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Institute of Electrical & Electronic Engineers
(11420 results)-
Whitepapers
User Classifying-Based Hybrid Spectrum Allocation in Two-Tier OFDMA Femtocell Networks
August 2, 2012, 12:00am PDT
This paper addresses the cross-tier interference issue in two-tier OFDMA femtocell networks using hybrid spectrum allocation. Firstly, the authors propose a classification method for users. The...
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Whitepapers
DYGES: A Network-Aware Generation-Based Network Coding for Multicast Flows
August 2, 2012, 12:00am PDT
Most of the works on Generation-Based Network Coding (GBNC) consider a fixed generation size. A large generation size maximizes the Network Coding benefits but leads to a long delay while a small...
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Whitepapers
Performance of Power Saving Modes in IEEE 802.16e System
August 2, 2012, 12:00am PDT
To extend battery life, modern wireless systems implement Power Saving Mechanisms (PSMs). This paper presents a performance evaluation of HTTP Web Browsing and Always-On traffic whith-in joint...
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Whitepapers
A Pilot-Aided Frequency Offset Estimation Algorithm for OFDMA Uplink Systems
August 2, 2012, 12:00am PDT
In this paper, the authors propose a pilot aided Carrier Frequency Offset (CFO) estimation algorithm for Orthogonal Frequency Division Multiplexing Access (OFDMA) uplink systems based on two...
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Whitepapers
Analysis of Vertical Sectorization for HSPA on a System Level: Capacity and Coverage
August 2, 2012, 12:00am PDT
In this paper, capacity and coverage performances by deploying vertical sectorization in HSPA networks are evaluated. A novel resource-scheduling scheme for vertical sectorization is proposed to...
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Whitepapers
An Efficient Metric for Reliable Routing With Link Dependencies
August 2, 2012, 12:00am PDT
To improve the robustness and adaptation to node mobility, ad hoc routing protocol uses as route selection criterion, the route reliability metric between end points. In the first part of this...
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Whitepapers
Fair Buffer Allocation Scheme for Integrated Wireless Sensor and Vehicular Networks Using Markov Decision Processes
August 2, 2012, 12:00am PDT
In sparsely deployed Wireless Sensor Networks (WSNs) the end to end connectivity between sensor nodes and the sink is not always available. To allow communication between sensor nodes and the...
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Whitepapers
Cramer-Rao Lower Bounds for Hybrid Distance Estimation Schemes
August 2, 2012, 12:00am PDT
This paper presents Cramer-Rao Lower Bounds (CRLBs) for hybrid distance estimation algorithms, i.e., for Received Signal Strength (RSS) and Time Of Arrival (TOA) as well as for RSS and Time...
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Whitepapers
High Power Efficiency Transmission Based on Game Theory for AF Cooperative Communication
August 2, 2012, 12:00am PDT
Cooperative communication has been studied as a way to improve reliability of networks compared to conventional direct transmission scheme. The authors consider Amplify-and-Forward (AF)...
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Whitepapers
Energetic Optimization of the Driving Speed Based on Geographic Information System Data
August 2, 2012, 12:00am PDT
This paper is based on the road-trip knowledge in order to reduce the energy consumption of a vehicle. The proposed algorithm computes the globally optimal speed profile and the associated energy...
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Whitepapers
Dual Type Communication Range Recognition Method (D-CRR) for Indoor Position Estimation of Passive RFID Tags
August 2, 2012, 12:00am PDT
Recently, the Radio Frequency IDentification (RFID) system is paid attention as an identification source that can realize a ubiquitous environment. One of the important technologies that apply the...
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Whitepapers
AHP-Based Relay Selection Protocol for Flexible Resource Management
August 2, 2012, 12:00am PDT
In this paper, the authors deal with a relay selection issue to improve throughput performance under signaling overhead and delay constrained system. The proposed relay selection protocol, which...
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Whitepapers
CATWOMAN: Implementation and Performance Evaluation of IEEE 802.11 Based Multi-Hop Networks Using Network Coding
August 2, 2012, 12:00am PDT
This paper investigates the performance of network coding for an IEEE802.11 enabled meshed network. By means of basic setups the impact of the medium access control in combination with network...
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Whitepapers
LTE UE Power Consumption Model: For System Level Energy and Performance Optimization
August 2, 2012, 12:00am PDT
In this paper a novel LTE User Equipment (UE) power consumption model is presented. It was developed for LTE system level optimization, because it is important to understand how network settings...
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Whitepapers
Throughput Adaptation and Traffic Ratio Control in Cooperative Relay Networks With Network Coding and Asymmetric Traffic
August 2, 2012, 12:00am PDT
Adaptive Traffic Ratio Control (ATRC) with hybrid network coding and cooperative relaying is proposed to improve the overall throughput in an asymmetric data traffic network. The scheme is used in...
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Whitepapers
Future Evolution in Wireless Network Architectures: Towards a 'Cloud of Antennas'
August 2, 2012, 12:00am PDT
This paper highlights the significant evolutionary potential in wireless communication networks, taking account of falling costs of RF hardware and increasing availability of powerful centralized...
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Whitepapers
A Dynamic Energy Savings Scheme Based on Enhanced Mobility Load Balancing
August 2, 2012, 12:00am PDT
Now-a-days, energy saving in wireless communications has become a hot topic as energy consumption increasingly becomes a global environment problem. In this paper, the authors formulate an Energy...
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Whitepapers
Feedback in LT Codes for Prioritized and Non-Prioritized Data
August 2, 2012, 12:00am PDT
In this paper feedback in LT codes is investigated. The considered type of feedback is acknowledgments, where information on which symbols have been decoded is given to the transmitter. The...
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Whitepapers
Event-Driven MAC Protocol for Dual-Radio Cooperation
August 2, 2012, 12:00am PDT
One of the sources of the energy waste in wireless sensor networks is idle listening, the time in which a node monitors the free channel. In applications where the events occur sporadically,...
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Whitepapers
Efficient and Fair Resource Allocation Scheme for OFDMA Networks Based on Auction Game
August 2, 2012, 12:00am PDT
A distributed allocation of resources in the uplink of OFDMA networks is studied through auction theory. A combinatorial auction is formulated and the solutions are provided. Moreover, the users'...
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Whitepapers
Energy-Efficient Binary Power Control With Bit Error Rate Constraint in MIMO-OFDM Wireless Communication Systems
August 2, 2012, 12:00am PDT
Motivated by the demand for energy efficiency improvement in mobile communication industry, the authors explore an idea of optimizing energy efficiency for MIMO-OFDM wireless communication systems...
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Whitepapers
SWITCH: A Multichannel MAC Protocol for Cognitive Radio Ad Hoc Networks
August 2, 2012, 12:00am PDT
Cognitive Radio (CR) technology will empower wireless devices with the capabilities to dynamically exploit opportunities in both licensed and unlicensed spectra. Thus, the spectrum shortage...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Interference-Aware Random Beam Selection for Spectrum Sharing Systems
August 2, 2012, 12:00am PDT
Spectrum sharing systems have been introduced to alleviate the problem of spectrum scarcity by allowing secondary unlicensed networks to share the spectrum with primary licensed networks under...
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Whitepapers
Block Diagonal Inversion Precoding for MIMO Broadcast Channels
August 2, 2012, 12:00am PDT
The sum capacity of a broadcast MIMO channel can be achieved sub-optimally using linear pre-coding techniques. Block Diagonalization (BD) is a linear pre-coding technique that achieves near to the...
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Whitepapers
Effect of Outdated CSI on the Performance of Opportunistic Relaying With ARQ
August 2, 2012, 12:00am PDT
Cooperative diversity is one of the effective techniques to improve the reliability of communications over wireless channels by using one or multiple relays to aid the communication from the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
RF-Based Traffic Detection and Identification
August 2, 2012, 12:00am PDT
Road traffic congestion estimation is a critical function that affects both developed and developing countries alike. In this paper, the authors present Monitor as a novel RF-based traffic...
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Whitepapers
Adjacent Vehicle Collision Avoidance Protocol in Mitigating the Probability of Adjacent Vehicle Collision
August 2, 2012, 12:00am PDT
This paper introduces a collision avoidance technique for Vehicular Ad hoc NETworks (VANETs). An alarm is generated as a warning by the adjacent vehicle depending upon the Active Speed of Impact...
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Whitepapers
Throughput Performance of CF-Based Adaptive PAPR Reduction Method for Eigenmode MIMO-OFDM Signals With AMC
August 2, 2012, 12:00am PDT
This paper proposes an enhancement to a previously reported adaptive Peak-to-Average Power Ratio (PAPR) reduction method based on Clipping and Filtering (CF) for eigen-mode Multiple-Input...
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Whitepapers
Optimum and Sub-Optimum Receivers for OFDM Signals With Iterative Clipping and Filtering
August 2, 2012, 12:00am PDT
In this paper, the authors consider the optimum ML (Maximum-Likelihood) detection for OFDM signals (Orthogonal Frequency Division Multiplexing) with iterative clipping and filtering. It is shown...
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Whitepapers
A Transmit Beamforming Algorithm for High-Speed Train Communication
August 2, 2012, 12:00am PDT
Wireless broadband has become reality in recent years. Online multimedia, gaming, mobile application downloading, etc., become dominating traffic of the mobile network. To provide the present...
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Whitepapers
VECADS: VEhicular Context-Aware Downstream Scheduling for Drive-Thru Internet
August 2, 2012, 12:00am PDT
The authors study the downlink scheduling performance of an IEEE 802.11-based roadside Access Point (AP) serving a number of moving vehicles. For determining the scheduling order, Throughput and...
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Whitepapers
Influence of HARQ With Unreliable Feedback on the Throughput of UMTS LTE
August 2, 2012, 12:00am PDT
In this paper, the impact of HARQ signaling errors caused by unreliable feedback on the throughput of communication systems like UMTS LTE is investigated. The authors derive analytical expressions...
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Whitepapers
LTE FDD Physical Random Access Channel Dimensioning and Planning
August 2, 2012, 12:00am PDT
A User Equipment (UE) can only be selected for uplink transmission if it is time-synchronized, so that the Physical Random Access CHannel (PRACH) becomes a key factor between non-synchronized UEs...
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Whitepapers
A Novel Power Ramping Scheme of M2M for WCDMA Random Access Channel
August 2, 2012, 12:00am PDT
Machine-To-Machine (M2M) communication is rising to prominence in wireless communication. Due to various advantages, the cellular networks, which are designed and optimized for Human-To-Human...
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Whitepapers
TIEGeR: An Energy-Efficient Multi-Parameter Geographic Routing Algorithm
August 2, 2012, 12:00am PDT
Geographic routing algorithms conventionally use one-hop greedy forwarding as their primary routing technique, which might lead to routing voids. Secondary routing schemes used to circumnavigate...
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Whitepapers
Estimation of Average Vehicle Speeds Traveling on Heterogeneous Lanes Using Bluetooth Sensors
August 2, 2012, 12:00am PDT
The authors investigate the problem of estimating the average speeds of vehicles traveling in different types of lanes, e.g., express lanes and local lanes, without knowing which lanes individual...
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Whitepapers
Iterative Block Decision Feedback Equalizer for Time-Frequency Interleave Diversity Scheme
August 2, 2012, 12:00am PDT
The Time-Frequency Interleave (TFI) diversity scheme for Single Carrier block transmission with Frequency Domain Equalization (SC-FDE) has been proposed. For single antenna wireless communication...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Goodness-of-Fit-Based Malicious User Detection in Cooperative Spectrum Sensing
August 2, 2012, 12:00am PDT
Cooperative spectrum sensing improves sensing accuracy in primary user detection, but can be threatened by malicious users. Malicious users may try to falsify the sensing result to indicate that...
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Whitepapers
An Adaptive Backoff Algorithm for OFDMA Systems
August 2, 2012, 12:00am PDT
Orthogonal Frequency Division Multiplexing Access (OFDMA) will be adopted in next generation wireless communication systems, as they provide multiple access channels for initial channel access,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Novel Receive Diversity Scheme Using ESPAR Antenna and Arbitrary Frequency Band
August 2, 2012, 12:00am PDT
This paper proposes a novel receive diversity scheme which uses Electronically Steerable Passive Array Radiator (ESPAR) antenna in which reactance connected to parasitic antenna element is...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Integrated Interference Coordination for Relay-Aided Cellular OFDMA System
April 26, 2011, 12:00am PDT
This paper addresses the problem of interference coordination in relay-aided cellular OFDMA systems, aiming at exploiting the benefits of RNs while minimizing the negative effects of interferences...
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Whitepapers
Self-Organizing Fractional Power Control for Interference Coordination in OFDMA Networks
April 26, 2011, 12:00am PDT
This paper shows a Self-Organizing Networks (SON) algorithm for interference coordination in downlink Orthogonal Frequency-Division Multiple Access (OFDMA) networks. A distributed algorithm is...
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Whitepapers
Power Allocation and Scheduling for Broadband Wireless Networks Considering Mutual Interference
April 26, 2011, 12:00am PDT
With the limited wireless spectrum and ever increasing demand for wireless services, increasing wireless network throughput is a pressing issue. To exploit the wireless spatial capacity,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Handover Measurement in Mobile Cellular Networks: Analysis and Applications to LTE
April 26, 2011, 12:00am PDT
This paper deals with handover measurement in mobile cellular networks. The paper is dedicated to network modeling and performance evaluation. The exposition focuses on neighbor cell scanning and...
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Whitepapers
Resolving RACH Congestion for High Speed Moving Group in Wireless Networks
April 26, 2011, 12:00am PDT
When many cellular users take High Capacity Transit (HCT), a group of cellular phones may have to initiate handoffs and location updates more or less at the same time, which will cause congestion...
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Whitepapers
Joint Handoff and Energy Management for a Wireless Mesh Network
April 26, 2011, 12:00am PDT
A lot of Access Points (APs) in Wireless Mesh Networks (WMNs) are battery powered. In order to minimize their energy consumption, the APs can adaptively adjust their transmission power and time...
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Whitepapers
Cost Analysis of Mobility Management Entities of SINEMO
April 26, 2011, 12:00am PDT
Seamless IP-diversity based NEtwork MObility (SINEMO) was proposed to address a number of drawbacks of the NEtwork MObility (NEMO) protocol that manages networks in motion. Increasing number of...
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Whitepapers
Base Station Cooperation in MIMO-Aided Multi-User Multi-Cell Systems Employing Distributed Probabilistic Data Association Based Soft Reception
April 26, 2011, 12:00am PDT
Inter-cell Co-Channel Interference (CCI) mitigation is investigated in the context of cellular systems relying on dense frequency reuse. A distributed Base Station (BS) cooperation aided soft...
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Whitepapers
A Performance Evaluation of Cooperative Schemes for On-Body Area Networks Based on Measured Time-Variant Channels
April 26, 2011, 12:00am PDT
In this paper, the authors present a performance evaluation of cooperative approaches in Body Area Networks (BANs). A full-mesh topology of the on-body network is considered. The performance...
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Whitepapers
Static Clustering for Cooperative Multi-Point (CoMP) in Mobile Communications
April 26, 2011, 12:00am PDT
Cooperative or Coordinated Multi-Point (CoMP) is seen as a key technology within LTE-Advanced, as it enables the exploitation of inter-cell interference in order to significantly increase spectral...
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Whitepapers
ARQ Based Joint Relay Selection and Cooperative Protocol Switch Cooperative Scheme
April 26, 2011, 12:00am PDT
In this paper, the authors investigate the ARQ technology based wireless cooperative network, which can improve the spectral efficiency and decrease the collision probability. With the application...
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Whitepapers
Non-Coherent Detection for Two-Way Cooperative Communications in a Fast Rayleigh Environment
April 26, 2011, 12:00am PDT
Compared with the conventional one-way counterpart, two-way cooperative communications can significantly improve spectrum efficiency. When no channel state information is available at the...
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Whitepapers
Space-Time Block Coded Transmission With Phase Feedback for Two-User MIMO-MAC
April 26, 2011, 12:00am PDT
This paper proposes a Space-Time Block Coded (STBC) transmission with phase feedback for two-user Multi-Input Multi-Output multiple Access Channels (MIMO-MAC). In the proposed system, the phase...
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Whitepapers
Trellis Code Design for Spatial Modulation
April 26, 2011, 12:00am PDT
In this paper, the authors propose a novel Multiple-Input Multiple-Output (MIMO) transmission scheme, called Trellis Coded Spatial Modulation (TC-SM) in which a trellis (convolutional) encoder and...
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Whitepapers
Hybrid Transform Coding for Channel State Information in MIMO-OFDM Systems
April 26, 2011, 12:00am PDT
This paper is concerned with the efficient feedback of the Channel State Information (CSI) in Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems. A...
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Whitepapers
Space Shift Keying (SSK) Modulation: On the Transmit Diversity/Multiplexing Trade-Off
April 26, 2011, 12:00am PDT
Spatial Modulation (SM) is a recently proposed modulation scheme for multiple-antenna wireless systems, which increases the data rate of single-antenna systems (multiplexing gain) without the need...
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Whitepapers
Transmit-Diversity for Spatial Modulation (SM): Towards the Design of High-Rate Spatially-Modulated Space-Time Block Codes
April 26, 2011, 12:00am PDT
Spatial Modulation (SM) is a recently proposed low-complexity modulation scheme for multiple - antenna wireless systems. Recent works have shown that state-of-the-art SM provides a multiplexing...
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Whitepapers
On the Effective Capacity of Two-Hop Communication Systems
April 26, 2011, 12:00am PDT
In this paper, two-hop communication between a source and a destination with the aid of an intermediate relay node is considered. Both the source and intermediate relay node are assumed to operate...
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Whitepapers
Joint Linear MMSE Processing for Two-Way Non-Regenerative MIMO Relay Systems
April 26, 2011, 12:00am PDT
This paper addresses the linear processing issues for two way non-regenerative MIMO relay systems with multiple antennas at each node. Based on theoretical derivation, the authors first propose an...
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Whitepapers
Multiuser Sum MSE Minimization Relaying Strategy
April 26, 2011, 12:00am PDT
In this paper, the authors design relay factors for multiuser Amplify-and-Forward (AF) relay networks where each node in the network is equipped with one antenna. The relay factors are chosen to...
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Whitepapers
Power Allocation for Multi-Relay Amplify-and-Forward Cooperative Networks
April 26, 2011, 12:00am PDT
Nodes in most cooperative networks are powered by batteries and some of which are even non-rechargeable. Therefore, power allocation schemes must be developed to save the transmit power and...
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Whitepapers
Unified Performance Analysis of Two-Hop Fixed Gain Relay Systems With Beamforming
April 26, 2011, 12:00am PDT
The authors present a unified performance analysis of a beamforming system in which the source and the destination are both equipped with multiple antennas while the relay is equipped with a...
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Whitepapers
Piece-Wise Polynomial Approximation Based Channel Estimation for High-Mobility OFDM
April 26, 2011, 12:00am PDT
In this paper, the authors deal with channel estimation and inter-carrier interference mitigation for very high mobility OFDM systems. The scheme proposed here uses piece-wise polynomial expansion...
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Whitepapers
Transmit Diversity Scheme for TDS-OFDM Systems With Reduced Complexity
April 26, 2011, 12:00am PDT
To reduce the complexity of existing transmit diversity solutions for Time Domain Synchronous OFDM (TDSOFDM), a simple transmit diversity scheme is proposed in this paper. The space shifted...
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Whitepapers
The Impact of Timing Synchronization Errors on the Performance of OFDM/FBMC Systems
April 26, 2011, 12:00am PDT
Interference at the radio receiver is a key source of degradation in quality of service of wireless communication systems. In this paper, the authors address the impact of imperfect intercell...
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Whitepapers
Evaluation of Overlay-Based Data Dissemination Over Wireless Sensor Networks
October 2, 2008, 12:00am PDT
In tactical applications of Wireless Sensor Networks (WSNs), such as intruder detection, tracking, and patrol operations, there tend to be multiple, mobile end-users who work amidst the sensors in...
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Whitepapers
Frequency Hoppingmobile Ad Hoc and Sensor Network Synchronization
September 23, 2008, 12:00am PDT
The time synchronization is one of the main issues in Frequency Hopping Mobile Ad hoc NETworks (FH MANET) or Time synchronous Wireless Sensor Networks (TWSN). In the former case a network wide...
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Whitepapers
A Framework for Mitigating Attacks Against Measurement-Based Adaptation Mechanisms in Unstructured Multicast Overlay Networks
February 7, 2008, 12:00am PST
Many multicast overlay networks maintain application-specific performance goals by dynamically adapting the overlay structure when the monitored performance becomes inadequate. This adaptation...
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Whitepapers
Intersystem Soft Handover for Converged DVB-H and UMTS Networks
May 1, 2008, 12:00am PDT
Digital Video Broadcasting for Handhelds (DVB-H) is the standard for broadcasting Internet Protocol (IP) data services to mobile portable devices. To provide interactive services for DVB-H, the...
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ARA: A Routing and Forwarding Scheme for Coordinated Wide Area Mobility
April 14, 2010, 12:00am PDT
The wide availability of Wi-Fi hot-spots provides mobile users with convenient access to the Internet. However, hot-spots cover only small areas and are often operated by a local authority. A user...
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Whitepapers
Cooperative P2P Video Streaming for Mobile Peers
June 16, 2010, 12:00am PDT
Near-live P2P video streaming is already popular among consumers, but typically this type of application is bound to fixed Internet access, as streaming requires a sustained bit-rate over time and...
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Whitepapers
LENS: Leveraging Social Networking and Trust to Prevent Spam Transmission
September 14, 2011, 12:00am PDT
In this paper, the authors introduce LENS, a novel spam protection system based on the recipient's social network, which allows correspondence within the social circle to directly pass to the...
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Phoenix: A Weight-Based Network Coordinate System Using Matrix Factorization
December 1, 2011, 12:00am PST
Network Coordinate (NC) systems provide a lightweight and scalable way for predicting the distances, i.e., round-trip latencies among Internet hosts. Most existing NC systems embed hosts into a...
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NCShield: Securing Decentralized, Matrix Factorization-Based Network Coordinate Systems
July 31, 2012, 12:00am PDT
While Network Coordinate (NC) systems provide scalable Internet distance estimation service and are useful for various Internet applications, decentralized, Matrix Factorization-based NC (MFNC)...
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A Predictive Power Control Scheme for Energy Efficient State Estimation Via Wireless Sensor Networks
January 16, 2009, 12:00am PST
The authors investigate state estimation via wireless sensor networks over fading channels causing random packet loss. Packet loss probabilities depend upon the time-varying channel gains and...
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Dynamic Control and Resource Allocation in Wireless-Infrastructured Distributed Cellular Networks With OFDMA
March 15, 2010, 12:00am PDT
In this paper, the authors consider joint optimization of end-to-end data transmission and resource allocation for Wireless-Infrastructured Distributed Cellular Networks (WIDCNs), where each Base...
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Predictive Power Control and Multiple-Description Coding for Wireless Sensor Networks
October 3, 2009, 12:00am PDT
The authors study state estimation via wireless sensor networks over fading channels affected by random packet loss. In the configuration examined, the sensors send their measurements to a single...
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Reliability Experiments for Wireless Sensor Networks in Train Environment
March 4, 2010, 12:00am PST
In the Swedish railway system there are more than hundred stationary detectors placed all over the country, detecting e.g. overheated wheel bearings. Instead of monitoring the bearings at fixed...
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Energy Minimization in Wireless Multihop Networks Using Two-Way Network Coding
April 5, 2011, 12:00am PDT
The total energy minimization in wireless multihop networks using two-way network coding is investigated in this paper. The problem is first formulated as a linear programming problem, then...
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Lifetime Maximization With Inter-Session Network Coding in Energy Constrained Wireless Networks
April 5, 2011, 12:00am PDT
This paper deals with lifetime maximization for energy constrained wireless networks with inter-session network coding. The problem of lifetime maximization is first formulated, and then...
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