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Crown
(84 results)-
White Papers
Solutions for Business: Supporting Success
October 23, 2008, 12:00am PDT
Increasing competitive and open economies that have made the whole globe a one big market make it necessary for businesses to look for support for its survival. A company can easily sale over...
Provided by Crown
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White Papers
ITIL Practices for Service Management: Intermediate Lifecycle Stream
August 27, 2008, 12:00am PDT
The ITIL Intermediate Qualification: Service Strategy Certificate is a free-standing qualification, but is also part of the ITIL Intermediate Lifecycle stream, and one of the modules that leads to...
Provided by Crown
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White Papers
Policies for Self Tuning Home Networks
September 1, 2009, 12:00am PDT
A Home Network (HN) is usually managed by a user who does not possess knowledge and skills required to perform management tasks. When abnormalities are detected, it is desirable to let the network...
Provided by Crown
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White Papers
A Novel QoS in Node-Disjoint Routing for Ad Hoc Networks
April 17, 2008, 12:00am PDT
Ad hoc network (MANET) is a collection of mobile nodes that can communicate with each other without using any fixed infrastructure. To support multimedia applications MANETs require an efficient...
Provided by Crown
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White Papers
A Transmodel Based XML Schema for the Google Transit Feed Specification With a GTFS / Transmodel Comparison
December 29, 2008, 12:00am PST
This paper compares the Google Transit Feed Specification (GTFS) with then equivalent elements from Transmodel and then out lines a proposal to create a Transmodel based XML schema for exchanging...
Provided by Crown
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White Papers
A DSL-Based Approach to Software Development and Deployment on Cloud
May 27, 2010, 12:00am PDT
With the advent of Cloud computing massively scalable and cost effective IT resources can be accessed and used seamlessly. Various APIs are made available for manipulating the infrastructure of...
Provided by Crown
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White Papers
An Explanation for Unexpected 802.11 Outdoor Link-Level Measurement Results
January 1, 2008, 12:00am PST
This paper provides experimental evidence that "Weird"/poor outdoor link-level performance measurements may be caused by driver/card-specific antenna diversity algorithms unexpectedly...
Provided by Crown
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White Papers
Select-and-Protest-Based Beaconless Georouting With Guaranteed Delivery in Wireless Sensor Networks
January 1, 2008, 12:00am PST
Recently proposed beaconless georouting algorithms are fully reactive, with nodes forwarding packets without prior knowledge of their neighbors. However, existing approaches for recovery from...
Provided by Crown
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White Papers
A Novel Ray Analogy for Enrolment of Ear Biometrics
March 1, 2010, 12:00am PST
The ear is a maturing biometric with qualities that give it superiority over other biometrics in a number of situations; in particular the ear is relatively immune to variation due to ageing....
Provided by Crown
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White Papers
On Using Gait Biometrics to Enhance Face Pose Estimation
March 1, 2010, 12:00am PST
Many face biometrics systems use controlled environments where subjects are viewed directly facing the camera. This is less likely to occur in surveillance environments, so a process is required...
Provided by Crown
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White Papers
Interactive Quality-Driven Feedback for Biometric Systems
March 1, 2010, 12:00am PST
The application of biometric technology has so far been top-down, driven by governments and law enforcement agencies. The low demand of this technology from the public, despite its many advantages...
Provided by Crown
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White Papers
HeartID: Cardiac Biometric Recognition
March 1, 2010, 12:00am PST
This paper examines the applicability of cardiac signals for biometric recognition. Two physiological signals are considered, namely the Electrocardiogram (ECG) and the Phonocardiogram (PCG) as it...
Provided by Crown
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White Papers
An Expression Transformation for Improving the Recognition of Expression-Variant Faces From One Sample Image Per Person
March 1, 2010, 12:00am PST
It is known that when only one sample image per gallery person is available, as a result of the small sample size problem, the recognition performance of discriminant feature extraction methods...
Provided by Crown
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White Papers
Facial Feature Localization Using Graph Matching With Higher Order Statistical Shape Priors and Global Optimization
March 1, 2010, 12:00am PST
This paper presents a graphical model for deformable face matching and landmark localization under an unknown non-rigid warp. The proposed model learns and combines statistics of both appearance...
Provided by Crown
-
White Papers
The Effect of Time on the Performance of Gait Biometrics
March 1, 2010, 12:00am PST
Many studies have shown that it is possible to recognize people by the way they walk. However, there are a number of covariate factors that affect recognition performance. The time between...
Provided by Crown
-
White Papers
Adaptive Client-Impostor Centric Score Normalization: A Case Study in Fingerprint Verification
September 14, 2009, 12:00am PDT
Cohort-based score normalization as exemplified by the T-norm (for Test normalization) has been the state-of the-art approach to account for the variability of signal quality in testing. On the...
Provided by Crown
-
White Papers
Fingerprint Recognition Performance in Rugged Outdoors and Cold Weather Conditions
September 14, 2009, 12:00am PDT
This paper reports on tests of the performance of fingerprint recognition technology in rugged outdoor conditions, with an especial concentration on the performance in cold weather. The authors...
Provided by Crown
-
White Papers
Local Ordinal Contrast Pattern Histograms for Spatiotemporal, Lip-Based Speaker Authentication
March 1, 2010, 12:00am PST
The lip-region can be interpreted as either a genetic or behavioral biometric trait depending on whether static or dynamic information is used. Despite this breadth of possible application as a...
Provided by Crown
-
White Papers
On Decoding, Mutual Information, and Antenna Selection Diversity for Quasi-Orthogonal STBC With Minimum Decoding Complexity
December 21, 2009, 12:00am PST
ABBA codes are an important class of quasi orthogonal space-time block codes proposed by Tirkkonen et al.. Recently, they have become more attractive for practical applications because Yuen et al....
Provided by Crown
-
White Papers
Joint Frame Synchronization and Carrier Frequency Offset Estimation in Multicarrier Systems
December 21, 2009, 12:00am PST
Orthogonal Frequency Division Multiplexing (OFDM) is an effective technique to combat multipath fading,. In OFDM, the insertion of a guard interval between symbol blocks called Cyclic Prefix (CP)...
Provided by Crown
-
White Papers
Performance Analysis and Optimal Signal Designs for Minimum Decoding Complexity ABBA Codes
December 21, 2009, 12:00am PST
ABBA codes, a class of Quasi-orthogonal Space-Time Block Codes (QSTBC), have been proposed to increase the code rate of Orthogonal Space-Time Block Codes (OSTBC). Since ABBA QSTBC have low...
Provided by Crown
-
Whitepapers
Optimal Matching Between Energy Consumption of Base Stations and Traffic Load in Green Cellular Networks
August 8, 2012, 12:00am PDT
Energy efficiency has become significantly important in designing future green mobile communication systems. In this paper, a novel energy efficiency metric, which is per energy per area capacity,...
Provided by Crown
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Whitepapers
Exact Bit Error Rate of MIMO MRC Systems With Cochannel Interference and Rayleigh Fading
July 27, 2010, 12:00am PDT
In this paper, the authors present a new method for deriving exact expressions for the average Bit Error Rate (BER) of Multiple-Input Multiple-Output (MIMO) wireless systems with transmit...
Provided by Crown
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Whitepapers
Service Engineering for Inter-Domain Overlay Networks
August 6, 2009, 12:00am PDT
In recent years application-level networking (e.g. overlay networks, P2P networks) has become key enabling architecture for supporting distributed services on the Internet. The authors consider...
Provided by Crown
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Whitepapers
LP-Based Optimization of Storage and Retrieval for Distributed Video-on-Demand
November 21, 2012, 12:00am PST
The authors first formulate the optimization problem to an integer program. To address its tractability, they propose a novel, effective and implementable heuristic. The heuristic, termed LP-SR...
Provided by Crown
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Whitepapers
Spectral-Energy Efficiency Tradeoff in Multicell Cellular Networks With Adaptive Relay Cooperation
November 21, 2012, 12:00am PST
By observing that the Relay Stations (RSs) will receive a signal replica of the users' transmissions during the broadcast phase, the authors propose an adaptive relay cooperation scheme. The RSs...
Provided by Crown
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Whitepapers
Downlink TCP Performance Enhancement at Handoff for FMIPv6-Enabled Nodes
December 15, 2010, 12:00am PST
TCP's downlink performance during FMIPv6- enabled IEEE802.11g handoff is examined. The use of a user initiated Handoff Notification, sent prior to handoff, and is proposed. Therefore, the...
Provided by Crown
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Whitepapers
An Optimum Network Selection Solution for Multihomed Hosts Using Hopfield Networks
April 21, 2010, 12:00am PDT
The interworking of heterogeneous network technologies to provide improved coverage and QoS differentiation has attracted some interest within the community. Within 3GPP, some work has focused on...
Provided by Crown
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White Papers
A Lightweight Currency-Based P2P VoD Incentive Mechanism
June 1, 2010, 12:00am PDT
Users in a Peer-To-Peer Video on Demand (P2P VoD) system are allowed to watch any video file at any point in time and to use VCR operations like fast forward, rewind and pause at any time, which...
Provided by Crown
-
White Papers
Behavior-Based Telecom Tariff Service Design With Neural Network Approach
January 1, 2011, 12:00am PST
This paper presents a behavior-based telecommunication tariff service design model. Unlike traditional service design models, which includes demographic attributes to design telecommunication...
Provided by Crown
-
White Papers
LLSiWSN: A New Range-Free Localization Algorithm for Large Scale Wireless Sensor Networks
September 1, 2011, 12:00am PDT
This paper is proposed a range-free localization algorithm in WSN technology. Effective use some useful information for localization algorithm during sensor node deploy process, to avoid...
Provided by Crown
-
White Papers
An Emerging Concept for 4G+ Wireless Cellular Networks: Terminal Relaying
September 1, 2011, 12:00am PDT
The technological foundation of Fourth Generation (4G) cellular systems was outlined in the Long Term Evolution Advanced (LTE-A) standards which enable communication rates of 100 Megabits per...
Provided by Crown
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White Papers
CultureBee : A Fully Wireless Monitoring and Control System for Protecting Cultural Heritage
June 10, 2011, 12:00am PDT
This paper presents a component based wireless monitoring and control system. The system is introduced from both the system architecture and function point of view. The paper begins with the...
Provided by Crown
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White Papers
Performance of Multi-Hop Whisper Cognitive Radio Networks
March 1, 2010, 12:00am PST
In 2003, Federal Communications Commission (FCC) has released a new spectrum policy called "Interference temperature model" to improve the channel access opportunities of secondary users. Under...
Provided by Crown
-
White Papers
Linear Minimum Mean-Squared Error Channel Estimation for Per-Subcarrier Antenna Selection
June 1, 2010, 12:00am PDT
The linear minimum Mean-Squared Error (MSE) channel estimator for systems employing per-subcarrier transmit antenna selection is developed. It is shown that the frequency domain correlations after...
Provided by Crown
-
White Papers
Cooperative Amplify-and-Forward With Trellis Coded Modulation
June 1, 2009, 12:00am PDT
In a cooperative communication network, individual users are encouraged not only to transmit their own data, but also relay other user's data. This relaying transmission creates spatial diversity...
Provided by Crown
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White Papers
Spectrum Aware Opportunistic Routing in Cognitive Radio Networks
March 1, 2010, 12:00am PST
Cognitive Radio (CR) emerges as a key technology to enhance spectrum efficiency and thus creates opportunistic transmissions over links. Supporting the routing function on top of numerous...
Provided by Crown
-
White Papers
Information Epidemics in Complex Networks With Opportunistic Links and Dynamic Topology
March 1, 2010, 12:00am PST
Wireless networks, especially Mobile Ad hoc NETworks (MANET) and Cognitive Radio Networks (CRN), are facing two new challenges beyond traditional random network model: opportunistic links with...
Provided by Crown
-
White Papers
Compressed Sensing Construction of Spectrum Map for Routing in Cognitive Radio Networks
July 1, 2011, 12:00am PDT
Cooperative relay enables general multi-hop Cognitive Radio Networks (CRN) over Cognitive Radios (CR) and nodes of Primary System (PS). However, successful CR networking such as routing relies on...
Provided by Crown
-
White Papers
Adaptive Turbo Trellis Coded Modulation Aided Distributed Space-Time Trellis Coding for Cooperative Communications
August 1, 2010, 12:00am PDT
In this contribution, the authors propose an adaptive Turbo Trellis Coded Modulation (TTCM) aided Distributed Space-Time Trellis Coding (STTC) scheme for cooperative communication over...
Provided by Crown
-
Whitepapers
An Optimum Network Selection Solution for Multihomed Hosts Using Hopfield Networks
April 21, 2010, 12:00am PDT
The interworking of heterogeneous network technologies to provide improved coverage and QoS differentiation has attracted some interest within the community. Within 3GPP, some work has focused on...
Provided by Crown
-
Whitepapers
Downlink TCP Performance Enhancement at Handoff for FMIPv6-Enabled Nodes
December 15, 2010, 12:00am PST
TCP's downlink performance during FMIPv6- enabled IEEE802.11g handoff is examined. The use of a user initiated Handoff Notification, sent prior to handoff, and is proposed. Therefore, the...
Provided by Crown
-
Whitepapers
Spectral-Energy Efficiency Tradeoff in Multicell Cellular Networks With Adaptive Relay Cooperation
November 21, 2012, 12:00am PST
By observing that the Relay Stations (RSs) will receive a signal replica of the users' transmissions during the broadcast phase, the authors propose an adaptive relay cooperation scheme. The RSs...
Provided by Crown
-
Whitepapers
LP-Based Optimization of Storage and Retrieval for Distributed Video-on-Demand
November 21, 2012, 12:00am PST
The authors first formulate the optimization problem to an integer program. To address its tractability, they propose a novel, effective and implementable heuristic. The heuristic, termed LP-SR...
Provided by Crown
-
Whitepapers
Service Engineering for Inter-Domain Overlay Networks
August 6, 2009, 12:00am PDT
In recent years application-level networking (e.g. overlay networks, P2P networks) has become key enabling architecture for supporting distributed services on the Internet. The authors consider...
Provided by Crown
-
Whitepapers
Exact Bit Error Rate of MIMO MRC Systems With Cochannel Interference and Rayleigh Fading
July 27, 2010, 12:00am PDT
In this paper, the authors present a new method for deriving exact expressions for the average Bit Error Rate (BER) of Multiple-Input Multiple-Output (MIMO) wireless systems with transmit...
Provided by Crown
-
Whitepapers
Optimal Matching Between Energy Consumption of Base Stations and Traffic Load in Green Cellular Networks
August 8, 2012, 12:00am PDT
Energy efficiency has become significantly important in designing future green mobile communication systems. In this paper, a novel energy efficiency metric, which is per energy per area capacity,...
Provided by Crown
-
Whitepapers
Applications of Quantum Key Distribution
August 25, 2008, 12:00am PDT
Quantum key distribution is an innovative technique to distribute encryption keys without compromise. This paper focuses on the application of this technique to achieve reliable communication in...
Provided by Crown
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Whitepapers
A Trust-Based Security Architecture for Tactical Manets
September 11, 2008, 12:00am PDT
Security is a main concern in the establishment of tactical MANETs. Literature is abundant in defining protocol extensions to provide more secure MANET communications. Also many techniques have...
Provided by Crown
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Whitepapers
Closed-Form Expressions for the Exact Cramér-Rao Bounds of Timing Recovery Estimators From BPSK and Square-QAM Transmissions
April 26, 2011, 12:00am PDT
In this paper, the authors derive for the first time analytical expressions for the Cramér-Rao Lower Bounds (CRLBs) of timing recovery estimators from Binary Phase Shift Keying (BPSK) and square...
Provided by Crown
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Whitepapers
Data Quality Maximization in Sensor Networks With a Mobile Sink
August 10, 2011, 12:00am PDT
In this paper, the authors consider a wireless sensor network with a mobile sink moving along a fixed trajectory without stop to collect data. They assume that a few powerful and high-capacity...
Provided by Crown
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White Papers
Combined User Multiplexing and Data Modulation Through Non-Binary Turbo Codes for UWB
April 3, 2008, 12:00am PDT
With significant research being conducted in Ultra Wideband communications to increase error performance, this paper proposes a combination of user multiplexing and data encoding to achieve a BER...
Provided by Crown
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White Papers
A Network Management Tool for Resource-Partition Based Layer 1 Virtual Private Networks
September 18, 2008, 12:00am PDT
A Layer 1 Virtual Private Network (L1-VPN) has two models for service management: the resource-partition based model and the domain-service based model. In this paper, the authors present a...
Provided by Crown
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White Papers
Efficiency of Multiparty Networking Protocols Over Mobile Tactical Radios on VHF Bands
October 23, 2010, 12:00am PDT
Multiparty routing protocols for resource constraint VHF Mobile Tactical Networks are studied by employing a modeling platform that integrates VHF tactical radio signal measurement data and...
Provided by Crown
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White Papers
Infrastructure for Multi-Level Secure Service-Oriented Architecture (MLS-SOA)
October 23, 2010, 12:00am PDT
Service-Oriented Architecture (SOA) is the premier application framework for integrating complex heterogeneous computing systems in business and government. To utilize SOA in sensitive military...
Provided by Crown
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White Papers
Supporting Periodic, Strong Re-Authentication in MANET Scenarios
October 23, 2010, 12:00am PDT
A Security Association (SA), established by strong authentication, between a node pair in a Mobile Ad hoc NETwork (MANET) could be lost when its route is disconnected. In contrast, in good channel...
Provided by Crown
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White Papers
Hardware Trojan Horse Device Based on Unintended USB Channels
September 24, 2009, 12:00am PDT
This paper discusses research activities that investigated the risk associated with USB devices. The research focused on identifying, characterizing and modelling unintended USB channels in...
Provided by Crown
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White Papers
AMPHIBIA: A Cognitive Virtualization Platform for End-to-End Slicing
April 26, 2011, 12:00am PDT
To cope with the increasingly diversifying services, QoS, and network architectures, network virtualization is a promising technology that enables the concurrent deployment of multiple network...
Provided by Crown
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White Papers
Asymptotic SER Analysis of EGC and SC in Fading and Non - Gaussian Noise and Interference
June 1, 2007, 12:00am PDT
In this paper, the authors present a unified asymptotic Symbol Error Rate (SER) analysis for linearly modulated signals with Equal Gain Combining (EGC) and Selection Combining (SC) at the...
Provided by Crown
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White Papers
Distributed Source-Coding, Channel-Coding and Modulation for Cooperative Communications
June 1, 2010, 12:00am PDT
In this contribution, the authors propose a novel Distributed Source-coding, Channel-coding and Modulation (DSCM) scheme for cooperative communications. The proposed DSCM scheme is designed for...
Provided by Crown
-
White Papers
Adaptive Turbo Trellis Coded Modulation Aided Distributed Space-Time Trellis Coding for Cooperative Communications
August 1, 2010, 12:00am PDT
In this contribution, the authors propose an adaptive Turbo Trellis Coded Modulation (TTCM) aided Distributed Space-Time Trellis Coding (STTC) scheme for cooperative communication over...
Provided by Crown
-
White Papers
Compressed Sensing Construction of Spectrum Map for Routing in Cognitive Radio Networks
July 1, 2011, 12:00am PDT
Cooperative relay enables general multi-hop Cognitive Radio Networks (CRN) over Cognitive Radios (CR) and nodes of Primary System (PS). However, successful CR networking such as routing relies on...
Provided by Crown
-
White Papers
Information Epidemics in Complex Networks With Opportunistic Links and Dynamic Topology
March 1, 2010, 12:00am PST
Wireless networks, especially Mobile Ad hoc NETworks (MANET) and Cognitive Radio Networks (CRN), are facing two new challenges beyond traditional random network model: opportunistic links with...
Provided by Crown
-
White Papers
Spectrum Aware Opportunistic Routing in Cognitive Radio Networks
March 1, 2010, 12:00am PST
Cognitive Radio (CR) emerges as a key technology to enhance spectrum efficiency and thus creates opportunistic transmissions over links. Supporting the routing function on top of numerous...
Provided by Crown
-
White Papers
Cooperative Amplify-and-Forward With Trellis Coded Modulation
June 1, 2009, 12:00am PDT
In a cooperative communication network, individual users are encouraged not only to transmit their own data, but also relay other user's data. This relaying transmission creates spatial diversity...
Provided by Crown
-
White Papers
Linear Minimum Mean-Squared Error Channel Estimation for Per-Subcarrier Antenna Selection
June 1, 2010, 12:00am PDT
The linear minimum Mean-Squared Error (MSE) channel estimator for systems employing per-subcarrier transmit antenna selection is developed. It is shown that the frequency domain correlations after...
Provided by Crown
-
White Papers
Performance of Multi-Hop Whisper Cognitive Radio Networks
March 1, 2010, 12:00am PST
In 2003, Federal Communications Commission (FCC) has released a new spectrum policy called "Interference temperature model" to improve the channel access opportunities of secondary users. Under...
Provided by Crown
-
White Papers
CultureBee : A Fully Wireless Monitoring and Control System for Protecting Cultural Heritage
June 10, 2011, 12:00am PDT
This paper presents a component based wireless monitoring and control system. The system is introduced from both the system architecture and function point of view. The paper begins with the...
Provided by Crown
-
White Papers
An Emerging Concept for 4G+ Wireless Cellular Networks: Terminal Relaying
September 1, 2011, 12:00am PDT
The technological foundation of Fourth Generation (4G) cellular systems was outlined in the Long Term Evolution Advanced (LTE-A) standards which enable communication rates of 100 Megabits per...
Provided by Crown
-
White Papers
LLSiWSN: A New Range-Free Localization Algorithm for Large Scale Wireless Sensor Networks
September 1, 2011, 12:00am PDT
This paper is proposed a range-free localization algorithm in WSN technology. Effective use some useful information for localization algorithm during sensor node deploy process, to avoid...
Provided by Crown
-
White Papers
Behavior-Based Telecom Tariff Service Design With Neural Network Approach
January 1, 2011, 12:00am PST
This paper presents a behavior-based telecommunication tariff service design model. Unlike traditional service design models, which includes demographic attributes to design telecommunication...
Provided by Crown
-
White Papers
A Lightweight Currency-Based P2P VoD Incentive Mechanism
June 1, 2010, 12:00am PDT
Users in a Peer-To-Peer Video on Demand (P2P VoD) system are allowed to watch any video file at any point in time and to use VCR operations like fast forward, rewind and pause at any time, which...
Provided by Crown
-
White Papers
Performance Analysis and Optimal Signal Designs for Minimum Decoding Complexity ABBA Codes
December 21, 2009, 12:00am PST
ABBA codes, a class of Quasi-orthogonal Space-Time Block Codes (QSTBC), have been proposed to increase the code rate of Orthogonal Space-Time Block Codes (OSTBC). Since ABBA QSTBC have low...
Provided by Crown
-
White Papers
Joint Frame Synchronization and Carrier Frequency Offset Estimation in Multicarrier Systems
December 21, 2009, 12:00am PST
Orthogonal Frequency Division Multiplexing (OFDM) is an effective technique to combat multipath fading,. In OFDM, the insertion of a guard interval between symbol blocks called Cyclic Prefix (CP)...
Provided by Crown
-
White Papers
On Decoding, Mutual Information, and Antenna Selection Diversity for Quasi-Orthogonal STBC With Minimum Decoding Complexity
December 21, 2009, 12:00am PST
ABBA codes are an important class of quasi orthogonal space-time block codes proposed by Tirkkonen et al.. Recently, they have become more attractive for practical applications because Yuen et al....
Provided by Crown
-
White Papers
Local Ordinal Contrast Pattern Histograms for Spatiotemporal, Lip-Based Speaker Authentication
March 1, 2010, 12:00am PST
The lip-region can be interpreted as either a genetic or behavioral biometric trait depending on whether static or dynamic information is used. Despite this breadth of possible application as a...
Provided by Crown
-
White Papers
Fingerprint Recognition Performance in Rugged Outdoors and Cold Weather Conditions
September 14, 2009, 12:00am PDT
This paper reports on tests of the performance of fingerprint recognition technology in rugged outdoor conditions, with an especial concentration on the performance in cold weather. The authors...
Provided by Crown
-
White Papers
Adaptive Client-Impostor Centric Score Normalization: A Case Study in Fingerprint Verification
September 14, 2009, 12:00am PDT
Cohort-based score normalization as exemplified by the T-norm (for Test normalization) has been the state-of the-art approach to account for the variability of signal quality in testing. On the...
Provided by Crown
-
White Papers
The Effect of Time on the Performance of Gait Biometrics
March 1, 2010, 12:00am PST
Many studies have shown that it is possible to recognize people by the way they walk. However, there are a number of covariate factors that affect recognition performance. The time between...
Provided by Crown
-
White Papers
Facial Feature Localization Using Graph Matching With Higher Order Statistical Shape Priors and Global Optimization
March 1, 2010, 12:00am PST
This paper presents a graphical model for deformable face matching and landmark localization under an unknown non-rigid warp. The proposed model learns and combines statistics of both appearance...
Provided by Crown
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