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University of Illinois
(507 results)-
Whitepapers
S3A: Secure System Simplex Architecture for Enhanced Security of Cyber-Physical Systems
February 26, 2012, 12:00am PST
Until recently, cyber-physical systems, especially those with safety-critical properties that manage critical infrastructure (e.g. power generation plants, water treatment facilities, etc.) were...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Securing Tor Tunnels Under the Selective-DoS Attack
May 5, 2011, 12:00am PDT
Low-latency anonymity networks like Tor are subject to selective Denial-of-Service (DoS) attack. Selective-DoS attack lowers anonymity as it forces paths to be rebuilt multiple times to ensure...
Provided by University of Illinois at Chicago
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Whitepapers
Fictitious Play with Time-Invariant Frequency Update for Network Security
June 17, 2010, 12:00am PDT
The authors explain two-player security games which can be viewed as sequences of nonzero-sum matrix games played by an Attacker and a Defender. The evolution of the game is based on a stochastic...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Security Games with Decision and Observation Errors
March 14, 2010, 12:00am PST
The authors explain two-player security games which can be viewed as sequences of nonzero-sum matrix games played by an Attacker and a Defender. The evolution of the game is based on a stochastic...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Assisted Common Information with Applications to Secure Two-Party Computation
February 9, 2010, 12:00am PST
Secure multi-party computation is a central problem in modern cryptography. An important sub-class of this are problems of the following form: Alice and Bob desire to produce sample(s) of a pair...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Heavy Traffic Optimal Resource Allocation Algorithms for Cloud Computing Clusters
June 6, 2012, 12:00am PDT
Cloud computing is emerging as an important platform for business, personal and mobile computing applications. In this paper, the authors explain a stochastic model of cloud computing, where jobs...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Fixed and Market Pricing for Cloud Services
January 26, 2012, 12:00am PST
This paper considers two simple pricing schemes for selling cloud instances and studies the trade-off between them. The authors characterize the equilibrium for the hybrid system where arriving...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
A General Framework for Distributed Vote Aggregation
December 11, 2012, 12:00am PST
The authors present a general model for opinion dynamics in a social network together with several possibilities for object selections at times when the agents are communicating. They explain the...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Low Rank Mechanism for Optimizing Batch Queries Under Differential Privacy
December 11, 2012, 12:00am PST
Differential privacy is a promising privacy-preserving paradigm for statistical query processing over sensitive data. It works by injecting random noise into each query result, such that it is...
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Optimal Cooperative Spectrum Sensing in Cognitive Radio with Taguchi Method
August 2, 2012, 12:00am PDT
Spectrum sensing is an essential topic in cognitive radio networks to detect primary users. Cooperative spectrum sensing with linear fusion scheme is studied in multiband channel systems. The...
Provided by University of Illinois
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Whitepapers
LowRank Mechanism: Optimizing Batch Queries Under Differential Privacy
December 11, 2012, 12:00am PST
Differential privacy is a promising privacy-preserving paradigm for statistical query processing over sensitive data. It works by injecting random noise into each query result, such that it is...
Provided by University of Illinois at Chicago
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Whitepapers
Securing Anonymous Communication Channels Under the Selective DoS Attack
December 18, 2012, 12:00am PST
Anonymous communication systems are subject to selective Denial-of-Service (DoS) attacks. Selective DoS attacks lower anonymity as they force paths to be rebuilt multiple times to ensure delivery...
Provided by University of Illinois at Chicago
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Whitepapers
Faster Batch Forgery Identification
September 19, 2012, 12:00am PDT
The authors' goal in this paper is to minimize the cost of elliptic-curve signature verification. Batch signature verification detects whether a batch of signatures contains any forgeries. Batch...
Provided by University of Illinois
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Whitepapers
Computing Small Discrete Logarithms Faster
September 18, 2012, 12:00am PDT
Computations of small discrete logarithms are feasible even in "Secure" groups, and are used as subroutines in several cryptographic protocols in the literature. For example, the Boneh-Goh-Nissim...
Provided by University of Illinois
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Whitepapers
Never Trust a Bunny
June 21, 2012, 12:00am PDT
Lapin is a lightweight "RFID authentication" system introduced at FSE 2012. The system is claimed to be "Provably Secure Against Active Attacks". This claim is qualified elsewhere in: attacking...
Provided by University of Illinois
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Whitepapers
SipHash: A Fast Short-Input PRF
September 18, 2012, 12:00am PDT
SipHash is a family of pseudorandom functions optimized for short inputs. Target applications include network traffic authentication and hash-table lookups protected against hash-flooding...
Provided by University of Illinois
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Whitepapers
WAVES: Automatic Synthesis of Client-Side Validation Code for Web Applications
December 11, 2012, 12:00am PST
The current practice of web application development treats the client and server components of the application as two separate but interacting pieces of software. Each component is written...
Provided by University of Illinois
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Whitepapers
RAINBOW: A Robust and Invisible Non-Blind Watermark for Network Flows
December 25, 2008, 12:00am PST
Linking network flows is an important problem in intrusion detection as well as anonymity. Passive traffic analysis can link flows but requires long periods of observation to reduce errors....
Provided by University of Illinois at Urbana Champaign
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Whitepapers
Systems Support for Radiational Plume Detection, Identication, and Tracking Sensor-Cyber Networks
January 1, 2013, 12:00am PST
Oak Ridge National Lab (ORNL), University of Illinois at Urbana Champaign (UIUC), and Purdue University are collaborative partners in a sensor-cyber network project supported under the national...
Provided by University of Illinois at Chicago
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White Papers
Compute and Storage Clouds Using Wide Area High Performance Networks
July 16, 2008, 12:00am PDT
The authors describe a cloud based infrastructure that they have developed that is optimized for wide area, high performance networks and designed to support data mining applications. The...
Provided by University of Illinois
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White Papers
ModflowOnAzure: An On-Demand "Groundwater Modeling as a Service" Solution
November 15, 2010, 12:00am PST
Cloud computing has emerged as one of the preferred platforms for on-demand, event-driven computing. However, literature on event-driven scientific modeling on the cloud is sparse. This paper...
Provided by University of Illinois
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White Papers
Dynamic Clustering for Acoustic Target Tracking in Wireless Sensor Networks
January 1, 2011, 12:00am PST
In the paper, the authors devise and evaluate a fully decentralized, light-weight, dynamic clustering algorithm for target tracking. Instead of assuming the same role for all the sensors, they...
Provided by University of Illinois
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White Papers
Reconsidering Power Management
July 16, 2007, 12:00am PDT
Power-management approaches have been widely studied in an attempt to conserve idling energy by allowing nodes to switch to a low-power sleep mode. However, due to the inherent inability of...
Provided by University of Illinois
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White Papers
Optimizing Multi-Deployment on Clouds by Means of Self-Adaptive Prefetching
May 20, 2011, 12:00am PDT
With Infrastructure-as-a-Service (IaaS) cloud economics getting increasingly complex and dynamic, resource costs can vary greatly over short periods of time. Therefore, a critical issue is the...
Provided by University of Illinois
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White Papers
A Virtual Instruction Set Interface for Operating System Kernels
January 1, 2011, 12:00am PST
In this paper, the authors propose and evaluate a virtual instruction set interface between an Operating System (OS) kernel and a general purpose processor architecture. This interface is a set of...
Provided by University of Illinois
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White Papers
Performance Analysis of RVQ-Based Limited Feedback Beamforming Codebooks
January 15, 2009, 12:00am PST
Codebooks based on Random Vector Quantization (RVQ) are popular in limited feedback beamforming applications over MIMO channels because of their low-complexity properties. The goal of this paper...
Provided by University of Illinois
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White Papers
Quickest Change Detection of a Markov Process Across a Sensor Array
December 1, 2008, 12:00am PST
Recent attention in quickest change detection in the multi-sensor setting has been on the case where the densities of the observations change at the same instant at all the sensors due to the...
Provided by University of Illinois
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White Papers
Low-Complexity Structured Precoding for Spatially Correlated MIMO Channels
May 29, 2008, 12:00am PDT
The focus of this paper is on spatial precoding in correlated multi-antenna channels, where the number of independent data-streams is adapted to trade-off the data-rate with the transmitter...
Provided by University of Illinois
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White Papers
Why Does the Kronecker Model Result in Misleading Capacity Estimates?
July 30, 2008, 12:00am PDT
Many recent works that study the performance of Multi-Input Multi-Output (MIMO) systems in practice assume a Kronecker model where the variances of the channel entries, upon decomposition on to...
Provided by University of Illinois
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White Papers
Quantized Multimode Precoding in Spatially Correlated Multi-Antenna Channels
December 30, 2007, 12:00am PST
Multimode precoding, where the number of independent data-streams is adapted optimally, can be used to maximize the achievable throughput in multi-antenna communication systems. Motivated by...
Provided by University of Illinois
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White Papers
To Code or Not to Code Across Time: Space-Time Coding With Feedback
April 16, 2008, 12:00am PDT
Space-time codes leverage the availability of multiple antennas to enhance the reliability of communication over wireless channels. While space-time codes have initially been designed with a focus...
Provided by University of Illinois
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White Papers
Capacity of Sparse Wideband Channels With Partial Channel Feedback
January 24, 2008, 12:00am PST
This paper studies the ergodic capacity of wideband multipath channels with partial/limited channel state feedback. The authors' work builds on recent results that show a significant capacity gain...
Provided by University of Illinois
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White Papers
Angular Domain Processing for MIMO Wireless Systems With Non-Uniform Antenna Arrays
December 15, 2008, 12:00am PST
Many recent works have proposed spatial channel models for MIMO applications in the 1 to 10 GHz band. However, recent attention has shifted to the 60 GHz regime where the opening up of the...
Provided by University of Illinois
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White Papers
Quickest Detection of a Change Process Across a Sensor Array
May 12, 2008, 12:00am PDT
Recent attention in quickest change detection in a multi-sensor scenario has been on the case where the densities of the observations at all the sensors change instantaneously at the time of...
Provided by University of Illinois
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White Papers
Impact of Mismatched Statistics on Correlated Mimo Capacity
October 6, 2007, 12:00am PDT
Many recent works that study the impact of spatial correlation on the performance of Multi-Input Multi-Output (MIMO) systems assume a separable (also known as the Kronecker) model where the...
Provided by University of Illinois
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White Papers
MOve: Design of an Application-Malleable Overlay
January 1, 2011, 12:00am PST
Peer-to-peer overlays allow distributed applications to work in a wide-area, scalable, and fault-tolerant manner. However, most structured and unstructured overlays present in literature today are...
Provided by University of Illinois
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White Papers
Using Tractable and Realistic Churn Models to Analyze Quiescence Behavior of Distributed Protocols
July 24, 2008, 12:00am PDT
Large-scale distributed systems are subject to churn, i.e., continuous arrival, departure and failure of processes. Analysis of protocols under churn requires one to use churn models that are...
Provided by University of Illinois
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White Papers
Fair K Mutual Exclusion Algorithm for Peer to Peer Systems
March 23, 2008, 12:00am PDT
k-mutual exclusion is an important problem for resource-intensive peer-to-peer applications ranging from aggregation to file download. In order to be practically useful, k-mutual exclusion...
Provided by University of Illinois
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White Papers
Joint Resource Allocation and Admission Control in Wireless Mesh Networks
May 1, 2009, 12:00am PDT
Many next generation applications (such as video flows) are likely to have associated minimum data rate requirements to ensure satisfactory quality as perceived by end-users. While there have been...
Provided by University of Illinois
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White Papers
Estimating The Intrinsic Value Of An Enterprise With An Integrated Financial Management System
November 30, 2007, 12:00am PST
Learning the process of estimating the intrinsic value of an enterprise can be extremely frustrating to students because it involves a deep understanding of numerous complex relationships. The...
Provided by University of Illinois
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White Papers
Denial in DTNs
January 19, 2010, 12:00am PST
Disruption-Tolerant Network (DTN) is an intermittently connected network where the traditional end-to-end data communication between a source-destination pair is hardly possible. Instead, nodes...
Provided by University of Illinois
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White Papers
Troubleshooting Interactive Complexity Bugs in Wireless Sensor Networks Using Data Mining Techniques
September 20, 2010, 12:00am PDT
This paper presents a tool for uncovering bugs due to interactive complexity in networked sensing applications. Such bugs are not localized to one component that is faulty, but rather result from...
Provided by University of Illinois
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White Papers
Identifying Malicious Nodes in Network-Coding-Based Peer-to-Peer Streaming Networks
August 1, 2009, 12:00am PDT
Researchers show that network coding can greatly improve the quality of service in P2P live streaming systems (e.g., IPTV). However, network coding is vulnerable to pollution attacks where...
Provided by University of Illinois
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White Papers
Alibi: A Framework for Identifying Insider-Based Jamming Attacks in Multi-Channel Wireless Networks
July 31, 2009, 12:00am PDT
The authors consider the problem of identifying the insider-based attacks in the form of jammers in multi-channel wireless networks, where jammers have the inside knowledge of frequency hopping...
Provided by University of Illinois
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White Papers
An Adaptive Content Distribution Protocol for Clustered Mobile Peer-to-Peer Networks
September 28, 2009, 12:00am PDT
In this paper, the authors show that the clustered mobile Peer-To-Peer (P2P) networks exist in numerous scenarios where mobile users collaborate to improve content distribution services. In order...
Provided by University of Illinois
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White Papers
Types, Regions, and Effects for Safe Programming With Object-Oriented Parallel Frameworks
September 8, 2009, 12:00am PDT
Object-oriented frameworks can make parallel programming easier by providing generic parallel algorithms such as map, reduce, or scan, and letting the user fill in the details with sequential...
Provided by University of Illinois
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White Papers
An Adaptive-Reliability Cyber-Physical Transport Protocol for Spatio-Temporal Data
May 26, 2009, 12:00am PDT
In this paper, the authors propose a new transport protocol for data collection in sensor networks that monitor physical phenomena. In a network with variable channel condition, this protocol...
Provided by University of Illinois
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White Papers
Confluence: A System for Lossless Multi-Source Single-Sink Data Collection
April 27, 2009, 12:00am PDT
Distributed environments often require collection of large amounts of critical and raw data from multiple locations to a central clearinghouse, e.g., task results or large datasets from multiple...
Provided by University of Illinois
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White Papers
Applying the Theory of Task-Technology Fit to Mobile Technology: The Role of User Mobility
August 27, 2007, 12:00am PDT
In this paper, the authors apply the theory of task technology fit to mobile technology, focusing specifically on the role of user mobility. They describe the results of an empirical study of 216...
Provided by University of Illinois at Urbana-Champaign
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White Papers
Preventing History Forgery With Secure Provenance
May 24, 2009, 12:00am PDT
As increasing amounts of valuable information are produced and persist digitally, the ability to determine the origin of data becomes important. In science, medicine, commerce, and government,...
Provided by University of Illinois
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White Papers
Cross-Layer Quality Assessment of Wireless Video Transmission Over Mobile Broadcast Networks
March 16, 2009, 12:00am PDT
The recent development of high-speed data transmission over wireless cellular networks has enabled the delivery of multimedia broadcasting services to mobile users. These services involve a range...
Provided by University of Illinois
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White Papers
Effective Ranking of XML Keyword Search Results (Extended Version)
March 19, 2009, 12:00am PDT
The popularity of XML has exacerbated the need for an easy-to-use, high precision query interface for XML data. When traditional document-oriented keyword search techniques do not suffice, natural...
Provided by University of Illinois
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White Papers
Runtime Verification of C Memory Safety
March 30, 2009, 12:00am PDT
C is the most widely used imperative system's implementation language. While C provides types and high-level abstractions, its design goal has been to provide highest performance which often...
Provided by University of Illinois
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White Papers
iShare: Exploiting Opportunistic Ad Hoc Connections for Improving Data Download of Cellular Users
December 6, 2008, 12:00am PST
This paper presents an Incentive-based Sharing (iShare) protocol that blends cellular and ad hoc networks for content dissemination services. With iShare, mobile users download content from a...
Provided by University of Illinois
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White Papers
WCET-Aware Optimization of Shared Cache Partition and Bus Arbitration for Hard Real-Time Multicore Systems
May 1, 2011, 12:00am PDT
In recent years, multicore processors have been receiving a significant amount of attention from avionic and automotive industries as the demand for high-end real-time applications drastically...
Provided by University of Illinois
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White Papers
Using the High Productivity Language Chapel to Target GPGPU Architectures
April 25, 2011, 12:00am PDT
It has been widely shown that GPGPU architectures offer large performance gains compared to their traditional CPU counterparts for many applications. The downside to these architectures is that...
Provided by University of Illinois
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White Papers
Security Through Amnesia: A Software-Based Solution to the Cold Boot Attack on Disk Encryption
April 23, 2011, 12:00am PDT
Disk encryption has become an important security measure for a multitude of clients, including governments, corporations, activists, security-conscious professionals, and privacy-conscious...
Provided by University of Illinois
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White Papers
Reliability Trade-Off Analysis of Deadline-Sensitive Wireless Messaging Systems
March 21, 2011, 12:00am PDT
The need for deadline-sensitive messaging systems is growing fast with the growth in the number of mobile and static devices communicating with each other. With many such devices from different...
Provided by University of Illinois
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White Papers
Securing Vehicular Networks With VIBES
March 30, 2010, 12:00am PDT
One of the biggest challenges in making vehicular networks a reality is security. Aside from the clear need for vehicles to be able to authenticate messages from certain personnel, such as police...
Provided by University of Illinois
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White Papers
DeLorean: Recording and Deterministically Replaying Shared-Memory Multiprocessor Execution Efficiently
March 26, 2008, 12:00am PDT
Support for deterministic replay of multithreaded execution can greatly help in finding concurrency bugs. For highest effectiveness, replay schemes should record at production-run speed, keep...
Provided by University of Illinois
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White Papers
Routing Tables: Is Smaller Really Much Better?
October 15, 2009, 12:00am PDT
The authors examine the case for small Internet routing and forwarding tables in the context of router design. If Moore's Law drives cost effective scaling of hardware performance in excess of the...
Provided by University of Illinois
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White Papers
CPU Gradients: Performance-Aware Energy Conservation in Multitier Systems
August 8, 2010, 12:00am PDT
Dynamic Voltage and Frequency Scaling (DVFS) and Virtual Machine (VM) based server consolidation are well known CPU scaling techniques for energy conservation that can have an adverse impact on...
Provided by University of Illinois
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White Papers
Optimal Scheduling for Fair Resource Allocation in Ad Hoc Networks With Elastic and Inelastic Traffic
December 13, 2009, 12:00am PST
This paper studies the problem of congestion control and scheduling in ad hoc wireless networks that have to support a mixture of best-effort and real-time traffic. Optimization and stochastic...
Provided by University of Illinois
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White Papers
The Open Cloud Testbed: A Wide Area Testbed for Cloud Computing Utilizing High Performance Network Services
July 28, 2009, 12:00am PDT
Recently, a number of cloud platforms and services have been developed for data intensive computing, including Hadoop, Sector, CloudStore (formerly KFS), HBase, and Thrift. In order to benchmark...
Provided by University of Illinois
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White Papers
An Overview of Data Aggregation Architecture For1 Real-Time Tracking With Sensor Networks
January 1, 2011, 12:00am PST
Since sensor nodes normally have limited resources in terms of energy, bandwidth and computation capability, efficiency is a key design goal in sensor network research. As one of techniques to...
Provided by University of Illinois
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White Papers
Reciprocity in Linear Deterministic Networks Under Linear Coding
July 9, 2009, 12:00am PDT
The linear deterministic model has been used recently to get a first order understanding of many wireless communication network problems. In many of these cases, it has been pointed out that the...
Provided by University of Illinois
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White Papers
Reliability and Route Diversity in Wireless Networks
October 1, 2008, 12:00am PDT
The authors study the problem of communication reliability of wireless networks in a fading environment based on the outage probability formulation. The exact expression for the disconnect...
Provided by University of Illinois
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White Papers
Minimizing Maximum Response Time and Delay Factor in Broadcast Scheduling
June 11, 2009, 12:00am PDT
The authors consider online algorithms in pull-based broadcasting. In this model there are n pages (representing some form of useful information) available at a server and clients request a page...
Provided by University of Illinois
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White Papers
Attribute-Sets: A Practically Motivated Enhancement to Attribute-Based Encryption
July 27, 2009, 12:00am PDT
In distributed systems users need to share sensitive objects with others based on the recipients' ability to satisfy a policy. Attribute-Based Encryption (ABE) is a new paradigm where such...
Provided by University of Illinois
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White Papers
Attribute-Based Signatures
November 22, 2010, 12:00am PST
The authors introduce Attribute-Based Signatures (ABS), a versatile primitive that allows a party to sign a message with ne-grained control over identifying information. In ABS, a signer, who...
Provided by University of Illinois
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White Papers
On Approximating Gaussian Relay Networks With Deterministic Networks
August 9, 2009, 12:00am PDT
The authors examine the extent to which Gaussian relay networks can be approximated by deterministic networks, and present two results, one negative and one positive. The gap between the...
Provided by University of Illinois
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White Papers
Embedding Data Within Knowledge Spaces
February 4, 2009, 12:00am PST
The promise of e-Science will only be realized when data is discoverable, accessible, and comprehensible within distributed teams, across disciplines, and over the long-term - without reliance on...
Provided by University of Illinois
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White Papers
Q-CSMA: Queue-Length Based CSMA/CA Algorithms for Achieving Maximum Throughput and Low Delay in Wireless Networks
December 16, 2009, 12:00am PST
Recently, it has been shown that CSMA-type random access algorithms can achieve the maximum possible throughput in ad hoc wireless networks. However, these algorithms assume an idealized...
Provided by University of Illinois
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White Papers
On the Security of Index Coding With Side Information
February 14, 2011, 12:00am PST
The problem of Index Coding with Side Information (ICSI) was introduced by Birk and Kol,. It was motivated by applications such as audio and video-on-demand, and daily newspaper delivery. In these...
Provided by University of Illinois at Urbana-Champaign
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White Papers
Distributed Resource Allocation for Proportional Fairness in Multi-Band Wireless Systems
February 13, 2011, 12:00am PST
A challenging problem in multi-band multi-cell self-organized wireless systems, such as multi-channel Wi-Fi networks, femto/pico cells in 3G/4G cellular networks, and more recent wireless networks...
Provided by University of Illinois
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White Papers
(Approximately) Privacy-Preserving Dissection Protocols
February 7, 2011, 12:00am PST
The authors further investigate the approximate privacy model recently introduced by Feigenbaum et al. They explore the privacy properties of a natural class of communication protocols that they...
Provided by University of Illinois at Chicago
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White Papers
Network Coding Over a Noisy Relay : A Belief Propagation Approach
February 1, 2008, 12:00am PST
In recent years, network coding has been investigated as a method to obtain improvements in wireless networks. A typical assumption of previous work is that relay nodes performing network coding...
Provided by University of Illinois
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White Papers
AdJail: Practical Enforcement of Confidentiality and Integrity Policies on Web Advertisements
June 2, 2010, 12:00am PDT
Web publishers frequently integrate third-party advertisements into web pages that also contain sensitive publisher data and end-user personal data. This practice exposes sensitive page content to...
Provided by University of Illinois at Chicago
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White Papers
BotGrep: Finding P2P Bots with Structured Graph Analysis
June 1, 2010, 12:00am PDT
A key feature that distinguishes modern botnets from earlier counterparts is their increasing use of structured overlay topologies. This lets them carry out sophisticated coordinated activities...
Provided by University of Illinois at Urbana-Champaign
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White Papers
VEX: Vetting Browser Extensions for Security Vulnerabilities
June 2, 2010, 12:00am PDT
The browser has become the de facto platform for everyday computation. Among the many potential attacks that target or exploit browsers, vulnerabilities in browser extensions have received...
Provided by University of Illinois at Urbana Champaign
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