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Institute of Electrical & Electronic Engineers
(11333 results)-
Whitepapers
Network Formation Games for Distributed Uplink Tree Construction in IEEE 802.16J Networks
October 29, 2008, 12:00am PDT
This paper investigates the problem of the formation of an uplink tree structure among the IEEE 802.16j network's Relay Stations (RSs) and their serving Base Station (MR-BS). The authors model the...
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Whitepapers
Minimizing Interference in WiMax/802.16 Based Mesh Networks With Centralized Scheduling
October 29, 2008, 12:00am PDT
WiMax/802.16 mesh network is an emerging infrastructure that offers a cost-effective deployment for highspeed wireless broadband access to the back haul network. However, as in most wireless...
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Whitepapers
Improving the Data Scheduling Efficiency of the IEEE 802.16(d) Mesh Network
October 29, 2008, 12:00am PDT
In an IEEE 802.16(d) (WiMAX) mesh network, network bandwidth can be managed by either the Centralized Scheduling (CS) mode or the Distributed Scheduling (DS) mode. Compared with the CS mode, the...
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Whitepapers
Pricing of Differentiated-QoS Services WiMAX Networks
October 29, 2008, 12:00am PDT
WiMAX/IEEE 802.16 system is a very open Broadband Wireless Access (BWA) technology with different possible services. Pricing of WiMAX is an important topic with different optimization...
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Whitepapers
Prioritized Maximal Scheduling in Wireless Networks
October 29, 2008, 12:00am PDT
This paper considers the scheduling problem in wireless networks. The authors focus on prioritized maximal scheduling, where a maximal scheduler chooses the links in an order specified by certain...
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Whitepapers
Distributed Sender Scheduling for Multimedia Transmission in Wireless Peer-to-Peer Networks
October 29, 2008, 12:00am PDT
Multi-source multimedia transmission is a popular approach in wireless peer-to-peer networks. Most previous related work concentrates on the protocols and network structures, and consequently...
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Whitepapers
Cross-Layer Diversity and Scheduling Optimization for Interference-Limited MIMO Ad Hoc Networks
October 29, 2008, 12:00am PDT
In this paper, the authors study the problem of reliable transmission in interference-limited MIMO networks. This is motivated by a fundamental tradeoff between scheduling full diversity...
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Whitepapers
Adaptive Scheduling Algorithms for Multimedia Traffic in Wireless OFDMA Systems
October 29, 2008, 12:00am PDT
This paper deals with the problem of finding an optimal subcarrier allocation strategy for uplink and downlink communications in an OFDMA metropolitan wireless system. In particular a two steps...
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Whitepapers
An Uplink Resource Allocation Scheme for SDMA-Based IEEE 802.16 MIMO-OFDMA Systems
October 29, 2008, 12:00am PDT
In this paper, a low-complexity SDMA-based Greedy Resource Allocation (SGRA) algorithm is proposed for the uplink of IEEE 802.16 MIMO-OFDMA systems taking into account cochannel interference. The...
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Whitepapers
Interference Management Distributed Reservation Protocol for OFDM-Based UWB Communications
October 29, 2008, 12:00am PDT
Ultra-WideBand (UWB) communications has emerged as a promising technology for high data rate Wireless Personal Area Networks (WPANs). Several proposals for UWB-based WPANs have been made. One...
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Whitepapers
An Efficient Downlink Data Mapping Algorithm for IEEE802.16e OFDMA Systems
October 29, 2008, 12:00am PDT
In the IEEE 802.16e OFDMA systems, the data mapping algorithm maps the data to the appropriate rectangular regions in the two-dimensional matrix of time and frequency domain. Each region is...
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Whitepapers
Cross-Layer Optimization for Fairness in OFDMA Cellular Networks With Fixed Relays
October 29, 2008, 12:00am PDT
Fairness and resource allocation in OFDMA cellular networks enhanced with fixed relays using single path relaying scheme and using cooperative relaying scheme are studied in this paper. A...
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Whitepapers
Efficient Algorithms for Resource Allocation in Heterogeneous OFDMA Networks
October 29, 2008, 12:00am PDT
The authors consider a heterogeneous multiuser OFDMA wireless network serving both QoS-constrained high-priority users and best-effort users. They propose several efficient algorithms for...
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Whitepapers
Reducing Sensing Error in Cognitive PANs Through Modulation of Sensing Probability
October 29, 2008, 12:00am PDT
Cognitive radio technology necessitates accurate and timely sensing of primary users' activity on the chosen set of channels. Reduction of sensing error may be accomplished through random...
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Whitepapers
Wireless Access in Vehicular Environments Using BitTorrent and Bargaining
October 29, 2008, 12:00am PDT
Wireless Access in Vehicular Environment (WAVE) technology such as IEEE 802.11p has emerged as a state-of-the-art solution to vehicular communications. The major challenges in WAVE arise due to...
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Whitepapers
Network Planning for Next-Generation Metropolitan-Area Broadband Access Under EPON-WiMAX Integration
October 29, 2008, 12:00am PDT
This paper tackles a fundamental problem of network planning and dimensioning under EPON-WiMAX integration for next-generation wireless metropolitan-area broadband access. Due to the powerful...
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Whitepapers
Analysis of Delayed Acknowledgment Scheme With Packet Fragmentation of UWB-Based WPAN
October 29, 2008, 12:00am PDT
Delayed ACKnowledgment (Dly-ACK) and packet fragmentation are link-layer policies for Ultra-WideBand (UWB) based Wireless Personal Area Networks (WPANs) to improve the channel utilization, defined...
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Whitepapers
Analysis of Wireless Inertial Sensing for Athlete Coaching Support
October 29, 2008, 12:00am PDT
The use of inertial sensors for distinguishing different types of users' everyday activities was demonstrated in existing work. The SEnsing for Sports And Managed Exercise (SESAME) project...
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Whitepapers
Energy Efficient Communication in Multi-Radio PANs
October 29, 2008, 12:00am PDT
Dynamic switching between multiple radio interfaces has been shown to reduce power consumption and increase battery lifetime in mobile devices. In this paper, the authors first present empirical...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Connection-Based Scheduling for Supporting Real-Time Traffic in Wireless Mesh Networks
October 29, 2008, 12:00am PDT
This paper studies real-time traffic scheduling in Wireless Mesh Networks (WMNs). Optimum packet transmission scheduling providing strict latency guarantee for real-time traffic while efficiently...
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Whitepapers
Interplay of Network Topology and Channel Assignment in Multi-Radio Multi-Rate Multi-Channel Wireless Mesh Networks
October 29, 2008, 12:00am PDT
Employing multiple channels can effectively improve the network capacity in Wireless Mesh Networks (WMNs). In multi-radio multi-channel WMNs, the channel assignment problem is to assign each radio...
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Whitepapers
A Multi-Objective Optimization Model for Planning Robust and Least Interfered Wireless Mesh Networks
October 29, 2008, 12:00am PDT
A wise network planning becomes the most important phase in determining the network efficiency. In this paper, the authors consider the Wireless Mesh Network (WMN) planning problem where no much...
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Whitepapers
LN-MAC: A Cross-Layer Explicit Loss Notification Solution for TCP Over IEEE 802.11
October 29, 2008, 12:00am PDT
WiFi, i.e., IEEE 802.11 is one of the most widely used technologies to implement internet access in today's networks. Typical frame error rates in IEEE 802.11 are much higher than in wired links....
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Whitepapers
QoS Enhancement for Co-Existence of IEEE 802.11e and Legacy IEEE 802.11
October 29, 2008, 12:00am PDT
In this paper, the authors propose a Medium Access Control (MAC) extension, called Medium Access for Contention Assistance (MACAT), to enhance Quality-of-Service (QoS) for IEEE 802.11 and IEEE...
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Whitepapers
A Kalman Filter Approach for Distinguishing Channel and Collision Errors in IEEE 802.11 Networks
October 29, 2008, 12:00am PDT
In the last years, several strategies for maximizing the throughput performance of IEEE 802.11 networks have been proposed in literature. Specifically, it has been shown that optimizations are...
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Whitepapers
How Conservative IEEE 802.11 DCF is When Using Directional Antenna?
October 29, 2008, 12:00am PDT
Directional antennas have been introduced to improve the performance of 802.11 based wireless networks. Station equipped with directional antennas can beamform data in a specific direction....
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Whitepapers
Reservation-Based Distributed Collision Avoidance Channel Access Scheme for WLAN
October 29, 2008, 12:00am PDT
WLAN relies on distributed carrier sensing multiple access mechanism at each node to contend for the access to the channel. Each station has to wait for a certain amount of channel idle time to...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Mobility Management Scheme With QoS Support for Heterogeneous Multihomed Mobile Nodes
October 29, 2008, 12:00am PDT
In this paper, the authors propose a mobility management scheme with Quality-of-Service(QoS) support for heterogeneous multihomed mobile node. With this scheme, the multihomed mobile node can move...
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Whitepapers
Seamless Handover Using FMIPv6 With Effective Tunnel Management Scheme
October 29, 2008, 12:00am PDT
Fast Mobile IPv6 has been proposed to reduce latency and packet loss inherent to the handover process. However the previous research did not consider the packet loss according to the tunnel...
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Whitepapers
Fast Progress-Based Routing in Sensing-Covered Networks
October 29, 2008, 12:00am PDT
A sensing-covered network is a wireless sensor network where every single point in the geographic area is covered by the sensing range of at least one sensor node. For routing on such a 2-D...
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Whitepapers
A Cross-Layer Scheme for Inter-RAT Handover From WiMAX to UMTS
October 29, 2008, 12:00am PDT
In future mobile networks, different radio access technologies, such as GSM, UMTS, WiMAX, WIFI, will coexist. In order to realize a seamless vertical handover (inter-RAT handover) among these...
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Whitepapers
Hierarchical Scanning Algorithm for Integrated Mobile and Nomadic Access Systems
October 29, 2008, 12:00am PDT
In next generation wireless networks, not only wide area cells to provide moderate data rate with full mobility but also local area cells to support high data rate with local mobility will be...
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Whitepapers
Analysis of Signaling Cost for a Roaming User in a Heterogeneous Mobile Data Network
October 29, 2008, 12:00am PDT
In an all-IP environment of internetworked heterogeneous mobile data networks, ongoing data sessions from roaming users are subjected to frequent vertical handoffs. Under such circumstances,...
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Whitepapers
Low Complexity Localization Algorithm Based on NLOS Node Identification Using Minimum Subset for NLOS Environments
October 29, 2008, 12:00am PDT
The location estimation in sensor networks is of great current interest. A general approach to location estimation is to gather Time-Of-Arrival (TOA) measurements from a number of nodes and to...
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Whitepapers
On Mobility of Voice-Like and Data Traffic in IEEE802.16e
October 29, 2008, 12:00am PDT
The authors investigate in this paper the impact of mobility on the capacity of an OFDMA-based mobile WiMAX network in the presence of two types of flows: streaming and elastic, under a dynamic...
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Whitepapers
Design and Evaluation of an Agenda-Based Location Service
October 29, 2008, 12:00am PDT
An interesting approach for the location service problem in wireless mesh networks is the one that relies on location agendas to model node displacements on an absolute time basis. To the best of...
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Whitepapers
GDOP-Assisted Location Estimation Algorithms in Wireless Location Systems
October 29, 2008, 12:00am PDT
In recent years, wireless location estimation has attracted a significant amount of attention in different areas. The network-based location estimation schemes have been widely adopted based on...
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Whitepapers
Throughput Analysis of a Medium Access Control Protocol for a Distributed Cooperative ARQ Scheme in Wireless Networks
October 29, 2008, 12:00am PDT
A throughput analysis of the Persistent Relay Carrier Sensing Multiple Access (PRCSMA) protocol is presented in this paper. The protocol has been designed to execute a Cooperative ARQ (C-ARQ)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
HLBP: A Hybrid Leader Based Protocol for MAC Layer Multicast Error Control in Wireless LANs
October 29, 2008, 12:00am PDT
In IEEE 802.11 Wireless LANs current standard MAC layer protocols do not provide any error correction scheme for broadcast/multicast. In the authors' previous work, they enhanced a Leader Based...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
COMB: Cell Based Orientation Aware MANET Broadcast MAC Layer
October 29, 2008, 12:00am PDT
The design of a collision avoidance system for trains implies the design of a MAC layer for their specific requirements. It should be efficient, reliable, use broadcast and support wireless Mobile...
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Whitepapers
Improving QoS Performance in the Gateway Node
February 1, 2013, 12:00am PST
Various gateway selection schemes have been proposed to select gateway node based on single QOS and multiple non-Qos path parameters. The single QOS parameter includes path availability period,...
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Whitepapers
Secure-International Data Encryption Algorithm
February 1, 2013, 12:00am PST
There are many security algorithms that are used for security purpose. IDEA is one of them. The block cipher IDEA operates with 64-bit plaintext and cipher text blocks and is controlled by a...
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Whitepapers
Low Power Zigbee Technology in Wireless Mesh Networks
February 1, 2013, 12:00am PST
Zigbee technology specification for a suite of high level communication protocols using small, low-power digital radios. The technology is intended to be simpler and cheaper than Bluetooth. ZigBee...
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Whitepapers
Zigbee Based Implementation on Exhaust Gas Detection Services Oriented System Research
February 1, 2013, 12:00am PST
The vehicle exhaust gas emission is directly related with the quality of air. This paper describes the research and development of an ZIGBEE based exhaust gas detection system applying the service...
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Whitepapers
A Simulation Study of Behaviour of Wireless Motes With Reference to Parametric Variation
September 1, 2012, 12:00am PDT
A Wireless Sensor Network (WSN) consists of spatially distributed small nodes to collecting, measuring, and aggregating parameters beyond the authors' current abilities and to cooperatively pass...
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Whitepapers
Performance of Cellular Multicast Using the Mobile Ad-Hoc Networks
September 1, 2012, 12:00am PDT
To overcome the limitations of cellular networks, cellular networks integrated with the ad hoc networks. The basic idea is to allow the cellular receivers experiencing poor channel conditions to...
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Whitepapers
Mobile Cloud Computing: The Future of Cloud
September 1, 2012, 12:00am PDT
Mobile Cloud Computing (MCC) has revolutionized the way in which mobile subscribers across the globe leverage services on the go. The mobile devices have evolved from mere devices that enabled...
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Whitepapers
Dynamic Mobile Cloud Computing: Ad Hoc and Opportunistic Job Sharing
January 5, 2012, 12:00am PST
Despite increasing usage of mobile computing, exploiting its full potential is difficult due to problems such as resource sparseness. In this paper, the authors explore the feasibility of a mobile...
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Whitepapers
SmartVANET: The Case for a Cross-Layer Vehicular Network Architecture
May 2, 2011, 12:00am PDT
Dedicated Short Range Communication (DSRC) based Vehicular Ad Hoc NETwork (VANET) provides an opportunity to enable communication-based cooperative safety systems in order to decrease road traumas...
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Whitepapers
Multi-Agent Based Vehicular Congestion Management
June 9, 2011, 12:00am PDT
In rapidly growing transportation networks, traffic congestion can result from inefficient traffic control infrastructure or ineffective traffic control measures. Existing congestion management...
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Whitepapers
Using On-the-Move Mining for Mobile Crowdsensing
October 26, 2012, 12:00am PDT
In this paper, the authors propose and develop a platform to support data collection for mobile crowdsensing from mobile device sensors that is under-pinned by real-time mobile data stream mining....
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Whitepapers
Mobile Crowd Computing With Work Stealing
November 14, 2012, 12:00am PST
By pooling together the processing power of mobile devices within a crowd to form a 'Mobile cloud', these devices be efficiently utilized to help realize the full potential of mobile computing....
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Whitepapers
Architecture of Mobile Application, Security Issues and Services Involved in Mobile Cloud Computing Environment
August 1, 2012, 12:00am PDT
Cloud computing in mobile platforms has invoked a new wave of evolution in the rapidly developing the mobile world. Although several striking research work has been conducted in the high computing...
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Whitepapers
The AppScale Cloud Platform: Enabling Portable, Scalable Web Application Deployment
March 5, 2013, 12:00am PST
As compute power, disk storage, and high-end network communication costs plummet, cloud computing has emerged to provide intuitive, utility-style access to vast pools of resources (compute,...
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Whitepapers
SIP-Based Handoff in 4G Mobile Networks
January 31, 2009, 12:00am PST
It is commonly held that 4G mobile systems will be founded on the Internet joined with diverse access technologies. Future network architecture is regarded as various overlapping wireless access...
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Whitepapers
Maximum Likelihood Detection With Intermittent Observations
March 12, 2009, 12:00am PDT
The decentralized detection performance, using wireless passive sensor networks, is analyzed according to the minimum probability of error criterion. Passive sensors communicate their measurements...
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Clustered Decentralized Binary Detection: An Information-Theoretic Approach
January 1, 2013, 12:00am PST
This paper presents an information-theoretic approach to decentralized binary detection in sensor networks. In particular, the authors consider a Bayesian approach for the minimization of the...
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Whitepapers
Channel-Aware Decision Fusion With Unknown Local Sensor Detection Probability
March 4, 2010, 12:00am PST
Existing channel-aware decision fusion schemes assume that the local detection probability is known at the Fusion Center (FC). However, this paradigm ignores the possibility of unknown sensor...
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Whitepapers
Frequency-Hopping/M-Ary Frequency-Shift Keying Wireless Sensor Network Monitoring Multiple Source Events
May 1, 2012, 12:00am PDT
In this paper, a novel Wireless Sensor Network (WSN) assisted by M-ary Frequency-Shift Keying (MFSK) modulation and Frequency-Hopping (FH), referred to as the FH/MFSK WSN, is proposed to monitor...
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Space-Time Codes for Amplify-and-Forward (AF) Relay Channels: Performance and Code Design
October 18, 2011, 12:00am PDT
The authors consider the analysis and design of Space-Time Trellis Codes (STTCs) for a cooperative relay channel operating in Amplify-and-Forward (AF) mode assuming the source and destination...
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Whitepapers
Low Cost, Tailored Nanocomposites: Properties and Applications
August 6, 2009, 12:00am PDT
Nanostructured materials have a great potential for applications in portable advanced electronic systems. One class of materials, nanocomposites, containing nanoparticles (metal, semiconductors,...
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Whitepapers
A Horn Antenna Design With Novel Waveguide Polarizer for Mobile Satellite Communications Applications
August 6, 2009, 12:00am PDT
Conventional polarizers usually include complicated corrugations and lossy insertions such as an iris, septa and dielectric slab, causing performance degradation and fabrication difficulties. At...
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Whitepapers
UTRAN LTE Downlink System Performance Under Realistic Control Channel Constraints
August 6, 2009, 12:00am PDT
In the UTRAN Long Term Evolution (LTE), the downlink data channel is shared among the active users through the Orthogonal Frequency Division Multiple Access (OFDMA) technique, and high gains can...
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Whitepapers
Cost-Effective Equalization for STBC MIMO/MISO OFDM Systems Over Multipath Fading Channel
August 6, 2009, 12:00am PDT
A cost-effective Multi-Input Multi-Output (MIMO)/Multi-Input Single-Output (MISO) equalization is proposed for Space-Time Block Code (STBC) MIMO/MISO Orthogonal Frequency Division Multiplexing...
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Whitepapers
Complexity Gain of QR Decomposition Based Sphere Decoder in LTE Receivers
August 6, 2009, 12:00am PDT
It has been widely shown that the Sphere Decoding can be used to find the Maximum Likelihood (ML) solution with an expected complexity that is roughly cubic in the dimensions of the problem....
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Miniaturized Multimode Circular Patch Antennas for MIMO Communications
August 6, 2009, 12:00am PDT
This paper presents one miniaturized Circular Patch Antenna (1-CPA) instead of two CPAs to generate multimode patterns for Multiple-Input Multiple-Output (MIMO) communication systems. A suitable...
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Optimal Number of Secondary Users Through Maximizing Utility in Cooperative Spectrum Sensing
August 6, 2009, 12:00am PDT
Spectrum sensing is a key technology in Cognitive Radio (CR) and cooperative spectrum sensing is derived due to the effects of channel fading. In this paper, the authors focus on the optimal...
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Coded BER Based Algorithm for Decode and Forward in Cooperative OFDM Systems
August 6, 2009, 12:00am PDT
In this paper, the authors propose a Bit Error Rate (BER) based algorithm for Decode and Forward (DF) in cooperative Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed...
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Fast Performance Prediction of Iterative MMSE-IC Receivers in MU-MIMO CDMA Systems
August 6, 2009, 12:00am PDT
This paper presents a semi-analytical method to predict the performance of iterative interference cancellers used in advanced multiuser MIMO CDMA systems. At the receiver side, the orthogonality...
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Outage Probability for Cooperative Multicarrier MIMO With Statistical Channel Knowledge
August 6, 2009, 12:00am PDT
In this paper some preliminary results of power allocation strategy in downlink cooperative MIMO applied to multi-carrier cellular systems are addressed and evaluated. The system model considers...
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SNR Adaptive Limited Constellation Sphere Decoding
August 6, 2009, 12:00am PDT
Sphere Decoding algorithm has been shown to achieve near Maximum Likelihood (ML) performance with low complexity for MIMO communication systems, but still has higher complexity than other...
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Performance Analysis of Multi-Branch Non-Regenerative Relay Systems With EGC in Nakagami-M Channels
August 6, 2009, 12:00am PDT
The end-to-end performance of multi-branch dual-hop wireless communication systems with non-regenerative relays and Equal Gain Combiner (EGC) at the destination over independent Nakagamim fading...
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An Improved Relay Selection Scheme in Half-Duplex Relay Channels
August 6, 2009, 12:00am PDT
In this paper, a novel relay selection scheme is proposed for the wireless network with multiple half-duplex relay nodes, which improves relay throughput by selecting more than one relay nodes in...
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Delay and Jitter Closed-Form Expressions for Cross-Layer Hybrid ARQ Schemes
August 6, 2009, 12:00am PDT
One of the most popular coding mechanisms in wireless systems (e.g. HSPA, Wimax) is the Hybrid-ARQ (HARQ) which is a combination of ARQ based packet retransmission principle and forward error...
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Parametrization of the Local Scattering Function Estimator for Vehicular-to-Vehicular Channels
August 6, 2009, 12:00am PDT
Non Wide-Sense Stationary (WSS) Uncorrelated-Scatterering (US) fading processes are observed in vehicular communications. To estimate such a process under additive white Gaussian noise the authors...
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Multi-Carrier Macrocell Femtocell Deployment - A Reverse Link Capacity Analysis
August 6, 2009, 12:00am PDT
Several cellular operators are in the process of deploying femtocells or home base-stations to improve indoor coverage for both voice and data users. Femtocells are seen as a low CAPEX/OPEX,...
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Parametric Study of Roof Geometry and Roof Rack Crossbar Effects on the Performance of Multi-Band Vehicle Antennas
August 6, 2009, 12:00am PDT
Recent production vehicles have shown a growing trend of incorporating multiple antennas in a single module, which include various antennas such as GPS and Satellite Digital Audio Radio System...
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A Relay Selection Cooperative MIMO Communication Scheme for Network Lifetime Maximization
August 6, 2009, 12:00am PDT
In this paper, the authors propose a relay selection scheme based on cooperative MIMO (Multi-Input-Multi-Output) communication for network lifetime maximization in energy-constrained sensor...
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Power Delay Profile Matching for Vehicle Target Recognition
August 6, 2009, 12:00am PDT
Radar echo contains unwanted echoes called as clutter, which make it difficult to detect vehicle or obstacle. Especially short-range/wide-angle vehicle radar at 24GHz suffers from heavy clutter...
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Traffic Flow Organization by Means of a Vehicle-Sided Rule-Bases
August 6, 2009, 12:00am PDT
This contribution presents a new concept for traffic-flow-optimization by means of C2C-communication and decentralized vehicle-control in a type of multi-agent-approach. The vehicles' velocities...
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