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Institute of Electrical & Electronic Engineers
(11333 results)-
Whitepapers
Architecting a National Optical Fiber Open-Access Network: The Australian Challenge
August 1, 2012, 12:00am PDT
In this paper, the authors discuss the challenges faced when building a national optical access network that is ubiquitous (i.e., reaches all households nationwide) and open access (i.e., allows...
Provided by Institute of Electrical & Electronic Engineers
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Confidential and Secure Broadcast in Wireless Sensor Networks
July 7, 2007, 12:00am PDT
Wireless sensor networks need broadcast for operations such as software updates, network queries, and command dissemination. Alongside ensuring authenticity of the source and data, keeping the...
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Whitepapers
Survey on Signaling Techniques for Cognitive Networks
May 18, 2011, 12:00am PDT
Network evolution towards self-aware autonomous adaptive networking aims at reducing the burden of configuring and managing networks, which leads to performance degradation. In order to optimize...
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TCP Kikolo for Performance Improvement in Highspeed Networks in Presence of Packet Losses
November 5, 2010, 12:00am PDT
TCP shows poor performance in high speed networks with large latencies as well as in wireless networks where link error rates are high. The main two factors degrading TCP performance are related...
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Whitepapers
Context-Aware Receiver-Driven Retransmission Control in Wireless Local Area Networks
August 6, 2009, 12:00am PDT
Automatic Repeat reQuest (ARQ) techniques employed by leading wireless technologies aim at compensating the high error rates due to radio impairments, but do not offer any differentiated levels of...
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Whitepapers
Distributed Protocol Stacks: A Framework for Balancing Interoperability and Optimization
May 27, 2008, 12:00am PDT
This paper discusses architectural details related to a possible evolution in the protocol stack design, enabling to move a set of functions implemented at a particular layer of the protocol stack...
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Cross-Layer Error Control Optimization in 3G LTE
December 19, 2007, 12:00am PST
3G Long-Term Evolution (LTE) is a recent effort taken by cellular industries to step into wireless broadband market. The key enhancements target an introduction of new all-IP architecture,...
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Beyond Shannon: The Quest for Fundamental Performance Limits of Wireless Ad Hoc Networks
May 1, 2011, 12:00am PDT
The authors describe a new theoretical framework for determining fundamental performance limits of wireless ad hoc networks. The framework expands the traditional definition of Shannon capacity to...
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Whitepapers
Capacity Theorems for Discrete, Finite-State Broadcast Channels With Feedback and Unidirectional Receiver Cooperation
December 1, 2010, 12:00am PST
In this paper, the authors consider the discrete, time-varying Broadcast Channel (BC) with memory under the assumption that the channel states belong to a set of finite cardinality. They study the...
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Whitepapers
Adaptive Modulation for MIMO Systems With Channel Prediction Errors
August 1, 2010, 12:00am PDT
The performance of Multiple-Input Multiple-Output (MIMO) systems using spatial multiplexing is analyzed under channel prediction errors. The authors derive exact closed-form expressions for the...
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Whitepapers
Generalizing Capacity: New Definitions and Capacity Theorems for Composite Channels
July 1, 2010, 12:00am PDT
The authors consider three capacity definitions for composite channels with channel side information at the receiver. A composite channel consists of a collection of different channels with a...
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Whitepapers
The Capacity Region of the Degraded Finite-State Broadcast Channel
December 28, 2009, 12:00am PST
The authors introduce and study the discrete, Finite-State Broadcast Channel (FSBC) with memory. For this class of channels they define physical degradedness and stochastic degradedness, and...
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Capacity Regions and Bounds for a Class of Z-Interference Channels
November 1, 2009, 12:00am PDT
The authors define a class of Z-interference channels for which they obtain a new upper bound on the capacity region. The bound exploits a technique first introduced by Korner and Marton. A...
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Whitepapers
Source and Channel Coding for Correlated Sources Over Multiuser Channels
July 1, 2010, 12:00am PDT
Source and channel coding over multiuser channels in which receivers have access to correlated source side information are considered. For several multiuser channel models necessary and sufficient...
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Whitepapers
Compound Multiple-Access Channels With Partial Cooperation
June 1, 2009, 12:00am PDT
A two-user discrete memoryless compound Multiple-Access Channel (MAC) with a common message and conferencing decoders is considered. The capacity region is characterized in the special cases of...
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Whitepapers
Capacity Gain From Two-Transmitter and Two-Receiver Cooperation
February 1, 2008, 12:00am PST
Capacity improvement from transmitter and receiver cooperation is investigated in a two-transmitter, two-receiver network with phase fading and full channel state information available at all...
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Whitepapers
Estimation Diversity and Energy Efficiency in Distributed Sensing
September 1, 2007, 12:00am PDT
Distributed estimation based on measurements from multiple wireless sensors is investigated. It is assumed that a group of sensors observe the same quantity in independent additive observation...
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Whitepapers
Cross-Layer Design Proposals for Wireless Mobile Networks: A Survey and Taxonomy
April 8, 2008, 12:00am PDT
Third-Generation (3G) and beyond 3G mobile communication systems must provide interoperability with the Internet, increase throughput for mobile devices, and optimize their operation for...
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Whitepapers
A Cross-Layer Adaptive Algorithm for Multimedia QoS Fairness in WLAN Environments Using Neural Networks
January 22, 2009, 12:00am PST
The authors address the problem of providing fair multimedia Quality-of-Service (QoS) in IEEE 802.11 distributed co-ordination function-based wireless local area networks in the infrastructure...
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Whitepapers
Packet Scheduling Over DVB-S2 Through GSE Encapsulation
October 29, 2008, 12:00am PDT
Satellite digital video broadcasting is deeply changing : the next generation is dedicated to packet based communications and introduces fade mitigation techniques leading to variable throughput....
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Whitepapers
A Power Based Algorithm for Efficient Radio Resource Management Policy in Integrated Terrestrial/HAP MBMS Systems
October 29, 2008, 12:00am PDT
Focus of the present paper is the integration between High Altitude Platforms (HAPs) and terrestrial UMTS system to support Multimedia Broadcast/Multicast Services. HAPs are characterised by a...
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Whitepapers
Resource Management in Hybrid DVB-RCS and WiFi Networks
October 29, 2008, 12:00am PDT
Satellite networks are an attractive solution to provide broadband communication services anytime, anywhere with quality of service support. The aim of this paper is to study the integration of...
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Whitepapers
Minimum Hop Count and Load Balancing Metrics Based on Ant Behavior Over a Haps Mesh
October 29, 2008, 12:00am PDT
In this paper, the authors propose a routing algorithm based on swarm intelligence studies. In particular, this algorithm is based on AntNet routing with the extensions of novel metrics for the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimizing TCP Performance Through Joint Channel Coding and Power Management in Power Constrained Satellite Networks
October 29, 2008, 12:00am PDT
In this paper an analytical framework is introduced for the optimization of TCP performance through joint channel coding and transmission power management in satellite communications, where both...
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Whitepapers
Quickest Detection in Cognitive Radio: A Sequential Change Detection Framework
October 29, 2008, 12:00am PDT
In this paper, the agility of detection algorithms in cognitive radio is studied. A sequential change detection framework is developed to investigate the delay of detection algorithms. Three...
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Whitepapers
Blind Multi-Sources Detection and Localization for Cognitive Radio
October 29, 2008, 12:00am PDT
In this paper, the authors introduce a spectrum holes detection approach, which combines blind modulation classification, angle of arrival estimation and number of sources detection. They perform...
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Whitepapers
Robust Energy Detection Based on Bayesian Estimation for Cognitive Radio
October 29, 2008, 12:00am PDT
The energy detection is recently studied extensively as a promising candidate for primary signals detection in cognitive radio. However, one fundamental disadvantage of energy detection is that...
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Whitepapers
Analysis of Equal Gain Combining in Energy Detection for Cognitive Radio Over Nakagami Channels
October 29, 2008, 12:00am PDT
Detection of spectrum holes in cognitive radio environment is a problem of significant interest. To best utilize the spectrum holes by secondary users, the detection of such spectrum holes quickly...
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Whitepapers
Modeling and Comparison of Primary User Detection Techniques in Cognitive Radio Networks
October 29, 2008, 12:00am PDT
In this paper, the authors investigate the problem of spectrum sensing in cognitive radio networks. Compared with related work that aims to propose techniques at different layers of the network...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Spectrum Sensing Over SIMO Multi-Path Fading Channels Based on Energy Detection
October 29, 2008, 12:00am PDT
One of the techniques for spectrum sensing is the energy detection of signals from primary transmitters. However, when detecting in a certain frequency band, this technique suffers from the random...
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Whitepapers
Detection Timing and Channel Selection for Periodic Spectrum Sensing in Cognitive Radio
October 29, 2008, 12:00am PDT
In this paper, detection timing and channel selection for periodic spectrum sensing are investigated to improve the performance of Cognitive Radio (CR) users. Designed to maximize the channel...
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Whitepapers
Correlation Between Local Sensors in Hard Cooperative Spectrum Sensing: Beneficial or Detrimental?
October 29, 2008, 12:00am PDT
In Hard Cooperative Spectrum Sensing (HCSS) for Cognitive Radio (CR), where local secondary users (sensors) sense whether primary users exist or not and then send decisions to the center where the...
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Whitepapers
Cooperative Spectrum Allocation in Centralized Cognitive Networks Using Bipartite Matching
October 29, 2008, 12:00am PDT
Conflict free spectrum allocation for secondary users in cognitive networks is a challenging problem, since the accessible spectrum is shared among users. The problem becomes to be especially...
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Whitepapers
A Comparison of Energy Detectability Models for Spectrum Sensing
October 29, 2008, 12:00am PDT
Energy detection has been adopted as an alternative spectrum sensing method for cognitive radios due to its low computational complexity and not requiring a priori information of the signal to be...
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Whitepapers
Asynchronous Distributed Power Control Under Interference Temperature Constraints
October 29, 2008, 12:00am PDT
Cognitive radio makes it possible for an unlicensed user to access a spectrum opportunistically. This paper addresses the problem of power control in cognitive radio networks, to maximize the...
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Whitepapers
Dynamical Game Approach Rate Adaptation in Cognitive Radio Systems
October 29, 2008, 12:00am PDT
This paper addresses the secondary user rate adaptation problem in cognitive radio networks. By modeling primary user activities and secondary user block fading channels as finite state Markov...
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Whitepapers
Spectral Leakage Suppression of DFT-Based OFDM Via Adjacent Subcarriers Correlative Coding
October 29, 2008, 12:00am PDT
In spectrum pooling applications, the spectral leakage of DFT-based OFDM systems should be divided into two parts, In-Band-Out-of-SubBand (IBOSB) leakage and Out-Of-Band (OOB) radiation. A scheme...
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Whitepapers
Spatial Spectrum Holes for Cognitive Radio With Directional Transmission
October 29, 2008, 12:00am PDT
In this paper, the authors propose a Cognitive Radio (CR) transmission scheme, which enables secondary users to coexist with primary users by exploiting Spatial Spectrum Holes (SSHs) through...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Modulation Recognition in Multipath Fading Channels Using Cyclic Spectral Analysis
October 29, 2008, 12:00am PDT
In this paper, the authors propose a novel signal classification method using cyclic spectral analysis and neural networks for multipath fading channels. The proposed system provides excellent...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Hybrid Wireless-Optical Broadband Access Network (WOBAN): Capacity Enhancement for Wireless Access
October 29, 2008, 12:00am PDT
Noting that the optical part of a hybrid Wireless-Optical Broadband Access Network (WOBAN) has high capacity, the authors need to enhance the capacity for wireless access using a low-cost...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Management and Security for Grid, Cloud and Cognitive Networks
December 19, 2011, 12:00am PST
This paper presents a number of research initiatives related to innovative and cut-edge technologies for Cloud Computing. These are chiefly in the fields of environment security, quality...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Towards Benchmarking Intrusion Detection Systems for Virtualized Cloud Environments
February 25, 2013, 12:00am PST
The cloud computing paradigm, with virtualization as key enabling technology, is constantly gaining in popularity. However, the wide migration to cloud systems is challenged by security concerns....
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Whitepapers
A Greedy Spectrum Sharing Algorithm for Cognitive Radio Networks
March 9, 2012, 12:00am PST
In this paper, the authors propose a novel simple heuristic algorithm for scheduling the secondary link activation and provide a dynamic spectrum sharing in cognitive radio networks. This...
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Whitepapers
BEP and Throughput Analysis of Incremental Selective Relaying in DS-CDMA Systems
December 28, 2012, 12:00am PST
In this paper, the authors derive exact form expressions for the Bit Error Probability (BEP) and throughput of cooperative Direct Sequence-Code Division Multiple Access (DS-CDMA) systems using...
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Greedy Spectrum Sharing for Cognitive MIMO Networks
August 23, 2012, 12:00am PDT
Cognitive radio is regarded as an emerging technique developed to enhance the efficiency of spectrum usage. In this paper, the authors consider a point-to-multipoint secondary network sharing...
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Distributed Relay Selection Strategy Based on Source-Relay Channel
June 11, 2010, 12:00am PDT
Recent results on cooperative networks have shown great potential in their ability to improve the system performance in the presence of fading channels by using different users' antennas. However,...
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Whitepapers
Optimal Spectrum Sharing in MIMO Cognitive Radio Networks Via Semidefinite Programming
November 17, 2010, 12:00am PST
In Cognitive Radio (CR) networks with Multiple-Input Multiple-Output (MIMO) links, Secondary Users (SUs) can exploit "Spectrum holes" in the space domain to access the spectrum allocated to a...
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Whitepapers
Distributionally Robust Slow Adaptive OFDMA With Soft QoS Via Linear Programming
February 18, 2013, 12:00am PST
Being the predominant air interface of next-generation wireless standards, Orthogonal Frequency Division Multiple Access (OFDMA) is well known for its flexibility in allocating subcarriers to...
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Whitepapers
Optimal Schedules for the D-Node Half Duplex Phase Fading MRC
July 3, 2009, 12:00am PDT
In this paper, the authors extend their previous work on the half duplex Multiple-Relay Channel (MRC). A capacity upper bound based on the max-flow min-cut argument and achievable transmission...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Capacity Theorems for the AWGN Multi-Way Relay Channel
June 18, 2010, 12:00am PDT
The L-user additive white Gaussian noise multi-way relay channel is considered, where multiple users exchange information through a single relay at a common rate. Existing coding strategies, i.e.,...
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Achievable Rate Regions of the Butterfly Network With Noisy Links and End-to-End Error Correction
August 24, 2011, 12:00am PDT
In this paper, the authors characterize achievable rate regions of different decoding strategies on the butterfly network with noisy links and end-to-end error correction. It has been shown, by...
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The Binary-Symmetric Parallel-Relay Network
June 18, 2010, 12:00am PDT
The authors present capacity results of the binary-symmetric parallel-relay network, where there is one source, one destination, and K relays in parallel. They show that forwarding relays, where...
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Functional-Decode-Forward for the General Discrete Memoryless Two-Way Relay Channel
February 3, 2012, 12:00am PST
The authors consider the general discrete memoryless two-way relay channel, where two users exchange messages via a relay, and propose two functional-decode-forward coding strategies for this...
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Whitepapers
The Capacity of a Class of Multi-Way Relay Channels
February 16, 2012, 12:00am PST
The capacity of a class of multi-way relay channels, where L users communicate via a relay (at possibly different rates), is derived for the case where the channel outputs are modular sums of the...
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The Two-Way Relay Network With Arbitrarily Correlated Sources and an Orthogonal MAC
November 17, 2011, 12:00am PST
The problem of lossless joint source-channel coding for the two-way relay network with an orthogonal multiple access channel is studied. Necessary and sufficient conditions for reliable...
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The Finite Field Multi-Way Relay Channel With Correlated Sources: The Three-User Case
November 17, 2011, 12:00am PST
The three-user finite field multi-way relay channel with correlated sources is considered. The three users generate possibly correlated messages, and each user is to transmit its message to the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On Achievable Rate Regions of the Asymmetric AWGN Two-Way Relay Channel
November 17, 2011, 12:00am PST
This paper investigates the additive white Gaussian noise two-way relay channel, where two users exchange messages through a relay. Asymmetrical channels are considered where the users can...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Coding Strategies for Multiple-Access Channels With Feedback and Correlated Sources
October 1, 2007, 12:00am PDT
The Multiple-Access Channel with Feedback and Correlated Sources (MACFCS) models a sensor network in which sensors collect and transmit correlated data to a common sink. The authors present four...
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An Optimal Coding Strategy for the Binary Multi-Way Relay Channel
April 1, 2010, 12:00am PDT
The authors derive the capacity of the binary multi-way relay channel, in which multiple users exchange messages at a common rate through a relay. The capacity is achieved using a novel...
Provided by Institute of Electrical & Electronic Engineers
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An Information Theoretic Take on Time Reversal for Nonstationary Channels
April 1, 2013, 12:00am PDT
It has been shown that Time-Reversal (TR) techniques focus energy back to the dominant scatters, lead to super-resolution focusing, and gains in detection. Time reversal has so far mainly been...
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Using Sybil Identities for Primary User Emulation and Byzantine Attacks in DSA Networks
January 17, 2012, 12:00am PST
In this paper, the authors investigate a new type of denial-of-service attack in dynamic spectrum access networks - Sybil-enabled attack. In this attack, the attacker not only launches the Primary...
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Analysis of Coordinated Denial-of-Service Attacks in IEEE 802.22 Networks
April 1, 2011, 12:00am PDT
The cognitive radio enabled IEEE 802.22 Wireless Regional Area Network (WRAN) is designed to opportunistically utilize the unused or under-utilized TV bands. However, due to the open nature of...
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Optimal Joint Power Allocation and Phase Control for DS-CDMA Cognitive Radio Networks
January 17, 2012, 12:00am PST
Efficient and fair resource allocation in Cognitive Radio (CR) networks under strict constraints imposed by the primary network is a challenging problem for underlay Dynamic Spectrum Access (DSA)...
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Human Society Inspired Dynamic Spectrum Access Networks: The Effect of Parochialism
January 17, 2012, 12:00am PST
In this paper, the authors investigate the parochialism in dynamic spectrum access networks and its effect on spectrum resource competition and self-coexistence among cognitive radio secondary...
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Antenna Selection in Interference-Constrained Underlay Cognitive Radios: SEP-Optimal Rule and Performance Benchmarking
February 1, 2013, 12:00am PST
In the underlay mode of cognitive radio, secondary users are allowed to transmit when the primary is transmitting, but under tight interference constraints that protect the primary. However, these...
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Training for Antenna Selection in Time-Varying Channels: Optimal Selection, Energy Allocation, and Energy Efficiency Evaluation
April 3, 2013, 12:00am PDT
Single receive Antenna Selection (AS) is a popular method for obtaining diversity benefits without the additional costs of multiple radio receiver chains. Since only one antenna receives at any...
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A Virtual MIMO Path-Time Code for Cognitive Ad Hoc Networks
January 1, 2013, 12:00am PST
Cognitive Radio Networks (CRNs) consisting of opportunistic links greatly elevate the networking throughput per bandwidth in future wireless communications. In this paper, the authors show that by...
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A Predator-Prey Model for Dynamics of Cognitive Radios
March 1, 2013, 12:00am PST
Cognitive radio technology is well-known to enhance spectrum utilization via opportunistic transmission at link level. However, the time dynamics of spectrum utilization among primary system users...
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Evaluation of Wireless Resonant Power Transfer Systems With Human Electromagnetic Exposure Limits
October 25, 2012, 12:00am PDT
This paper provides recommendations for scientifically sound methods of evaluating compliance of wireless power transfer systems with respect to human electromagnetic exposure limits. Methods for...
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Delay-Optimal Power Control Policies
October 1, 2012, 12:00am PDT
The Delay Till Success (DTS) is the mean number of transmissions needed, averaged over the fading, until a single packet is successfully received (decoded) over a wireless link. This paper shows...
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Spatial Stochastic Models and Metrics for the Structure of Base Stations in Cellular Networks
February 1, 2013, 12:00am PST
The spatial structure of Base Stations (BSs) in cellular networks plays a key role in evaluating the downlink performance. In this paper, different spatial stochastic models (the Poisson Point...
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Joint Design of Channel and Network Coding for Star Networks
December 18, 2012, 12:00am PST
Channel coding alone is not sufficient to reliably transmit a message of finite length K from a source to one or more destinations as in, e.g., file transfer. To ensure that no data is lost, it...
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The Local Delay in Mobile Poisson Networks
January 20, 2013, 12:00am PST
For communication between two neighboring nodes in wireless networks, the local delay, which is defined as the time it takes a node to successfully transmit a packet, is an important quantity....
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Managing Interference Correlation Through Random Medium Access
April 2, 2013, 12:00am PDT
The capacity of wireless networks is fundamentally limited by interference. However, little research has focused on the interference correlation, which may greatly increase the local delay (namely...
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Stochastic Geometry for Modeling, Analysis, and Design of Multi-Tier and Cognitive Cellular Wireless Networks: A Survey
April 20, 2013, 12:00am PDT
For more than three decades, stochastic geometry has been used to model large-scale ad hoc wireless networks, and it has succeeded to develop tractable models to characterize and better understand...
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Random Backoff Control to Thwart Malicious Behavior in WLANs
February 8, 2013, 12:00am PST
Providing a fair and secure medium access scheme is a fundamental requirement in centralized wireless networks. However, IEEE 802.11 systems do not provide any fairness control mechanism and...
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Channel and Traffic Status Aware Relay Selection and Traffic Queue a Nalysis in Wireless User-Relaying Networks
August 10, 2012, 12:00am PDT
User relaying is a very effective technique to achieve cooperative diversity in wireless networks. In this paper, a new relay selection scheme is proposed jointly considering the channel...
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Design and Performance Investigation of a Dual-Element PIFA Array at 2.5 GHz for MIMO Terminal
July 16, 2009, 12:00am PDT
A study is described of a modified Planar Inverted-F Antenna (PIFA) operating in 2.5 GHz band on a Printed Circuit Board (PCB) of a mobile phone handset. The antenna dimension is reduced...
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Stacked Patch Circular Polarized Antenna for GPS/Galileo Receiver Applications
May 29, 2012, 12:00am PDT
Global Positioning System (GPS) is a satellite radio navigation system that makes use of a Medium Earth Orbit (MEO) satellite constellation for positioning and navigation. Presently, several...
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Performance Evaluation of Power Control Algorithm for TV White Space Resource in UK
January 22, 2013, 12:00am PST
The digital switchover plan in the UK, expected to be completed in 2012, is capable of freeing up a total of about 240MHz TV bandwidth. This includes the license-exempt access to TV White Spaces...
Provided by Institute of Electrical & Electronic Engineers
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