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Aalto University
(63 results)-
White Papers
Information Retrieval Perspective to Nonlinear Dimensionality Reduction for Data Visualization
December 1, 2009, 12:00am PST
Nonlinear dimensionality reduction methods are often used to visualize high-dimensional data, although the existing methods have been designed for other related tasks such as manifold learning. It...
Provided by Aalto University School of Science and Technology
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Whitepapers
Per-Node Throughput Performance of Overlapping Cognitive Radio Networks
August 28, 2012, 12:00am PDT
Multiple Cognitive Radio (CR) networks may exist in the same spatial domain in many cases. In this paper, the authors consider two uncoordinated and geographically overlapping CR networks...
Provided by Aalto University
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White Papers
Financial Aspects Of Cloud Computing Business Models
September 6, 2010, 12:00am PDT
The purpose of this paper was to explore financial aspects of cloud computing business models from Information Technology (IT) services provider's perspective. The financial aspects were divided...
Provided by Aalto University School of Economics
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White Papers
The PASSERINE Public Key Encryption and Authentication Mechanism
October 10, 2010, 12:00am PDT
PASSERINE is a lightweight public key encryption mechanism which is based on a hybrid, randomized variant of the Rabin public key encryption scheme. Its design is targeted for extremely...
Provided by Aalto University
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White Papers
In-depth Breakdown of a 6LOWPAN Stack for Sensor Networks
November 1, 2010, 12:00am PDT
There exist several open source 6LoWPAN stacks for researchers to experiment with. However, they often lack sufficient and in-depth description of the internal operation, which makes extending the...
Provided by Aalto University
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White Papers
Network Mobilizers And Target Firms: Analyzing Mobilization Around The Issue Of Clean Baltic Sea
August 27, 2010, 12:00am PDT
This paper focuses on mobilization of networks. The empirical study provides a rich case analysis of four initiatives to protect the Baltic Sea. They propose a model on mobilization setting and...
Provided by Aalto University School of Economics
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White Papers
Semantic Interoperability in Electronic Business
September 1, 2010, 12:00am PDT
E-business refers to the utilization of Information and Communication Technologies (ICT) in support of all the activities of business. The standards developed for e-business help to facilitate the...
Provided by Aalto University
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White Papers
Competitive Actions And Dynamics In Project Marketing: Identifying Causal Mechanisms
March 31, 2010, 12:00am PDT
In project marketing research, there is limited understanding of the mechanisms of how central project marketing actions lead to success and good business performance of the project-based firm....
Provided by Aalto University
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White Papers
Project-Ending Competence In Networks: Two Cases Of Large Inter-Organizational Projects
August 27, 2010, 12:00am PDT
Continuing restructure of business driven by global economic change and new technology often requires closure of existing manufacturing facilities. In cases where these terminations are unexpected...
Provided by Aalto University
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White Papers
Digital Bonds In Business Relationships
August 27, 2010, 12:00am PDT
Business relationships and networks have been studied intensively in business marketing literature, however still little is known about the influence of Information Technology (IT) on business...
Provided by Aalto University School of Economics
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White Papers
Security Challenges in Hybrid Cloud Infrastructures
November 23, 2010, 12:00am PST
Cloud computing has the potential to significantly change the way enterprises and their IT (Information Technology) systems run, but in order to achieve this current cloud computing model needs to...
Provided by Aalto University
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White Papers
Security Concerns in Commercial Cloud Computing
November 23, 2010, 12:00am PST
Companies benefit from cloud computing services in terms of cost reduction and processes enhancement: enterprises are able to scale their systems easily and deploy new technologies more...
Provided by Aalto University School of Science and Technology
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White Papers
Secure and Anonymous Communication in the Cloud
November 22, 2010, 12:00am PST
Many communication systems provide confidentiality, integrity and availability to communicating parties, yet few can also provide anonymous communication in a way that allows communicating parties...
Provided by Aalto University School of Science and Technology
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White Papers
Monitoring Intrusions and Security Breaches in Highly Distributed Cloud Environments
November 23, 2010, 12:00am PST
Cloud computing is a new computing model. According to International Data Corporation (IDC) report, security is ranked first among challenges of the cloud model. In a perfect security solution,...
Provided by Aalto University
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White Papers
Reputation in Cloud Computing
November 23, 2010, 12:00am PST
Nowadays the concept of cloud computing is getting popular around the Net. The capacity and scalability that cloud computing offers is making it an alternative to consider when a good...
Provided by Aalto University
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Whitepapers
On the Exact Distribution of the Scaled Largest Eigenvalue
May 24, 2012, 12:00am PDT
In this paper, the authors study the distribution of the scaled largest eigenvalue of complex Wishart matrices, which has diverse applications both in statistics and wireless communications. Exact...
Provided by Aalto University
-
Whitepapers
On Finding Multicast Paths in the Internet
May 24, 2012, 12:00am PDT
This paper evaluates the so-called Multicasting Via Paths (MVP) protocol. Both an ILP-based (exact) algorithm and a greedy heuristic algorithm for finding MVP paths are presented. By numerical...
Provided by Aalto University
-
Whitepapers
Towards Robust, Scalable, and Fast Internet Via Explicit Forwarding Engines (EFE)
May 24, 2012, 12:00am PDT
This paper argues that the scalability problems of the Internet could be solved, not only in the control plane, but also in the forwarding plane. To this end, an explicit forwarding scheme is...
Provided by Aalto University
-
Whitepapers
Scaling Bloom Filter Based Multicast With Hierarchical Tree Splitting
May 24, 2012, 12:00am PDT
Bloom Filter based multicast has been proposed as a source-specific multicast solution to eliminate the multicast state requirements in the routers. However, the inherent limitation, the false...
Provided by Aalto University
-
Whitepapers
Exploiting Traffic Scheduling Mechanisms to Reduce Transmission Cost on Mobile Devices
March 12, 2012, 12:00am PDT
Energy consumption of wireless data transmission heavily depends on the shape of the outgoing traffic of the mobile device. In this paper, the authors propose a traffic scheduler that shapes the...
Provided by Aalto University
-
Whitepapers
Device-to-Device Underlay Cellular Network Based on Rate Splitting
March 12, 2012, 12:00am PDT
The authors consider rate splitting and interference cancelation in Device-To-Device (D2D) communications underlaying a cellular network. They assume that a transmitted message is split into a...
Provided by Aalto University
-
Whitepapers
Performance of Target Tracking Applications in Multi-Channel Wireless Sensor Networks
March 12, 2012, 12:00am PDT
Several future wireless communication systems will exploit multiple frequency channels simultaneously to reduce delay, enhance throughput and/or improve robustness. Nevertheless, the impact of...
Provided by Aalto University
-
Whitepapers
Design of Spectrum Sensing Policy for Multi-User Multi-Band Cognitive Radio Network
September 8, 2012, 12:00am PDT
Finding an optimal sensing policy for a particular access policy and sensing scheme is a laborious combinatorial problem that requires the system model parameters to be known. In practice the...
Provided by Aalto University
-
Whitepapers
New Algorithms for Position Heaps
December 19, 2012, 12:00am PST
Position heaps are data structures for indexed pattern matching in a string, recently introduced as an alternative to suffix trees and suffix arrays. In this paper, the authors show how to modify...
Provided by Aalto University
-
Whitepapers
Zero-Correlation Linear Cryptanalysis of Reduced-Round LBlock
December 23, 2012, 12:00am PST
Zero-correlation linear attack is a new method for cryptanalysis of block ciphers developed by Bogdanov et al. in 2012. In this paper, the authors adapt the matrix method to find zero-correlation...
Provided by Aalto University
-
Whitepapers
The Linux Pseudorandom Number Generator Revisited
May 24, 2012, 12:00am PDT
The Linux PseudoRandom Number Generator (PRNG) is a PRNG with entropy inputs which is widely used in many security related applications and protocols. This PRNG is written as an open source code...
Provided by Aalto University
-
Whitepapers
Follow @grandma: Long-Term Device-Free Localization for Residential Monitoring
August 16, 2012, 12:00am PDT
Device-Free Localization (DFL) enables localizing people by monitoring the changes in the Radio Frequency (RF) attenuation field of an area where a wireless network is deployed. Notably, this...
Provided by Aalto University
-
Whitepapers
Enhancing the Accuracy of Radio Tomographic Imaging Using Channel Diversity
August 7, 2012, 12:00am PDT
Radio Tomographic Imaging (RTI) is an emerging Device-Free Localization (DFL) technology enabling the localization of people and other objects without requiring them to carry any electronic...
Provided by Aalto University
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Whitepapers
Characterizing Content Sharing Properties for Mobile Users in Open City Squares
February 11, 2013, 12:00am PST
For mobile delay-tolerant networks, different mobility models have been utilized to assess the performance of routing algorithms and applications. Substantial work has gone into understanding the...
Provided by Aalto University
-
Whitepapers
Authenticated Resource Management in Delay-Tolerant Networks Using Proxy Signatures
February 11, 2013, 12:00am PST
In Delay-Tolerant Networks (DTN), individual nodes with much higher rates of sending new bundles than average can degrade the delivery rate of other nodes substantially. They have a much higher...
Provided by Aalto University
-
Whitepapers
Marooned Magic Numbers - An Adaptive Congestion Control Architecture
September 24, 2012, 12:00am PDT
TCP and other Internet transport protocols rely on series of hard-coded initial values for their connection state, particularly for the congestion control parameters. For example, recently the...
Provided by Aalto University
-
Whitepapers
Floating Information With Stationary Nodes
April 11, 2012, 12:00am PDT
In the floating content application, mobile nodes collectively store and disseminate messages relevant to a certain area by using the principles of opportunistic networking. The system operates in...
Provided by Aalto University
-
Whitepapers
Mobility and Service Discovery in Opportunistic Networks
January 24, 2012, 12:00am PST
Past research on opportunistic communications has demonstrated the power of mobile phones as information mediators and content providers to co-located devices. As an extension of opportunistic...
Provided by Aalto University
-
Whitepapers
ConTug: A Receiver-Driven Transport Protocol for Content-Centric Networks
July 30, 2010, 12:00am PDT
This paper presents ConTug, a new, receiver-driven transport protocol for content-centric networks. It discusses the specific constraints of content-centric networks and describes the design of...
Provided by Aalto University
-
Whitepapers
Tag-Based Improved Search in Peer-to-Peer Overlays
July 1, 2012, 12:00am PDT
P2P based file sharing applications have gained immense popularity in recent years. Most content sharing applications search by matching the query with the file name. Some content sharing...
Provided by Aalto University
-
Whitepapers
Improving the Efficiency of Deploying Virtual Machines in a Cloud Environment
September 13, 2012, 12:00am PDT
Flexible allocation of resources is one of the main benefits of cloud computing. Virtualization is used to achieve this flexibility: one or more virtual machines run on a single physical machine....
Provided by Aalto University
-
Whitepapers
P2P Media Streaming With HTML5 and WebRTC
February 4, 2013, 12:00am PST
Video-on-Demand (VoD) services, such as YouTube, generate most of the Internet traffic today, and the popularity of video services is growing. Service and CDN providers have to invest more and...
Provided by Aalto University
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Whitepapers
Energy Cost of Advertisements in Mobile Games on the Android Platform
September 12, 2012, 12:00am PDT
Advertisements (ads) are a common source of revenue for monetizing free mobile applications, but increase the energy consumption of a mobile device because the advertisement have to be fetched and...
Provided by Aalto University
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Whitepapers
Mobile Computation Offloading - Factors Affecting Technology Evolution
June 23, 2012, 12:00am PDT
Compared to desktop devices, mobile devices have inherent constraints such as limited processing power, memory, and battery capacity. With the proliferation of resource-hungry applications,...
Provided by Aalto University
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Whitepapers
Different Faces of Information Centric Networking
December 1, 2011, 12:00am PST
In this paper, the feasibility of current internet framework for future usage is investigated. Internet has been a huge success. However, the scale of its use has given rise to issues and...
Provided by Aalto University
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Whitepapers
Different Faces of Information Centric Networking
December 1, 2011, 12:00am PST
In this paper, the feasibility of current internet framework for future usage is investigated. Internet has been a huge success. However, the scale of its use has given rise to issues and...
Provided by Aalto University
-
Whitepapers
Mobile Computation Offloading - Factors Affecting Technology Evolution
June 23, 2012, 12:00am PDT
Compared to desktop devices, mobile devices have inherent constraints such as limited processing power, memory, and battery capacity. With the proliferation of resource-hungry applications,...
Provided by Aalto University
-
Whitepapers
Energy Cost of Advertisements in Mobile Games on the Android Platform
September 12, 2012, 12:00am PDT
Advertisements (ads) are a common source of revenue for monetizing free mobile applications, but increase the energy consumption of a mobile device because the advertisement have to be fetched and...
Provided by Aalto University
-
Whitepapers
P2P Media Streaming With HTML5 and WebRTC
February 4, 2013, 12:00am PST
Video-on-Demand (VoD) services, such as YouTube, generate most of the Internet traffic today, and the popularity of video services is growing. Service and CDN providers have to invest more and...
Provided by Aalto University
-
Whitepapers
Improving the Efficiency of Deploying Virtual Machines in a Cloud Environment
September 13, 2012, 12:00am PDT
Flexible allocation of resources is one of the main benefits of cloud computing. Virtualization is used to achieve this flexibility: one or more virtual machines run on a single physical machine....
Provided by Aalto University
-
Whitepapers
Tag-Based Improved Search in Peer-to-Peer Overlays
July 1, 2012, 12:00am PDT
P2P based file sharing applications have gained immense popularity in recent years. Most content sharing applications search by matching the query with the file name. Some content sharing...
Provided by Aalto University
-
Whitepapers
ConTug: A Receiver-Driven Transport Protocol for Content-Centric Networks
July 30, 2010, 12:00am PDT
This paper presents ConTug, a new, receiver-driven transport protocol for content-centric networks. It discusses the specific constraints of content-centric networks and describes the design of...
Provided by Aalto University
-
Whitepapers
Mobility and Service Discovery in Opportunistic Networks
January 24, 2012, 12:00am PST
Past research on opportunistic communications has demonstrated the power of mobile phones as information mediators and content providers to co-located devices. As an extension of opportunistic...
Provided by Aalto University
-
Whitepapers
Floating Information With Stationary Nodes
April 11, 2012, 12:00am PDT
In the floating content application, mobile nodes collectively store and disseminate messages relevant to a certain area by using the principles of opportunistic networking. The system operates in...
Provided by Aalto University
-
Whitepapers
Marooned Magic Numbers - An Adaptive Congestion Control Architecture
September 24, 2012, 12:00am PDT
TCP and other Internet transport protocols rely on series of hard-coded initial values for their connection state, particularly for the congestion control parameters. For example, recently the...
Provided by Aalto University
-
Whitepapers
Authenticated Resource Management in Delay-Tolerant Networks Using Proxy Signatures
February 11, 2013, 12:00am PST
In Delay-Tolerant Networks (DTN), individual nodes with much higher rates of sending new bundles than average can degrade the delivery rate of other nodes substantially. They have a much higher...
Provided by Aalto University
-
Whitepapers
Characterizing Content Sharing Properties for Mobile Users in Open City Squares
February 11, 2013, 12:00am PST
For mobile delay-tolerant networks, different mobility models have been utilized to assess the performance of routing algorithms and applications. Substantial work has gone into understanding the...
Provided by Aalto University
-
Whitepapers
Enhancing the Accuracy of Radio Tomographic Imaging Using Channel Diversity
August 7, 2012, 12:00am PDT
Radio Tomographic Imaging (RTI) is an emerging Device-Free Localization (DFL) technology enabling the localization of people and other objects without requiring them to carry any electronic...
Provided by Aalto University
-
Whitepapers
Follow @grandma: Long-Term Device-Free Localization for Residential Monitoring
August 16, 2012, 12:00am PDT
Device-Free Localization (DFL) enables localizing people by monitoring the changes in the Radio Frequency (RF) attenuation field of an area where a wireless network is deployed. Notably, this...
Provided by Aalto University
-
Whitepapers
The Linux Pseudorandom Number Generator Revisited
May 24, 2012, 12:00am PDT
The Linux PseudoRandom Number Generator (PRNG) is a PRNG with entropy inputs which is widely used in many security related applications and protocols. This PRNG is written as an open source code...
Provided by Aalto University
-
Whitepapers
Zero-Correlation Linear Cryptanalysis of Reduced-Round LBlock
December 23, 2012, 12:00am PST
Zero-correlation linear attack is a new method for cryptanalysis of block ciphers developed by Bogdanov et al. in 2012. In this paper, the authors adapt the matrix method to find zero-correlation...
Provided by Aalto University
-
Whitepapers
New Algorithms for Position Heaps
December 19, 2012, 12:00am PST
Position heaps are data structures for indexed pattern matching in a string, recently introduced as an alternative to suffix trees and suffix arrays. In this paper, the authors show how to modify...
Provided by Aalto University
-
Whitepapers
Design of Spectrum Sensing Policy for Multi-User Multi-Band Cognitive Radio Network
September 8, 2012, 12:00am PDT
Finding an optimal sensing policy for a particular access policy and sensing scheme is a laborious combinatorial problem that requires the system model parameters to be known. In practice the...
Provided by Aalto University
-
Whitepapers
Performance of Target Tracking Applications in Multi-Channel Wireless Sensor Networks
March 12, 2012, 12:00am PDT
Several future wireless communication systems will exploit multiple frequency channels simultaneously to reduce delay, enhance throughput and/or improve robustness. Nevertheless, the impact of...
Provided by Aalto University
-
Whitepapers
Device-to-Device Underlay Cellular Network Based on Rate Splitting
March 12, 2012, 12:00am PDT
The authors consider rate splitting and interference cancelation in Device-To-Device (D2D) communications underlaying a cellular network. They assume that a transmitted message is split into a...
Provided by Aalto University
-
Whitepapers
Exploiting Traffic Scheduling Mechanisms to Reduce Transmission Cost on Mobile Devices
March 12, 2012, 12:00am PDT
Energy consumption of wireless data transmission heavily depends on the shape of the outgoing traffic of the mobile device. In this paper, the authors propose a traffic scheduler that shapes the...
Provided by Aalto University
-
Whitepapers
Scaling Bloom Filter Based Multicast With Hierarchical Tree Splitting
May 24, 2012, 12:00am PDT
Bloom Filter based multicast has been proposed as a source-specific multicast solution to eliminate the multicast state requirements in the routers. However, the inherent limitation, the false...
Provided by Aalto University
-
Whitepapers
Towards Robust, Scalable, and Fast Internet Via Explicit Forwarding Engines (EFE)
May 24, 2012, 12:00am PDT
This paper argues that the scalability problems of the Internet could be solved, not only in the control plane, but also in the forwarding plane. To this end, an explicit forwarding scheme is...
Provided by Aalto University
-
Whitepapers
On Finding Multicast Paths in the Internet
May 24, 2012, 12:00am PDT
This paper evaluates the so-called Multicasting Via Paths (MVP) protocol. Both an ILP-based (exact) algorithm and a greedy heuristic algorithm for finding MVP paths are presented. By numerical...
Provided by Aalto University
-
Whitepapers
On the Exact Distribution of the Scaled Largest Eigenvalue
May 24, 2012, 12:00am PDT
In this paper, the authors study the distribution of the scaled largest eigenvalue of complex Wishart matrices, which has diverse applications both in statistics and wireless communications. Exact...
Provided by Aalto University
-
Whitepapers
Per-Node Throughput Performance of Overlapping Cognitive Radio Networks
August 28, 2012, 12:00am PDT
Multiple Cognitive Radio (CR) networks may exist in the same spatial domain in many cases. In this paper, the authors consider two uncoordinated and geographically overlapping CR networks...
Provided by Aalto University
-
Whitepapers
Criticality of Large Delay Tolerant Networks Via Directed Continuum Percolation in Space-Time
August 2, 2012, 12:00am PDT
Delay-Tolerant Networking (DTN) is a last-resort networking paradigm for mobile nodes when direct and multi-hop connections are infeasible, i.e., the network is not connected and nodes have to...
Provided by Aalto University
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Whitepapers
Continuum Percolation Threshold for Permeable Aligned Cylinders and Opportunistic Networking
May 2, 2012, 12:00am PDT
In the continuum percolation problem, objects of given shape are placed according to a k-dimensional Poisson process. Two objects are neighbors if they overlap. The percolation is said to occur if...
Provided by Aalto University
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Whitepapers
Minimizing Slowdown in Heterogeneous Size-Aware Dispatching Systems
March 22, 2012, 12:00am PDT
The authors consider a system of parallel queues where tasks are assigned (dispatched) to one of the available servers upon arrival. The dispatching decision is based on the full state...
Provided by Aalto University
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Whitepapers
Exploiting Hardware Heterogeneity Within the Same Instance Type of Amazon EC2
May 4, 2012, 12:00am PDT
Cloud computing providers might start with near homogeneous hardware environment. Over time, the homogeneous environment will most likely evolve into heterogeneous one because of possible upgrades...
Provided by Aalto University
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White Papers
Floating Content: Information Sharing in Urban Areas
February 14, 2011, 12:00am PST
Content sharing using personal web pages, blogs, or online social networks is a common means for people to maintain contact with their friends, colleagues, and acquaintances. While such means are...
Provided by Aalto University
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White Papers
Message Fragmentation for Disrupted Links
February 13, 2011, 12:00am PST
In networks with unstable links the connection between the sender and the receiver may be cut before the entire message has been transmitted. Quantization of the message into blocks before its...
Provided by Aalto University
-
White Papers
Voice Messaging for Mobile Delay-Tolerant Networks
December 10, 2010, 12:00am PST
Mobile ad-hoc networks, especially when they are sparse, are not well suited for ad-hoc voice communication when using end-to-end real-time audio streams: as paths grow in length, stability and...
Provided by Aalto University
-
White Papers
Using Buffer Space Advertisements to Avoid Congestion in Mobile Opportunistic DTNs
March 31, 2011, 12:00am PDT
This paper investigates congestion control in opportunistic networks that use Delay-Tolerant Networking (DTN) as a basis for communication. The authors propose a mechanism that advertises buffer...
Provided by Aalto University
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White Papers
Mobile Networks Unplugged
February 25, 2010, 12:00am PST
Mobile network access has seemingly become ubiquitous in industrialized countries. With data services becoming sufficiently fast, usable, and affordable, demand are growing rapidly, both in the...
Provided by Aalto University
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White Papers
Towards More Adaptive Voice Applications
February 15, 2010, 12:00am PST
With the Internet designed to provide best-effort packet transmission, applications are expected to adapt dynamically to the operating conditions observed in the network. For this purpose,...
Provided by Aalto University
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White Papers
Opportunistic Web Access Via WLAN Hotspots
February 9, 2010, 12:00am PST
Mobile phones are becoming commonplace for consuming Internet content and services. However, availability, affordability, and quality of the supposedly ubiquitous cellular network infrastructure...
Provided by Aalto University
-
White Papers
Virtual RTCP: A Case Study of Monitoring and Repair for UDP-Based IPTV Systems
March 21, 2012, 12:00am PDT
IPTV systems have seen widespread deployment, but often lack robust mechanisms for monitoring the quality of experience. This makes it difficult for network operators to ensure that their services...
Provided by Aalto University
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White Papers
Practical Realisation and Elimination of an ECC-Related Software Bug Attack
March 6, 2012, 12:00am PST
The authors analyze and exploit implementation features in OpenSSL version 0:9:8g which permit an attack against ECDH-based functionality. The attack, although more general, can recover the entire...
Provided by Aalto University
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White Papers
Towards Mobile Device Cloud
December 22, 2011, 12:00am PST
Although cloud computing has established itself as a novel paradigm, mobile devices have unique characteristics and capabilities that are not inherently made part of a cloud. This paper presents...
Provided by Aalto University
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