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Nanyang Technological University
(145 results)-
White Papers
Rationality of Critical Parameters Determination in AS-MAC Protocol for Multi-Hop Networks
February 28, 2011, 12:00am PST
The wireless medium access being broadcast in nature and hence being scarce sharing resource highly requires optimized Medium Access Control (MAC) protocols. There has been an increasing interest...
Provided by Nanyang Technological University
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White Papers
Towards Trust-Aware Health Monitoring Body Area Sensor Networks
February 25, 2011, 12:00am PST
In many advanced economies of the world, the rising cost of healthcare has become an urgent problem. Wearable networks formed by lightweight sensors and communication devices - Body Area Sensor...
Provided by Nanyang Technological University
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White Papers
The PHOTON Family of Lightweight Hash Functions
November 10, 2011, 12:00am PST
RFID security is currently one of the major challenges cryptography has to face, often solved by protocols assuming that an on-tag hash function is available. In this paper, the authors present...
Provided by Nanyang Technological University
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White Papers
Fully Secure Spatial Encryption Under Simple Assumptions With Constant-Size Ciphertexts
December 2, 2011, 12:00am PST
In this paper, the authors propose two new Spatial Encryption (SE) schemes based on existing Inner Product Encryption (IPE) schemes. Both of their SE schemes are fully secure under simple...
Provided by Nanyang Technological University
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White Papers
MEGCOM: Min-Energy Group COMmunication in Multi-Hop Wireless Networks
February 19, 2012, 12:00am PST
Given the increasing demand from wireless applications, designing energy-efficient group communication protocols is of great importance to multi-hop wireless networks. A group communication...
Provided by Nanyang Technological University
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White Papers
Joint Network Coding for Interfering Wireless Multicast Networks
December 19, 2011, 12:00am PST
Interference in wireless networks is one of the key-capacity limiting factor. The multicast capacity of an ad-hoc wireless network decreases with an increasing number of transmitting and/or...
Provided by Nanyang Technological University
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White Papers
Cooperative and Distributed Localization for Wireless Sensor Networks in Multipath Environments
September 27, 2011, 12:00am PDT
The authors consider the problem of sensor localization in a wireless network in a multipath environment, where time and angle of arrival information are available at each sensor. They propose a...
Provided by Nanyang Technological University
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White Papers
Connectivity, Coverage and Placement in Wireless Sensor Networks
September 28, 2009, 12:00am PDT
Wireless communication between sensors allows the formation of flexible sensor networks, which can be deployed rapidly over wide or inaccessible areas. However, the need to gather data from all...
Provided by Nanyang Technological University
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White Papers
Sizes of Minimum Connected Dominating Sets of a Class of Wireless Sensor Networks
September 29, 2007, 12:00am PDT
The authors consider an important performance measure of wireless sensor networks, namely, the least number of nodes, N, required to facilitate routing between any pair of nodes, allowing other...
Provided by Nanyang Technological University
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White Papers
Multi-User SISO Precoding Based on Generalized Multi-Unitary Decomposition for Single-Carrier Transmission in Frequency Selective Channel
December 22, 2008, 12:00am PST
MIMO technology has been widely researched in recent years due to its advantages of increasing capacity and diversity gain. With the availability of Channel State Information (CSI) at the...
Provided by Nanyang Technological University
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White Papers
Max-Min Antenna Selection for Bi-Directional Multi-Antenna Relaying
October 9, 2009, 12:00am PDT
In this paper, the authors study the performance of bidirectional (two-way) communication system using two different broadcast schemes with network coding. They propose the use of Max-Min criteria...
Provided by Nanyang Technological University
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White Papers
Group-Decodable Diversity Embedded Space-Time Code
December 30, 2009, 12:00am PST
Diversity embedded space-time code can be used to simultaneously transmit data streams with different diversity levels embedded. However, the decoding complexity of diversity embedded code is high...
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White Papers
Bi-Directional Multi-Antenna Relay Communications With Wireless Network Coding
February 18, 2008, 12:00am PST
In this paper, the authors consider a two-way or bidirectional communications system with a relay equipped with multiple antennas. They show that when the downlink channel state information is not...
Provided by Nanyang Technological University
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White Papers
Understanding the Flooding in Low-Duty-Cycle Wireless Sensor Networks
June 23, 2011, 12:00am PDT
In low-duty-cycle networks, sensors stay dormant most of time to save their energy and wake up based on their needs. Such a technique, while prolonging the network lifetime, sets excessive...
Provided by Nanyang Technological University
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White Papers
Energy Minimization Via Dynamic Voltage Scaling for Real-Time Video Encoding on Mobile Devices
February 10, 2012, 12:00am PST
This paper investigates the problem of minimizing energy consumption for real-time video encoding on mobile devices, by dynamically configuring the clock frequency in the CPU via the Dynamic...
Provided by Nanyang Technological University
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White Papers
Energy Efficiency and Server Virtualization in Data Centers: An Empirical Investigation
January 16, 2012, 12:00am PST
With a growing concern on the considerable energy consumed by data centers, research efforts are targeting toward green data centers with higher energy efficiency. In particular, server...
Provided by Nanyang Technological University
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White Papers
Energy-Optimal Mobile Application Execution: Taming Resource-Poor Mobile Devices With Cloud Clones
January 15, 2012, 12:00am PST
In this paper, the authors propose to leverage cloud computing to tame resource-poor mobile devices. Specifically, mobile applications can be executed in the mobile device (known as mobile...
Provided by Nanyang Technological University
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White Papers
CoDaaS: An Experimental Cloud-Centric Content Delivery Platform for User-Generated Contents
October 11, 2011, 12:00am PDT
User-Generated Content (UGC) is emerging as one of the dominate forms in global media industry. However, the efficient delivery of UGC faces with massive technical challenges due to its long-tail...
Provided by Nanyang Technological University
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White Papers
Complexity-Rate-Distortion Evaluation of Video Encoding for Cloud Media Computing
September 29, 2011, 12:00am PDT
Cloud computing provides a promising solution to cope with the increased complexity in new video compression standards and the increased data volume in video source. It not only saves the cost of...
Provided by Nanyang Technological University
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White Papers
On File Delay Minimization for Content Uploading to Media Cloud Via Collaborative Wireless Network
October 25, 2011, 12:00am PDT
This paper investigates the problem of uploading user-generated content files (e.g., video captured on mobile devices) to a media cloud via a cooperative wireless network. The multi-path...
Provided by Nanyang Technological University
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White Papers
Architecting Green Broadband Cable Access Network: Energy-Delay Trade-Off
October 10, 2010, 12:00am PDT
The authors propose and investigate an energy-saving algorithm for DOCSIS-3.0 cable access networks. Numerical simulations indicate a possible 17.4% energy-saving for 8000 cable modems, but also...
Provided by Nanyang Technological University
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Whitepapers
On the (In)Security of IDEA in Various Hashing Modes
May 9, 2012, 12:00am PDT
In this paper, the authors study the security of the IDEA block cipher when it is used in various simple-length or double-length hashing modes. Even though this cipher is still considered as...
Provided by Nanyang Technological University
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Whitepapers
Fast Visual Saliency Map Extraction From Digital Video
September 8, 2008, 12:00am PDT
A fast algorithm to extract the visual saliency map from digital video is proposed in this paper. Since, digital video is stored and/or transmitted in coded form, the authors utilize the Motion...
Provided by Nanyang Technological University
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Whitepapers
Dynamic Service Selection and Bandwidth Allocation in IEEE 802.16m Mobile Relay Networks
July 6, 2011, 12:00am PDT
Cooperative relay network will be supported in IEEE 802.16m to improve the coverage and performance of mobile broadband wireless access service. In this paper, the authors jointly consider the...
Provided by Nanyang Technological University
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White Papers
DTD-Miner: A Tool for Mining DTD From XML Documents
January 1, 2008, 12:00am PST
XML documents are semistructured and the structure of the documents is embedded in the tags. Although XML documents can be accompanied by a DTD that defines the structure of the documents, the...
Provided by Nanyang Technological University
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White Papers
ECG Biometric System
April 25, 2008, 12:00am PDT
Researchers have investigated the possibilities of using ECG as a new biometric to perform individual identification. The authors propose the use of conventional 12-lead ECG analysis systems to...
Provided by Nanyang Technological University
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White Papers
Real-Time Facial Emotion Recognition System Using Fuzzy Neural Networks
May 16, 2008, 12:00am PDT
This paper presents a real-time computer-based system to recognize human facial emotion using fuzzy neural network approach. The system first locates the human face in an image, and then...
Provided by Nanyang Technological University
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White Papers
Speaker Independent Emotion Recognition System - SIERS
April 25, 2008, 12:00am PDT
Most speech emotion recognition system proposed to date uses the Hidden Markov Model (HMM). Such system is compute intensive and would require longer training and testing time that may not be...
Provided by Nanyang Technological University
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White Papers
Asymmetric Information And Conglomerate Discount: Evidence From Spinoffs
June 19, 2007, 12:00am PDT
The existing literature argues that diversified firms may be undervalued due to information asymmetry between a firm's management and the market. Splitting the firm's divisions into multiple...
Provided by Nanyang Technological University
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White Papers
Making Palm Print Matching Mobile
November 29, 2009, 12:00am PST
With the growing importance of personal identification and authentication in today's highly advanced world where most business and personal tasks are being replaced by electronic means, the need...
Provided by Nanyang Technological University
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White Papers
Differential Privacy Via Wavelet Transforms
September 30, 2009, 12:00am PDT
Numerous organizations, like census bureaus and hospitals, maintain large collections of personal information (e.g., census data and medical records). Such data collections are of significant...
Provided by Nanyang Technological University
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White Papers
A 60 Ghz Analog Phase Shifter in 65 Nm Bulk CMOS Process
July 1, 2010, 12:00am PDT
A 60 GHz Analog Phase Shifter in 65nm bulk CMOS process has been explored for microwave frequency applications. It is an analog phase shifter with three transistors in the form of an active...
Provided by Nanyang Technological University
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White Papers
A Light-Weight Mutual Authentication and Key-Exchange Protocol Based on Elliptical Curve Cryptogaphy for Energy-Constrained Devices
April 1, 2010, 12:00am PDT
Wireless devices are characterized by low computational power and memory. Hence security protocols dealing with these devices have to be designed to give minimal computational and memory load. The...
Provided by Nanyang Technological University
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White Papers
Self-Repairing Homomorphic Codes for Distributed Storage Systems
July 31, 2010, 12:00am PDT
Erasure codes provide a storage efficient alternative to replication based redundancy in (networked) storage systems. They however entail high communication overhead for maintenance, when some of...
Provided by Nanyang Technological University
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White Papers
Infinite Families of Optimal Splitting Authentication Codes Secure Against Spoofing Attacks of Higher Order
October 2, 2010, 12:00am PDT
In the standard model of authentication theory, a transmitter wants to send some information to a receiver across an insecure channel while an opponent with access to the channel wants to deceive...
Provided by Nanyang Technological University
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White Papers
SNAP: SNowbAll Multi-Tree Pushing for Peer-to-Peer Media Streaming
September 13, 2010, 12:00am PDT
Given the respective advantages of the two complimentary techniques for peer-to-peer media streaming (namely tree-based push and mesh-based pull), there is a strong trend of combining them into a...
Provided by Nanyang Technological University
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White Papers
Secure Index Coding With Side Information
November 25, 2010, 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 Nanyang Technological University
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White Papers
Homophonic Coding Design for Communication Systems Employing the Encoding-Encryption Paradigm
December 30, 2010, 12:00am PST
This paper addresses the design of a dedicated homophonic coding for a class of communication systems which, in order to provide both reliability and security, first encode the data before...
Provided by Nanyang Technological University
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White Papers
Easy Impossibility Proofs for K-Set Agreement in Message Passing Systems
March 21, 2011, 12:00am PDT
Despite of being quite similar agreement problems, consensus and general k-set agreement require surprisingly different techniques for proving the impossibility in asynchronous systems with crash...
Provided by Nanyang Technological University
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White Papers
Forecasting Business Cycles In A Small Open Economy: A Dynamic Factor Model For Singapore
April 18, 2008, 12:00am PDT
The authors apply multivariate statistical methods to a large dataset of Singapore's macroeconomic variables and global economic indicators with the objective of forecasting business cycles in a...
Provided by Nanyang Technological University
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White Papers
Deriving Value in Digital Media Networks
May 21, 2009, 12:00am PDT
This paper presents a framework for the analyzing revenue distribution in the delivery of digital content such as music, movies, games, books, and news. In such content delivery networks, there...
Provided by Nanyang Technological University
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White Papers
Foreign Institutional Investors And Security Returns: Evidence From Indian Stock Exchanges
June 18, 2008, 12:00am PDT
One of the outstanding features of globalization in the financial services industry is the increased access provided to non-local investors in several major stock markets of the world....
Provided by Nanyang Technological University
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White Papers
IPV6 Network Mobility on Ad Hoc Network for Transportation Systems
January 1, 2010, 12:00am PST
The authors introduce the network architecture which consists of fleets of mobile routers interconnected using the at ad hoc routing protocol and access router discovery protocol. This network...
Provided by Nanyang Technological University
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White Papers
Comparison of Overlay and Peer Models in IP over Optical Networks
December 9, 2008, 12:00am PST
This paper study's the performance of connection establishment of Label Switched Paths (LSPs) under two different interconnection models in IP over optical networks. Authors show that the add/drop...
Provided by Nanyang Technological University
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White Papers
Multi-paths Routing with Load Balancing for Internet Access in Wireless Mesh Networks
February 1, 2010, 12:00am PST
Wireless Mesh Networks (WMN) has different characteristics compared with the mobile ad hoc networks (MANET). The issue of Internet access with wireless mesh connectivity is a very important issue...
Provided by Nanyang Technological University
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White Papers
Business Process Management (BPM) Standards: A Survey
August 26, 2009, 12:00am PDT
Through the combination of SOA (Service Oriented Architecture) with an intelligent Business Process Management that guaranties the immediate execution of the defined processes in multiple...
Provided by Nanyang Technological University
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White Papers
Building Latent Growth Models Using PROC CALIS: A Structural Equation Modeling Approach
March 19, 2010, 12:00am PDT
This paper illustrates the structural equation modeling approach of building Latent Growth Models (LGMs) using PROC CALIS. In the past decade, LGM has become one of the commonly used statistical...
Provided by Nanyang Technological University
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White Papers
Probe Station Selection for Robust Network Monitoring
October 31, 2009, 12:00am PDT
Probing is a promising approach for network monitoring. An important problem that needs to be addressed while developing probing-based solutions is the selection of probe station nodes. Probe...
Provided by Nanyang Technological University
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White Papers
3D Visualization and Segmentation of Brain MRI Data
January 16, 2009, 12:00am PST
Automatic segmentation of brain MRI data usually leaves some segmentation errors behind that are to be subsequently removed interactively using computer graphics tools. This interactive removal is...
Provided by Nanyang Technological University
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White Papers
DTD-Miner: A Tool for Mining DTD From XML Documents
January 1, 2008, 12:00am PST
XML documents are semistructured and the structure of the documents is embedded in the tags. Although XML documents can be accompanied by a DTD that defines the structure of the documents, the...
Provided by Nanyang Technological University
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