless citywide networks with strong authentication mechanisms has received considerable interest in industry and academic circles. In this paper, the authors present...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
ABC2: A New Approach to Seamless Mobility Using Cellular Networks and WLANs
March 11, 2008, 12:00am PDT
Although the widespread deployment of cellular networks guarantees mobility in large ranges, it cannot completely support multimedia data. Similarly, although the explosive growth of WLANs...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Simultaneous Handover Support for Mobile Networks on Vehicles
March 11, 2008, 12:00am PDT
With high mobility rates of vehicles, there may be frequent occurrences of simultaneous handover. The authors' work focuses on and straightens out the problems resulting from simultaneous handover...
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Whitepapers
IETT: A Quality Routing Metric for Multi-Rate Multi-Hop Networks
March 11, 2008, 12:00am PDT
Routing metrics are critical to select a path that yields a high throughput in multi-rate multi-hop wireless networks. This paper illustrates the weaknesses of existing routing metrics and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Downlink VoIP Support for Evolved UTRA
March 11, 2008, 12:00am PDT
This paper presents the design of VoIP optimized packet scheduler and performance simulations for supporting voice services over downlink Evolved UTRA. An efficient packet scheduler taking into...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Traffic Pattern Prediction and Performance Investigation for Cognitive Radio Systems
March 11, 2008, 12:00am PDT
In this paper, the authors propose a technique for predicting the traffic pattern of primary users in cognitive radio systems. Cognitive radios enable sharing the frequency bands that are licensed...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Content-Aware ARQ for H.264 Streaming in UTRAN
March 11, 2008, 12:00am PDT
The UMTS architecture is expected to contribute to the success of video services. Its introduction has allowed packet-based video streaming to mobile devices to become a reality, leading video...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Capacity Estimation for IEEE 802.16 Wireless Multi-Hop Mesh Networks
March 11, 2008, 12:00am PDT
For a given multi-hop route in an IEEE 802.16 mesh network, the authors are interested in finding its end-to-end capacity so that admission control can be performed. The end-to-end capacity is...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An Efficient Resource Management Scheme With Guaranteed QoS of Heterogeneous Services in MIMO-OFDM System
March 11, 2008, 12:00am PDT
In this paper, an efficient resource management scheme applied to heterogeneous services scenario in Multiple-Input and Multiple-Output/Orthogonal Frequency Division Multiplexing (MIMO/OFDM)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Digital Baseband Compensation of I/Q Imbalance in Mobile OFDM
March 11, 2008, 12:00am PDT
Next-generation broadband wireless systems are required to provide higher rates, better reliability, and higher user mobility while targeting lower cost, lower power consumption, and higher levels...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Reduced-Complexity ICI Mitigation for Mobile SFBC-OFDM With Application to DVB-H
March 11, 2008, 12:00am PDT
Effective Inter-Carrier Interference (ICI) mitigation for MIMO-OFDM requires accurate channel estimation which is very challenging due to the large number and fast time-varying nature of the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Distribution of Positioning Errors in Wireless Sensor Networks: A Simulative Comparison of Optimization Algorithms
March 11, 2008, 12:00am PDT
Recent advances in the technology of wireless electronic devices have made possible to build ad - hoc Wireless Sensor Networks (WSNs) using inexpensive nodes consisting of low power processors, a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Analysis of Interference Effects in MB-OFDM UWB Systems
March 11, 2008, 12:00am PDT
The inter-modulation and cross-modulation products of interferences introduced by nonlinearities of the receiver could significantly degrade system performance, and should be properly estimated...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cross-Layer Multiservice Scheduling for Mobile WiMAx Systems
March 11, 2008, 12:00am PDT
The authors consider a cross-layer scheme for the downlink multiuser Orthogonal Frequency Division Multiple Access (OFDMA) for mobile WiMAX (Worldwide Interoperability for Microwave Access) based...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Hybrid ARQ Scheme Based on Shortened Low-Density Parity-Check Codes
March 11, 2008, 12:00am PDT
This paper presents a Hybrid ARQ (HARQ) scheme based on shortened low-density parity-check (LDPC) codes. Although conventional incremental Redundancy HARQ (IRHARQ) schemes based on punctured LDPC...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Simple Proportional Fairness Scheduling for OFDMA Frame-Based Wireless Systems
March 11, 2008, 12:00am PDT
The authors propose a packet scheduling scheme called OFDMA Frame-based Proportional Fairness (OFPF) for a frame-based OFDMA wireless system. OFPF aims to maximize system throughput as well as...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
The Effect of Inter-Link Dependencies on the Connectivity of Wireless Mesh Networks
March 11, 2008, 12:00am PDT
This paper presents a novel methodology for finding the network connectivity in wireless mesh networks. This methodology takes into account link dependencies in neighboring nodes. The methodology...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Vertical Handover Decision in an Enhanced Media Independent Handover Framework
March 11, 2008, 12:00am PDT
Vertical handover decision making is one of key problems in heterogeneous network environment. In IEEE 802.21 standard, a Media Independent Handover (MIH) framework is presented to facilitate...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Uplink Control Channel in E-UTRA, Radio Link and Radio Network Evaluation
March 11, 2008, 12:00am PDT
Evolved UTRA (E-UTRA) is specified by the Third Generation Partnership Project, 3GPP. E-UTRA is designed to efficiently and flexibly utilize different spectrum bands supporting high physical bit...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Low Antenna Ultra Wideband Propagation Measurements and Modeling in a Forest Environment
March 11, 2008, 12:00am PDT
Over the past decade, research and development in wireless sensor networks has investigated novel and exciting applications for a number of different scenarios. Impulse Ultra WideBand (UWB)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Multi-Path Propagation Measurements for Vehicular Networks at 5.9 GHz
March 11, 2008, 12:00am PDT
Broadband sounding of the vehicle-to-vehicle channel is reported in suburban, rural, and highway environments. A direct sequence spread spectrum waveform based on zero correlation zone sequences...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Vehicle Collision Warning System Employing Vehicle-to-Infrastructure Communications
March 11, 2008, 12:00am PDT
Road safety has become an important issue and gained much attention for many years. To avoid vehicle collisions on the roads, researchers have proposed various Collision Warning Systems (CWS)...
Provided by Institute of Electrical & Electronic Engineers
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