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Institute of Electrical & Electronic Engineers
(11333 results)-
Whitepapers
Dealing With Loud Neighbors: The Benefits and Tradeoffs of Adaptive Femtocell Access
October 29, 2008, 12:00am PDT
Femtocells are low-power, very small-service-area (e.g., home or office environment) cellular base stations that will significantly impact the cellular landscape in the next several years. One of...
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Whitepapers
Attributes Definitions and Measurement Methods for MADM Based Sink Selection Controls in Satellite Sensor Networks
October 29, 2008, 12:00am PDT
The framework of the work is an Environmental Monitoring System (EMS) realized by a Satellite based Sensor Network (SSN). The paper introduces and formalizes specific performance metrics needed to...
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Whitepapers
The Impact of CSI and Power Allocation on Relay Channel Capacity and Cooperation Strategies
November 1, 2008, 12:00am PDT
Capacity gains from transmitter and receiver cooperation are compared in a relay network where the cooperating nodes are close together. Under quasi-static phase fading, when all nodes have equal...
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Whitepapers
Linear Coherent Decentralized Estimation
February 1, 2008, 12:00am PST
The authors consider the distributed estimation of an unknown vector signal in a resource constrained sensor network with a fusion center. Due to power and bandwidth limitations, each sensor...
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Whitepapers
Overload Control for Machine-Type-Communications in LTE-Advanced System
June 1, 2012, 12:00am PDT
As Machine-Type-Communications (MTC) continues to burgeon rapidly, a comprehensive study on overload control approach to manage the data and signaling traffic from massive MTC devices is required....
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Whitepapers
On-Demand Resource-Sharing Mechanism Design in Two-Tier OFDMA Femtocell Networks
March 1, 2011, 12:00am PST
Femtocells are a promising technology to improve network performance with short-range, low-power, and cost beneficial small base stations. There will be many prospective benefits by applying the...
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Whitepapers
Performance Evaluation of Radio Access Network Overloading From Machine Type Communications in LTE-A Networks
June 11, 2012, 12:00am PDT
Featuring massive number of devices, Machine Type Communications (MTC) poses great challenges for Radio Access Network (RAN) with its overloading problem that has been aggressively addressed by...
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Whitepapers
Revenue Extraction in Overlay Macrocell-Femtocell System Under Shared Spectrum Model
January 24, 2011, 12:00am PST
High-throughput data traffic has gained prominence in the mobile telecommunications. But the service quality is never a grantee due to the nature of wireless communication. This not only degrades...
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Whitepapers
Network Formation in Online Social Network Under Information Explosion
January 24, 2011, 12:00am PST
Due to people's eagerness for interactions with others, online social network has been one of the most popular Internet services in the world. However, the most frustrating element is the...
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Whitepapers
Interference Management in LTE Femtocell Systems Using an Adaptive Frequency Reuse Scheme
March 7, 2012, 12:00am PST
Long Term Evolution (LTE) has developed a new technology in order to enhance indoor coverage. This new technology is called femtocells and is achieved with the use of access points installed by...
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Whitepapers
Optimization of Fractional Frequency Reuse in Long Term Evolution Networks
March 12, 2012, 12:00am PDT
In cellular systems, Fractional Frequency Reuse (FFR) partitions each cell into two regions; inner region and outer region and allocates different frequency band to each region. Since the users at...
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Whitepapers
Evaluating RaptorQ FEC Over 3GPP Multicast Services
March 29, 2012, 12:00am PDT
Third Generation Partnership Project (3GPP) introduced Multimedia Broadcast/Multicast Services (MBMS), in order to efficiently deliver the same content to multiple users over mobile cellular...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimizing the Combination of MBSFN and PTM Transmissions in LTE Systems
March 8, 2011, 12:00am PST
The 3rd Generation Partnership Project (3GPP) has introduced the evolved Multimedia Broadcast/Multicast Service (e-MBMS) feature for cellular systems as an evolution to the existing MBMS service....
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Whitepapers
Interference Behavior of Integrated Femto and Macrocell Environments
September 9, 2011, 12:00am PDT
Femtocells are data access points installed by the subscribers to provide better indoor voice and data coverage and to increase system capacity. The integrated femtocell/macrocell networks offer...
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Whitepapers
Communication Cost Analysis of MBSFN in LTE
October 26, 2010, 12:00am PDT
Long Term Evolution (LTE) is the latest step towards the 4th Generation (4G) of radio technologies designed to increase the capacity and speed of mobile communications. To support Multimedia...
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Whitepapers
Spectral Efficiency Performance of MBSFN-Enabled LTE Networks
October 26, 2010, 12:00am PDT
Long Term Evolution (LTE) constitutes the latest step before the 4th Generation (4G) of radio technologies designed to increase the capacity and speed of mobile communications. To support...
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Whitepapers
Efficient MCS Selection for MBSFN Transmissions Over LTE Networks
September 30, 2010, 12:00am PDT
Long Term Evolution (LTE), the next-generation network beyond 3G, is designed to support the explosion in demand for bandwidth-hungry multimedia services that are already experienced in wired...
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Whitepapers
Enhancing FEC Application in LTE Cellular Networks
September 30, 2010, 12:00am PDT
Third Generation Partnership Project's (3GPP) Long Term Evolution (LTE) is focused on enhancing the Universal Terrestrial Radio Access (UTRA). Evolved-Multimedia Broadcast and Multicast Service...
Provided by Institute of Electrical & Electronic Engineers
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Webcasts
Generalized Alias Analysis on a Basis for Programming Tools
July 10, 2008, 12:00am PDT
Tools for automatic program analysis promise to improve programmer productivity by searching and summarizing large bodies of code. However, the phenomenon of aliasing - different names being used...
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Whitepapers
MIMO UWB Systems Based on Linear Precoded OFDM for Home Gigabit Applications
October 29, 2008, 12:00am PDT
In this paper, the authors investigate the use of Multiple-Input Multiple-Output (MIMO) techniques with Linear Precoded Orthogonal Frequency Division Multiplexing (LP-OFDM) waveform for high data...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An Emerging Concatenated Multitone Air Interface for High Speed Access and Home Wireless Networks
October 29, 2008, 12:00am PDT
This paper presents further enhancements to a recently proposed air interface that concatenates an inner Filtered Multi-Tone (FMT) modulator with transmission over multiple antennas, and an outer...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Two-Layer Phase Coding Interference Cancellation Enhancement of Uplink Broadband Wireless Access System
October 29, 2008, 12:00am PDT
Multi-carrier OFDM-CDMA has a range of advantages that are ideal for high data rate wireless access system. A two-layer Carrier Interferometry (CI) phase coding approach is proposed for enhancing...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Architecture for Real-Time Stream Error Handling in Converged DVB-SH/Cellular Network
October 29, 2008, 12:00am PDT
The DVB-SH system relies on a hybrid satellite/terrestrial infrastructure. A complementary solution using the interworking with a bi-directional path offered by cellular network is under...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Adaptive Erasure Coding for Interplanetary Networks With Incomplete Channel Side Information
October 29, 2008, 12:00am PDT
Providing effective telecommunication services over interplanetary networks poses a number of open challenges because of severe impairments exhibited in such environment. In this perspective, this...
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Whitepapers
Multi-Hop Synchronization at the Application Layer of Wireless and Satellite Networks
October 29, 2008, 12:00am PDT
Time synchronization is a key issue in wireless and satellite networks; time-stamping collected data, tasks scheduling or efficient communications are just some applications. From all the existing...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Comparison Framework for MSSs
October 29, 2008, 12:00am PDT
Satellite networks can provide the possibility to access communication services on wide areas of the earth; this characteristic coupled with the support of user mobility allows satellite networks...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Satellite System Design Examples for Maximum MIMO Spectral Efficiency in LOS Channels
October 29, 2008, 12:00am PDT
MIMO satellite links have recently attracted a high interest with respect to possible link capacity enhancements. It has been shown that especially in Line-Of-Sight (LOS) satellite channels...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Time-Varying Channel Emulator for Indoor Power Line Communications
October 29, 2008, 12:00am PDT
In the last two decades, a remarkable research effort has been put in PLC systems. These systems cover three main applications: access, the use of the low voltage power network as a last mile...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Precoded Spatial Multiplexing MIMO for Inhome Power Line Communications
October 29, 2008, 12:00am PDT
Inhome Power Line Communications (PLC) enables new and highly convenient networking functions without any additional wires to mains-powered devices. Multiple Input Multiple Output (MIMO) methods...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Multiuser OFDMA Resource Allocation Algorithms for In-Home Power-Line Communications
October 29, 2008, 12:00am PDT
This paper reformulates the multi-user OFDMA resource allocation problems in broadcast and multiple-access channels by defining an equivalent interference channel. The resulting problems are then...
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Whitepapers
Stopping Rules for Duo-Binary Turbo Codes and Application to HomePlug AV
October 29, 2008, 12:00am PDT
This paper focuses on the design of stopping rule criteria for duo-binary turbo codes. In particular, single-binary stopping rules are generalized and iteration/semi-iteration based criteria are...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimization of Turbo Decoding Performance in the Presence of Impulsive Noise Using Soft Limitation at the Receiver Side
October 29, 2008, 12:00am PDT
The impulsive noise is one of the main reasons for bit or burst errors in power line transmission. The use of a level limiter is a simple and intuitive technique to mitigate the noxious effect of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Emission Characteristics and Interference Constraint of Overhead Medium-Voltage Broadband Power Line (BPL) Systems
October 29, 2008, 12:00am PDT
The authors investigate the measurement, interference and capacity issues of the overhead Medium-Voltage (MV) Broadband over Power Line (BPL) systems operating between 1.7 and 80 MHz. The MV power...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Global Timing Control With Applications to Tape Storage Channels
October 29, 2008, 12:00am PDT
A new approach is introduced for symbol synchronization in multi-channel data storage systems called Global Timing Control (GTC). Applying results from optimum filtering theory to the state-space...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Media Defect Recovery Using Full-Response Reequalization in Magnetic Recording Channels
October 29, 2008, 12:00am PDT
Conventional method for media defect recovery in a Low-Density Parity-Check (LDPC) coded magnetic recording channel is erasure decoding. In erasure decoding, read back signal in media defect...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Distance-Enhancing Constrained Codes for Optical Recording Channels
October 29, 2008, 12:00am PDT
This paper proposes distance-enhancing constrained codes for optical recording channels. The Repeated Minimum Transition Runlength (RMTR) constraints are first investigated, based on error event...
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Whitepapers
Soft-Decision Decoding of Reed-Solomon Codes Using Successive Error-and-Ersure Decoding
October 29, 2008, 12:00am PDT
The authors propose a soft-decision decoding algorithm of Reed-Solomon (RS) codes using successive error-and-erasure decoding. Extensive simulations are conducted to show the possible performance...
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Whitepapers
Reverse Concatenation With Maximum Transition Run (MTR) Codes for High-Density Perpendicular Recording
October 29, 2008, 12:00am PDT
The authors present a Reverse Concatenation (RC) architecture with Maximum Transition Run (MTR) modulation codes and Reed-Solomon (RS) Error-Correction Codes (ECCs). The scheme employs a high-rate...
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Whitepapers
Lowering LDPC Error Floors by Postprocessing
October 29, 2008, 12:00am PDT
A class of combinatorial structures, called absorbing sets, strongly influences the performance of Low-Density Parity Check (LDPC) decoders at low error rates. Past experiments have shown that a...
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Whitepapers
Comparison of Opportunistic Spectrum Multichannel Medium Access Control Protocols
October 29, 2008, 12:00am PDT
This paper comprehensively compares four possible multichannel Medium Access Control (MAC) approaches for Opportunistic Spectrum Access (OSA). One of important conclusions to be drawn from the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Reviews on Cognitive Access to TV White Space
January 22, 2013, 12:00am PST
TV White Space (TVWS) is a large portion of vacant spectrum in UHF/VHF bands that are created during the Digital Switch-Over (DSO) for the higher spectrum efficiency of Digital TV. The newly...
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Whitepapers
Cognitive and Cooperative Communications in Wireless Heterogeneous Networks (HetNet): Current Status and Technical Perspectives
January 22, 2013, 12:00am PST
Cognitive network and cooperative communications are two promising techniques for efficient utilization of scarce radio resources and guaranteeing Quality of Services (QoS) in wireless...
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Whitepapers
Single Feed Stacked Patch Circular Polarized Antenna for Triple Band GPS Receivers
October 1, 2012, 12:00am PDT
A novel design of a circular polarized antenna for multiband GPS receivers is presented. The design employs the concept of multistacked patches fed through a single coaxial probe. Three patches...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Study of Outage Performance for Cognitive Relay Networks (CRN) With the Nth Best-Relay Selection in Rayleigh-Fading Channels
February 1, 2013, 12:00am PST
Relay selection is an effective way to achieve considerable performance gains in Cognitive Relay Networks (CRN). In practice, the best relay may not always be selected, thus the study of the Nth...
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Whitepapers
Outage Performance Study of Cognitive Relay Networks With Imperfect Channel Knowledge
January 1, 2013, 12:00am PST
This paper presents the outage performance analysis for a Cognitive Relay Network (CRN) with imperfect channel knowledge estimations. Under the condition of imperfect Channel State Information...
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Whitepapers
Evaluating the Performance of IEEE 802.11 Network Using RTS/CTS Mechanism
October 25, 2007, 12:00am PDT
In order to effectively analyze the performance of Wireless Local Area Networks (WLANs), it is important to identify what types of network settings can cause bad performance. Low throughput, high...
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Whitepapers
Is Early Warning of an Imminent Worm Epidemic Possible?
October 12, 2009, 12:00am PDT
Network intrusion detection is performed by monitoring network traffic and detecting the evidence of attacks by scanning known signatures (misuse detection) or recognizing anomalous traffic...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
In-Network Live Snapshot Service for Recovering Virtual Infrastructures
August 1, 2011, 12:00am PDT
Infrastructure as a Service (IaaS) has become an increasingly popular type of service for both private and public clouds. The virtual infrastructures that enable IaaS support multi-tenancy by...
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Whitepapers
VNsnap: Taking Snapshots of Virtual Networked Infrastructures in the Cloud
December 1, 2012, 12:00am PST
A Virtual Networked Infrastructure (VNI) consists of Virtual Machines (VMs) connected by a virtual network. Created for individual users on a shared cloud infrastructure, VNIs reflect the concept...
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Whitepapers
Sensor-Assisted Localization in Cellular Systems
December 1, 2007, 12:00am PST
The authors investigate the use of an auxiliary network of sensors to locate mobiles in a cellular system, based on the received signal strength at the sensor receivers from a mobile's...
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Whitepapers
A Diversified and Correct-by-Construction Broadcast Service
September 24, 2012, 12:00am PDT
An application can be made fault-tolerant by replicating it. It is then important that the replicas receive the same inputs in the same order. This is known as the Replicated State Machine...
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Whitepapers
Multiple Target Tracking With RF Sensor Networks
February 11, 2013, 12:00am PST
RF sensor networks are wireless networks that can localize and track people (or targets) without needing them to carry or wear any electronic device. They use the change in the Received Signal...
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Whitepapers
Distributed Scalable Multi-Target Tracking With a Wireless Sensor Network
April 23, 2009, 12:00am PDT
The authors propose a novel technique for tracking multiple co-dependently maneuvering targets using a wireless sensor network. They consider the scenario where the targets carry Radio Frequency...
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Whitepapers
A Multi-Scale Spatial Model for RSS-Based Device-Free Localization
February 24, 2013, 12:00am PST
RSS-based Device-Free Localization (DFL) monitors changes in the Received Signal Strength (RSS) measured by a network of static wireless nodes to locate people without requiring them to carry or...
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Whitepapers
Discovery and Resolution of Anomalies in Web Access Control Policies
December 30, 2012, 12:00am PST
Emerging computing technologies such as Web services, service-oriented architecture, and cloud computing has enabled them to perform business services more efficiently and effectively. However,...
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Whitepapers
Key-Aggregate Cryptosystem for Scalable Data Sharing in Cloud Storage
March 25, 2013, 12:00am PDT
Data sharing is an important functionality in cloud storage. In this paper, the authors show how to securely, efficiently, and flexibly share data with others in cloud storage. They describe new...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Decentralized Control of Transmission Rates in Energy-Critical Wireless Networks
January 31, 2013, 12:00am PST
In this paper, the authors discuss the decentralized optimization of delay and energy consumption in a multi-hop wireless network. The goal is to minimize the energy consumption of energy-critical...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Self-Organization of a Mesh Hierarchy for Smart Grid Monitoring in Outage Scenarios
September 30, 2012, 12:00am PDT
Current hierarchical communication infrastructure in the smart grid is not robust for data collection from smart meters during outages. In this paper, the authors propose a self-organizing...
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Whitepapers
Joint Timing and Channel Estimation for Bandlimited Long-Code-Based MC-DS-CDMA: A Low-Complexity Near-Optimal Algorithm and the CRLB
February 19, 2013, 12:00am PST
Joint Timing and Channel Estimation (JTCE) for bandlimited long-code-aided Multi-Carrier Direct-Sequence Code Division Multiple Access (MC-DS-CDMA) systems is investigated. The authors establish...
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Whitepapers
Round-Robin Relaying With Diversity in Amplify-and-Forward Multi-Source Cooperative Communications
November 28, 2012, 12:00am PST
In this paper, a round-robin based relay protocol dubbed Round-Robin Relaying with Source Selection Protocol (R3SSP) is proposed to achieve full cooperative diversity in multisource cooperative...
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Whitepapers
NEDAT- A Toolset to Design and Analyze Future Force Networks
September 11, 2008, 12:00am PDT
The Department of Defense has developed the overarching concept of Net-Centric Warfare (NCW) to incorporate the technological advancements of the information age into the U.S. military. Mobile Ad...
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Whitepapers
Cost-Optimal Scheduling in Hybrid IaaS Clouds for Deadline Constrained Workloads
August 25, 2010, 12:00am PDT
With the recent emergence of public cloud offerings, surge computing - outsourcing tasks from an internal data center to a cloud provider in times of heavy load - has become more accessible to a...
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Whitepapers
Automated Learning of Playout Scheduling Algorithms for Improving Perceptual Conversational Quality in Multi-Party VOIP
August 20, 2008, 12:00am PDT
In this paper, the authors propose four methods for equalizing the silence periods experienced by users in a multi-party VoIP conversation in order to improve their perceived conversational...
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Whitepapers
Carrier Ethernet for Transport in UMTS Radio Access Network: Ethernet Backhaul Evolution
April 15, 2008, 12:00am PDT
This paper discusses the use of Carrier Ethernet for the transport of UMTS radio access network as a alternative solution for the gradual migration towards pure IP-based RAN. By means of...
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Whitepapers
Multicast Vs Multiple Unicast Scheduling in High-Speed Cellular Networks
April 15, 2008, 12:00am PDT
Packet scheduling is one of the key features in data oriented radio interfaces of cellular networks like HSDPA (High Speed Downlink Packet Access). It has been primarily designed for unicast...
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Whitepapers
Theoretical FER Performance of Multi-Hop Wireless Cooperative Networks Using Transmit Diversity
April 15, 2008, 12:00am PDT
Multi-hop relaying can extend communication range using limited transmit power, and improve area spectral efficiency. However, they might cause considerable degradation of end-to-end error...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Use of Uplink Received Signal Strength Measurements for Handover
April 15, 2008, 12:00am PDT
In most cellular systems, handover decisions are based on measurements of the downlink signal strength. When the average path gain in downlink and uplink is similar, such principles yield good...
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Whitepapers
Least Squares Channel Estimation for IEEE 802.16e Systems Based on Adaptive Taps Selection
April 15, 2008, 12:00am PDT
IEEE 802.16 is an emerging technology for broadband cellular wireless communications. In the context of high capacity systems for mobile terminals, implementation issues like channel estimation...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
New Frequency-Time Scheduling Algorithms for 3GPP/LTE-like OFDMA Air Interface in the Downlin
April 15, 2008, 12:00am PDT
This paper proposes new frequency-time schedulers for 3GPP/LTE-like system in the downlink. 3GPP/LTE DL is OFDMA-based with Adaptive Modulation and Coding (AMC) and frequency-time scheduling to...
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Whitepapers
Analytical Evaluation of Dynamic Proxy Assisted Mobility Support in P2P Networks
April 15, 2008, 12:00am PDT
In recent years peer-to-peer communications has developed into a powerful networking model for real-time applications. Its slow adoption by the wireless community can be attributed to several...
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Whitepapers
Downlink B3G MIMO OFDMA Link and System Level Performance
April 15, 2008, 12:00am PDT
This paper provides a link and system level study of the downlink in a B3G system using MIMO OFDMA techniques. A 3GPP/LTE-like scenario, in terms of frame structure and system main parameters, is...
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Whitepapers
Selective Cooperative Relaying in OFDMA-TDD System for Broadband Mobile Wireless Services
April 15, 2008, 12:00am PDT
Depending on the position of mobile stations in the multihop relay system, various types of cooperative relaying schemes show the different level of throughput and outage performance, due to their...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
In-Band Interference Effects on UTRA LTE Uplink Resource Block Allocation
April 15, 2008, 12:00am PDT
In this paper, the authors investigate the impact of in-band interference on the uplink multiple access of UMTS Terrestrial Radio Access, Long Term Evolution (UTRA LTE). In-band and out-of-band...
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Whitepapers
Analysis of Interference Effects between Co-Existent 802.11b and 802.11g Wi-Fi Systems
April 15, 2008, 12:00am PDT
The main aim of this paper is to provide insights into the performance degradation caused by interference between coexistent 802.11b and 802.11g WiFi systems operating in environments where...
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Whitepapers
Integrated GSM/WiFi Backhauling over Satellite: Flexible Solution for Emergency Communications
April 15, 2008, 12:00am PDT
This paper presents the development of a compact, ruggedized satellite terminal, to be used for communications in emergency situation. The terminal provides GSM coverage in disaster area, where...
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Whitepapers
Dynamic Priority Queue Handover Scheme for Multiservice
April 15, 2008, 12:00am PDT
Mobile service will be more various and handover have to adapt different Quality-of-Service (QoS) requirements of all kinds of service in 4G mobile communication systems. In the paper, a dynamic...
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Whitepapers
Analytical Estimation of Packet Delays in Relay-Based IMT-Advanced Networks
April 15, 2008, 12:00am PDT
The paper shows that relays as inherent technology of IMT-Advanced system can provide low delays as required for future multi-media services. The results shown prove that the proposed relaying...
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Whitepapers
The Architecture of Cross-Campus WLAN Roaming Environment in Taiwan
April 15, 2008, 12:00am PDT
There are totally 163 colleges and universities in Taiwan, 90% of them have established their campus WLAN environment and 61% of them have joined the cross-campus WLAN roaming environment under...
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Whitepapers
Uplink VoIP Performance in E-UTRAN TDD Mode
April 15, 2008, 12:00am PDT
The Long Term Evolution (LTE) of 3GPP radio-access technology aims to develop a framework towards a high-data-rate, low-latency and packet-optimized radio access technology: Evolved Universal...
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Whitepapers
VoIP performance in "MeshBed" - A Wireless Mesh Networks Testbed
April 15, 2008, 12:00am PDT
This paper presents a WLAN based next generation wireless mesh testbed, called "MeshBed". The aim of this testbed is to investigate carrier-grade mesh network aspects from network operator's point...
Provided by Institute of Electrical & Electronic Engineers
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